HOUSE MADE CLEAR · FREE PLANNING TOOL
Check a Simple Bathroom Layout
Check a defined arrangement: toilet and vanity side-by-side on one end, shower across the opposite end.
Your planning results
Important limitations: This is a fixed three-fixture concept—not an interactive floor-plan editor or code checker. Vanity/toilet are on one end wall, full-width shower on the other. Does not model doors, pipe positions, grab bars, accessibility, or local building codes.
How to Use the Bathroom Layout & Clearance Calculator
Planning a small bathroom? Our free Bathroom Layout & Clearance Calculator helps you check whether a toilet, vanity, and shower can fit in a rectangular bathroom while leaving room for movement.
Enter your bathroom and fixture measurements above to view a simple 2D layout, estimate the open space between fixtures, and identify potential clearance problems.
What Measurements Do You Need?
| Measurement | What to Enter |
|---|---|
| Bathroom width | Finished interior width across the toilet and vanity wall |
| Bathroom length | Finished interior length toward the shower |
| Vanity width | Overall width, including countertop overhang |
| Vanity depth | Distance the vanity projects into the room |
| Toilet width | Overall width of the toilet |
| Toilet projection | Distance from the rear wall to the front of the bowl |
| Shower depth | Distance the shower occupies from the opposite end wall |
The calculator supports U.S. and metric measurements.
Important: The tool assumes the vanity and toilet sit along one short wall, with a full-width shower at the opposite end. It does not model doors, plumbing locations, bathtubs, or alternative fixture arrangements.
For common room dimensions, see our Standard Bathroom Size Guide.
Understanding Your Bathroom Calculator Results
The calculator provides four results to help you evaluate the proposed layout.
1. Central Circulation Space
This is the open distance between the shower and the fixture that extends furthest from the opposite wall.
Formula:
Clear space = Bathroom length − Shower depth − Greater of vanity depth or toilet projection
For example:
- Bathroom length: 96 inches
- Shower depth: 30 inches
- Toilet projection: 28 inches
- Vanity depth: 18 inches
Remaining central space: 38 inches
The calculator uses 24 inches as an initial planning threshold for this open strip. That threshold is not a universal building-code requirement.
2. Toilet Side Clearance
The calculator checks the toilet centerline’s distance from the adjacent vanity and side wall.
For its preset arrangement, it positