Bathroom Layout Planner: Dimensions, Clearances, ADA Rules and Layouts by Size

A standard full bathroom is about 5 × 8 ft (1.5 × 2.4 m). The International Plumbing Code (IPC 405.3.1) keeps a toilet's centerline at least 15 in (381 mm) from a side wall and leaves 21 in (533 mm) clear in front of it, and an ADA bathroom also needs a 60-in (1525 mm) wheelchair turning space. This guide gives the standard sizes, the common layouts, what fits each room size and the clearance tables, then a step-by-step way to plan the layout and draw it for free.

It is written for architects and interior designers who need figures they can cite, and for homeowners planning a remodel. Every figure is given in inches and in metric units with the code section it comes from, as of October 2026; codes are adopted and amended locally, so check the edition that applies to your project.

Key Takeaways

• A full bath is typically about 5 × 8 ft (1.5 × 2.4 m), a half bath about 3 × 6 ft (0.9 × 1.8 m) and a primary bath 8 × 10 ft (2.4 × 3.0 m) or more. These are typical sizes, not code minimums.

• The plumbing code sets the space around each fixture: at least 15 in (381 mm) from a toilet's or sink's centerline to a side wall, 30 in (762 mm) between two centerlines and 21 in (533 mm) clear in front (IPC 405.3.1).

• ADA figures are larger, with a 60-in (1525 mm) turning space and a 60 × 56 in (1525 × 1420 mm) clear space at the toilet, and they apply to public and commercial buildings, not to private homes.

• Start from the drains, the vent stack and the structure, then place the toilet, the shower or tub and the vanity, in that order.

• None of the planners in this guide checks a layout against the code: draw the room with its real wall lengths, add dimension lines and check each clearance yourself.

Standard Bathroom Sizes and Dimensions

Bathroom sizes follow from the fixtures in the room. The sizes below are typical of US homes, not code minimums: the code sets the space around each fixture, covered in the clearance section below, and the room size follows from it.

To turn room dimensions into floor area, use our square meter calculator. For clearances and minimum room sizes beyond the bathroom, see our guide to space planning.

Common Bathroom Layouts

Most bathrooms follow one of a few layouts. Which one fits depends on the shape of the room, where the plumbing can run and how many people use the room at once. The architecture firm Board & Vellum's rules of thumb for bathroom floor plans are a good companion to this list.

Three-in-a-Row (One Wet Wall)

The tub or shower runs across the far end, the toilet sits in the middle and the vanity is nearest the door, all on one long wall. It is the classic 5 × 8 ft (1.5 × 2.4 m) full bath and the cheapest to plumb, because every drain and supply line is in one wall; its limits are a short counter and room for one person at a time. With a standard tub of 2 ft 6 in × 5 ft (about 0.76 × 1.52 m), the size Board & Vellum gives, and 15 in on each side of the toilet's and the sink's centerlines, the row takes 90 in (2.29 m), which a 5 × 8 ft room provides with 6 in to spare.

Fixtures on Two Walls

The fixtures are split between two facing walls, for example the toilet and the tub on one side and a long vanity on the other. The room gains counter space and room to move, and two people can use it at once, but two wet walls cost more to plumb, and the room has to be wide enough to keep 21 in (533 mm) clear in front of each fixture.

L-Shaped Bathroom Layout

An L-shaped bathroom wraps around a closet, a shaft or a column. The shape separates the room on its own: the shower or tub in one leg, the vanity and toilet in the other. Put the exhaust fan in the wet leg, where the steam is.

Corner Shower in a Small Square Room

In a square room of about 6 × 6 ft (1.8 × 1.8 m), a shower in one corner leaves the two walls beside it for the toilet and the sink and makes a three-quarter bath. A glass screen instead of a curtain keeps the small room looking open.

Jack and Jill Bathroom

A Jack and Jill bathroom sits between two bedrooms and has a door from each. It usually works in zones: a vanity area, often with two sinks, and a separate room with the toilet and the tub or shower, so that two people can use it at the same time. Draw both door swings early, because two doors leave less free wall for fixtures.

Master Bathroom Layout

A master or primary bathroom usually has a double vanity, a separate shower, often a tub and a toilet in its own compartment, in a room of 8 × 10 ft (2.4 × 3.0 m) or more. Under IPC 405.3.1 the two sinks need their centerlines at least 30 in (762 mm) apart, and a toilet compartment must be at least 30 × 60 in (762 × 1524 mm), or 30 × 56 in (762 × 1422 mm) with a wall-hung toilet. Board & Vellum fits a compact five-piece primary bath (two sinks, a toilet room, a shower and a tub) into 8 × 12 ft (2.4 × 3.7 m). Plan separate wet, dry and grooming zones, and stack the plumbing over a kitchen or bathroom below where you can.

Wet Room and Curbless Shower

A wet room has no shower enclosure: the whole floor is waterproofed and falls to a drain. A curbless shower keeps the fall within the shower area and leaves a flat entry, which suits accessible and aging-in-place bathrooms. Both need a floor graded to the drain and a continuous waterproofing membrane; follow the membrane maker's details and your code, and plan the floor recess early with the plumber and the structural engineer.

Bathroom Layouts by Room Size: 5x5 to 10x10

The table shows what usually fits each common size, worked out from the plumbing-code clearances (15 in to each side of a fixture's centerline, 30 in between centerlines and 21 in clear in front). Treat it as a rule of thumb: fixtures vary in size, so draw your own room before you order anything.

Small Bathroom Layout Ideas

Bathrooms under about 40 sq ft (3.7 m²) gain the most from a few moves:

• Keep every fixture on one wet wall, as in the 5 × 8 ft three-in-a-row.

• Use a pocket door or a door that swings out, so its swing does not take the space in front of the fixtures.

• In a toilet compartment, a wall-hung toilet lowers the IPC minimum depth from 60 in to 56 in (1524 to 1422 mm).

• Use a shower with a glass screen instead of a tub with a curtain to make the room look larger.

• Store things in recessed niches and a mirror cabinet instead of on the floor.

Before you choose, draw the room with its real wall lengths in our online floor plan maker and move the fixtures until every clearance works.

Bathroom Clearances: Code Minimums and ADA Rules

Two sets of rules decide most bathroom clearances in the US. The plumbing code sets the minimum space around every fixture; the figures below come from section 405.3.1 of the International Plumbing Code as published by the ICC (2018 text). One- and two-family homes usually fall under the International Residential Code (IRC), which has its own fixture-clearance rules. The 2010 ADA Standards set larger spaces for accessible bathrooms in public and commercial buildings. States and cities adopt their own editions and amendments, so check the code that applies to your project.

Toilet Clearance Requirements

Under IPC 405.3.1, a toilet's centerline must be at least 15 in (381 mm) from a side wall, partition, vanity or other obstruction and at least 30 in (762 mm) from the centerline of an adjacent fixture, and the toilet needs at least 21 in (533 mm) of clear space in front of it to any wall, fixture or door. A toilet compartment must be at least 30 in (762 mm) wide and 60 in (1524 mm) deep for a floor-mounted toilet, or 56 in (1422 mm) deep for a wall-hung one.

In an ADA bathroom, the toilet's centerline is 16 to 18 in (405 to 455 mm) from the side wall, and a clear space of at least 60 in (1525 mm) measured from the side wall by 56 in (1420 mm) measured from the rear wall surrounds it. The NKBA's planning guidelines recommend more generous spaces than the code minimums for comfort.

Sink, Shower and Tub Clearances

The same IPC section applies to sinks (lavatories) and bidets: 15 in (381 mm) from the centerline to a side wall or obstruction, 30 in (762 mm) between the centerlines of the two sinks of a double vanity, and 21 in (533 mm) clear in front. Shower and tub sizes are set in other sections of the plumbing code, so check them in the edition you work under. For accessible rooms, the ADA sets the shower sizes, the clear space along a tub and the sink height listed in the ADA section below.

Door Width and Door Swing

The ADA requires a door clear width of at least 32 in (815 mm), measured with the door open 90 degrees, and does not let a door swing into the clear space of any fixture, except in a single-user room with a 30 × 48 in (760 × 1220 mm) clear space beyond the door swing. In homes, the same 32 in is a sensible target wherever someone may use a wheelchair or a walker. In tight bathrooms, a pocket door or a door that swings out keeps the space in front of the fixtures free.

Clearance Table: Plumbing Code vs. ADA

Figures as of October 2026. A dash means the rule is not part of that source; other sections of your code may set it. The IPC figures come from ICC's text of the 2018 edition, and later editions and local amendments may differ; the ADA figures come from the 2010 ADA Standards. This table is a planning aid, not legal advice.

ADA Bathroom Layout Requirements

The 2010 ADA Standards for Accessible Design apply to public and commercial buildings, including the residential facilities they cover, where each dwelling unit that must provide mobility features needs at least one bathroom that complies (809.4). They do not apply to private homes, but their figures are a useful benchmark for aging-in-place and universal design. The rules that shape the layout:

• Turning space: a 60-in (1525 mm) circle, or a T-shape within a 60-in square with arms 36 in (915 mm) wide (304.3). The clearances at fixtures and the turning space may overlap (603.2.2), and the door may swing into the turning space (603.2.3).

• Toilet: centerline 16–18 in (405–455 mm) from the side wall (604.2), a clear space 60 in (1525 mm) from the side wall by 56 in (1420 mm) from the rear wall (604.3.1) and a seat 17–19 in (430–485 mm) high (604.4).

• Grab bars: 33–36 in (840–915 mm) above the floor (609.4), at least 42 in (1065 mm) long on the side wall and 36 in (915 mm) on the rear wall (604.5).

• Sink: a 30 × 48 in (760 × 1220 mm) clear floor space for a forward approach with knee and toe clearance below (606.2), and the rim or counter no higher than 34 in (865 mm) (606.3).

• Shower: a transfer shower is 36 × 36 in (915 × 915 mm) inside with a 36 × 48 in (915 × 1220 mm) clear space in front (608.2.1); a roll-in shower is at least 30 × 60 in (760 × 1525 mm) (608.2.2), or 36 × 60 in (915 × 1525 mm) in the alternate type (608.2.3).

• Bathtub: a clear space 30 in (760 mm) wide along the full length of the tub, extended 12 in (305 mm) beyond the head end when the tub has a permanent seat (607.2).

• Door: a clear width of 32 in (815 mm) (404.2.3); the door may not swing into the clear space of any fixture, except in a single-user room with a 30 × 48 in clear space beyond the door swing (603.2.3).

• Toilet stalls: a wheelchair-accessible stall is at least 60 in (1525 mm) wide and 56 in (1420 mm) deep with a wall-hung toilet, or 59 in (1500 mm) deep with a floor-mounted one (604.8.1.1).

How big is an ADA bathroom? The Standards set no room size: it follows from these spaces, and because the turning space may overlap the fixture clearances, a careful plan needs less floor area than the sum of its parts. Draw the room and check each rule on the plan.

Figures from the 2010 ADA Standards, read in October 2026; the U.S. Access Board explains them with drawings in its guides to toilet rooms and bathing rooms. State and local accessibility codes may add requirements, and this guide is not legal advice: confirm the rules for your project with the authority having jurisdiction.

Checking ADA Clearances in Revit and Other BIM Tools

BIM tools such as Revit or ArchiCAD place fixtures, but the clearances around them are easy to lose in a model. Draw them in the plan view as elements of their own: a 60-in (1525 mm) circle for the turning space (the ADA term is turning space, a 60-in diameter, not a 60-in radius), a 60 × 56 in (1525 × 1420 mm) area at the toilet and a 30 × 48 in (760 × 1220 mm) area at the sink. Saved as reusable components, a family in Revit or a block in AutoCAD, and placed with each fixture, they make overlaps with walls, door swings and other fixtures visible on every plan. They are a visual check: whether the room complies is still decided by the code that applies and by the plan reviewer.

How to Plan a Bathroom Layout Step by Step

These eight steps take a bathroom from a measured room to a plan the client and the contractor can use. They start with what cannot move and end with the checks.

Step 1: Measure the Room and Record the Plumbing

Measure every wall, alcove and shaft to the nearest 1/4 in (about 6 mm), with the ceiling height and the door and window positions. Record the existing drain centerlines, supply stub-outs and vent stack: these fixed points decide where fixtures can go without costly rerouting. A laser distance meter is more reliable than a tape in irregular rooms. Then draw the room in our free floor plan creator, in a desktop browser, by hand or over a photo of your sketch with the scale set from one wall you measured; each room shows its area as you draw.

Step 2: Check the Structure and the Wet Wall

Mark load-bearing walls and the direction of the floor joists. Stacking bathrooms above one another, with the plumbing in the same wall on each floor, shortens the pipe runs. Confirm the joist size and direction before you route a new drain: the residential code limits how joists may be notched and drilled (IRC section R502.8 for wood floors), so ask a structural engineer before you commit to a layout that cuts into them.

Step 3: Mark the Door, the Window and the Vents

Draw the full door swing, usually 90 degrees, the window sill heights and any heating or cooling grilles that must stay clear. They create zones where fixtures and cabinets cannot go. In Floor Plan Maker, place the door, flip its swing or hinge and set its width; windows take a width, a height and a sill.

Step 4: Place the Toilet First

The toilet goes first because it has the largest drain in the room and the least freedom: its outlet sits at a fixed distance from the wall behind it, the rough-in, which varies by model, so check the maker's specification sheet. Keep its centerline at least 15 in (381 mm) from a side wall, the tub or the vanity, and leave 21 in (533 mm) clear in front (IPC 405.3.1).

Step 5: Position the Shower or Tub

Line up the shower or tub drain with the existing or planned drain lines under the floor. For a curbless shower, plan the floor recess and the fall to the drain early with the plumber, because the floor has to slope without a step at the entry. Check the shower size and the floor slope against the plumbing code you work under.

Step 6: Add the Vanity, Sink and Storage

Place the vanity where the supply and drain lines reach it easily, with the sink's centerline at least 15 in (381 mm) from a side wall and 21 in (533 mm) clear in front; two sinks need their centerlines at least 30 in (762 mm) apart. Leave room for cabinet doors and drawers to open; a medicine cabinet or a linen tower fills the remaining wall without entering a clearance. In Floor Plan Maker the toilet, sinks, shower and tub come from the furniture library (153 pieces, with a bedrooms & baths category); resize, rotate or flip them until the clearances work.

In Floor Plan Maker's 2D editor each room shows its name and area, and doors show their swing.

Step 7: Check Every Clearance

Before you settle the plan, add dimension lines and compare them with the tables above: the toilet and sink centerlines, the space in front of each fixture, the door swing and, in an accessible room, the 60-in (1525 mm) turning space. Floor Plan Maker, like the other planners in this guide, does not check codes for you, and states and cities amend the model codes, so confirm each figure in the code your jurisdiction adopted.

Step 8: Review in 3D and Prepare the Drawings

Switch to 3D to check sightlines, the mirror against the door and how the room feels, then annotate the dimensions, fixture models and finishes. In Floor Plan Maker the same plan opens in 3D and in a first-person walkthrough, and it exports as DXF for AutoCAD, where you can save it as DWG, or as PDF for the client. A render of the plan or of a 3D scene uses ArchiVinci render credits.

Common Bathroom Layout Mistakes and How to Avoid Them

Ignoring the Existing Drains and Stack

The mistake: laying out the bathroom for looks, then finding the toilet drain far from the nearest stack. Moving a toilet drain through a concrete slab or across joists adds cost and time to any project.

The fix: record the drains and the stack first and treat them as fixed. Move them only when the budget and the structure allow it.

Too Little Space Beside the Toilet

The mistake: a toilet centerline less than 15 in (381 mm) from a side wall, the tub or the vanity, below the IPC minimum, which is easy to miss in a tight room.

The fix: dimension the centerline on the plan before you choose the vanity width, and keep 21 in (533 mm) clear in front of the toilet.

Overlooking ADA Requirements in Multi-Unit or Commercial Projects

The mistake: drawing every bathroom to the plumbing-code minimums and finding late in plan review that some units or the public toilet rooms had to meet the ADA, which forces a redesign.

The fix: identify which rooms and units must be accessible at the programming stage, with your code consultant, and draw those to the ADA figures from the start.

Door Swing Conflicts With Fixtures

The mistake: a door that swings in and hits the toilet, the vanity or the shower entry. In an ADA room it is also a code issue, because a door may not swing into a fixture's clear space.

The fix: draw the full swing arc on the plan, and use a pocket door or an outward swing in tight rooms. In Floor Plan Maker doors show their swing, which you can flip.

Poor Ventilation Placement

The mistake: an exhaust fan far from the shower or right above the toilet, where it removes little steam. Poor exhaust encourages mold and moisture damage.

The fix: put the fan above or next to the shower and exhaust it directly outdoors. ASHRAE Standard 62.2 sets bathroom exhaust at 50 cfm (about 24 L/s) when the fan runs on demand or 20 cfm (about 9.4 L/s) when it runs continuously, and ENERGY STAR's checklist for new homes asks for the same rates. Mark the fan in the layout, not later during electrical coordination.

Best Bathroom Layout Planners in 2026

A bathroom layout planner is software for drawing the room, its doors and windows and its fixtures at their real dimensions before work starts. The planners below all draw in 2D and show the room in 3D; they differ in price, platforms and export. None of them checks a layout against the plumbing code or the ADA; SmartDraw's own bathroom guide tells users to read up on local clearances themselves.

Manufacturers offer planners too: the IKEA Bathroom Planner plans a bathroom on IKEA's site, and Kaldewei's online bathroom planner starts from sample bathrooms, lets you add doors and windows and place Kaldewei products, and sends the finished plan to you or to a Kaldewei tradesman. They are built around the maker's own products.

Construction documents are usually drawn in CAD or BIM software such as AutoCAD or Revit; our list of the best floor plan software compares them with the online planners, with prices checked in October 2026.

Can Software Plan the Layout for You?

Partly. As of October 2026, software helps in three ways:

• Reading an existing plan: RoomSketcher's AI Convert, Planner 5D's AI floor plan recognition and Floor Plan Maker turn a plan image into an editable plan. Check walls and dimensions afterwards, because AI can misread them.

• Proposing a layout: SmartDraw AI generates conceptual bathroom layouts from a written prompt, and Floor Plan Maker's generator builds a whole furnished home, bathrooms included, from a short brief, free and without AI; Try another layout gives a new variation. Treat both as a first draft and check every clearance.

• Showing the look: image tools such as ArchiVinci's show new tiles, fixtures and light on a photo or a model view, but they make images, not dimensioned plans.

What software cannot judge is the site: hidden plumbing, the condition of the joists, local amendments and the client's priorities, or what an experienced designer weighs beyond geometry, such as daylight, acoustic privacy next to a bedroom and the order of work on site. Where your jurisdiction requires it, a licensed architect or engineer still reviews the construction drawings.

Where ArchiVinci Fits in Bathroom Planning

ArchiVinci has no planner made only for bathrooms. Two of its tools cover the drawing and the look of a bathroom, and a third renders a modelled view:

• Draw the layout: Floor Plan Maker runs free in desktop browsers: walls, doors with their swing, windows, fixtures and dimension lines, with each room's area in feet and inches or in meters, then a 3D view, a walkthrough and export to DXF, PDF, SVG, PNG, GLB or OBJ. Rebuilding an existing plan image or PDF with AI costs 1 credit on a free account and is refunded if the conversion fails.

• See the new look in the real room: AI bathroom design starts from a photo of the bathroom you have. Describe the tiles, vanity, shower and light, and ArchiVinci generates a new image that follows your photo, in seconds. To try your own tile on one wall, mark the wall with Edit render under the result and apply a photo of the sample as the texture.

• Show a modelled view: if you model the bathroom in Revit, SketchUp or another 3D program, upload a view of it and describe the materials: AI rendering turns it into a photorealistic image that follows your view.

None of these tools measures a photo or checks a plan against the code, so check every clearance against the tables above. A new account starts with 3 free credits; using generated images for client work or marketing needs an active plan, and plans are on the pricing page.

2D vs. 3D Bathroom Planning: Choosing the Right Mode for Your Workflow

When 2D Planning Is the Right Starting Point

• Testing layouts: a 2D plan is faster to change when you compare fixture arrangements.

• Contractor markups: tradespeople read a dimensioned 2D plan more easily than a 3D image.

• Permit drawings: permit sets are 2D plans, sections and elevations.

• Lighter files: 2D files open and share faster during reviews.

When a 3D View Wins Client Approval Faster

• Materials and finishes: clients judge tile patterns, counters and fixture styles more easily in 3D.

• Spatial understanding: many clients find a plan hard to read, and a 3D walkthrough shows them the room.

• Presentations: a rendered view makes the design concrete in a client meeting.

• Conflicts: 3D shows sightline and proportion problems, such as a mirror blocked by the door, that a plan can hide.

From the 2D Plan to a 3D View

In Floor Plan Maker the 2D plan and the 3D view are one project: finishes for floors, walls and doors show in both, the 3D view orbits the plan or shows its massing, and a first-person walkthrough lets a client step into the bathroom before anything is built. From the 3D view, a render shows the scene with lighting such as Daylight or Golden hour and, if you like, a sentence describing it.

When a client wants a different look on an existing room or render, you can modify the room design with AI: mark an area such as the vanity wall, describe the change, and ArchiVinci generates a new version of the image.

Export the Plan for the Contractor and the Client

Different readers need different files. The contractor needs a dimensioned drawing to build from, usually prepared in your CAD or BIM program; the client needs to understand the room, which a 3D view, a walkthrough or a rendered image does better than a technical drawing.

What to Put on a Construction Plan

Every construction-level bathroom plan should include:

• Overall room dimensions and wall-to-wall measurements

• Fixture centerlines for the toilet, the sink drain and the shower drain

• Rough-in distances from the finished walls

• Clearances drawn as dashed outlines

• A fixture schedule with manufacturer, model and finish

Floor Plan Maker exports the plan as DXF, which AutoCAD opens and can save as DWG for your drawing set, and as PDF, SVG or PNG; add the fixture schedule and the notes in your CAD program. For a presentation plan, AI floor plan coloring turns a plan image into a colored version in one of four styles (3D view, Marker, Solid color or Drawing) that follows the plan.

Present the Layout to Your Client

A walkthrough explains a bathroom better than a static PDF: in Floor Plan Maker you can walk through the room in first person, in full screen, during the meeting, and export GLB or OBJ for other 3D programs. Clients often catch their own concerns, such as "I did not realize the shower door opens toward the vanity", before the plan reaches the construction documents, where changes cost more.

Try it in ArchiVinci

To draw your bathroom with its real wall lengths and room areas, make a floor plan online, free in a desktop browser. To see a new look, upload a photo of the room and describe the change in a sentence: ArchiVinci generates a new image that follows your photo. A new account starts with 3 free credits.

• For this room: Bathroom design AI

• For a floor plan: AI floor plan furnishing

Frequently Asked Questions

What is the golden rule for bathroom layouts?

There is no official golden rule. A good rule of thumb is to plan around the plumbing: keep the fixtures on one wet wall where you can, give every toilet and sink 15 in (381 mm) to each side of its centerline and 21 in (533 mm) in front, and avoid a toilet that is the first thing seen from the door.

What are the minimum dimensions for a full bathroom?

A full bathroom with a toilet, a sink and a tub is usually about 5 × 8 ft (1.5 × 2.4 m), or 40 sq ft (3.7 m²): the tub runs across the 5-ft end and the toilet and vanity share one long wall. That is a typical size, not a legal minimum; the code sets the clearances (15 in to each side of a centerline and 21 in in front under IPC 405.3.1), and an accessible bathroom needs more room for the 60-in (1525 mm) turning space. Local codes may set other minimums.

Is a 5x8 bathroom small?

It is the standard size of a full bath in US homes, so it is compact rather than small: a 5-ft tub, a toilet and a single vanity fit on one wall with about 6 in (150 mm) to spare under the plumbing code. It is tight for two people at once or for a double vanity; for those, a larger room such as 8 × 8 ft (2.4 × 2.4 m) works better.

How do you lay out a small 5x8 bathroom?

Put the tub or tub-shower across the 5-ft wall opposite the door, then the toilet and the vanity along one long wall: the three-in-a-row layout, with all the plumbing in one wet wall. Keep the toilet's centerline at least 15 in (381 mm) from the tub and the vanity, the sink's centerline at least 30 in (762 mm) from the toilet's, and 21 in (533 mm) clear in front of each fixture. A pocket door or an outward-swinging door frees the space in front of the fixtures.

How much space do you need in front of a toilet?

At least 21 in (533 mm) of clear space in front of the toilet to any wall, fixture or door under IPC 405.3.1. An ADA toilet needs a clear space of 60 in (1525 mm) measured from the side wall by 56 in (1420 mm) from the rear wall. The NKBA's guidelines recommend more than the code minimum for comfort.

What is the smallest width a bathroom can be?

Under IPC 405.3.1 a toilet needs a strip at least 30 in (762 mm) wide, 15 in to each side of its centerline, so a toilet compartment can be 30 in wide and 60 in (1524 mm) deep with a floor-mounted toilet. A full bath with the tub across the end needs a width equal to the tub's length, usually 5 ft (1.5 m). Check your local code, which may set other figures.

What are ADA bathroom layout requirements?

Under the 2010 ADA Standards: a 60-in (1525 mm) turning space, as a circle or a T-shape; the toilet's centerline 16–18 in (405–455 mm) from the side wall with a 60 × 56 in (1525 × 1420 mm) clear space; grab bars 33–36 in (840–915 mm) high; a sink no higher than 34 in (865 mm) with a 30 × 48 in (760 × 1220 mm) forward approach and knee clearance; and a door with a 32-in (815 mm) clear width that does not swing into fixture clearances. They apply to public and commercial buildings; shower, tub and stall sizes are in the ADA section above.

What is the best free bathroom layout planner?

It depends on the task. Floor Plan Maker, ArchiVinci's planner, is free in a desktop browser for drawing, 3D, the walkthrough and export to DXF or PDF. Planner 5D and RoomSketcher have free plans, IKEA's planner works with IKEA furniture, and SketchUp Free models in 3D on the web. None of them checks your layout against the code.

Can I plan a bathroom layout on a tablet?

Not in Floor Plan Maker, which runs in desktop browsers only. RoomSketcher has a tablet app, and Planner 5D runs on iOS and Android. A practical split is to measure on site with a laser meter and a tablet or a paper sketch, then draw the plan on a desktop computer.

Can software design a bathroom layout that is ready for construction?

Not on its own. Planners and AI tools can read an existing plan, propose a first layout or show the look, but they do not know the hidden plumbing, the structure, local amendments or the client's priorities, and none of the planners in this guide checks the code. Where your jurisdiction requires it, a licensed architect or engineer should review the construction drawings.

What comes first when planning a bathroom: plumbing or layout?

Plumbing. Record the drain centerlines, supply stub-outs and vent stack before you settle the layout, because they are the most expensive elements to move. Then place the fixtures around them, starting with the toilet.

Can you move plumbing when redesigning a bathroom layout?

Yes, but the cost and complexity depend on how far it moves. Supply lines are relatively easy to move; drains need enough slope and a vent, so moving a drain, especially a toilet drain through a concrete slab, is the most expensive case. Have a licensed plumber check the existing pipes before you commit to a layout that moves drains.

What is the difference between a 2D and 3D bathroom planner?

A 2D planner draws the room from above with dimensions, fixture outlines and clearances; a 3D planner adds height, materials and an eye-level view. Designers use 2D to check clearances and brief contractors, and 3D to show clients the materials and the feel of the room. Floor Plan Maker does both: the same plan opens in 2D, in 3D and in a first-person walkthrough.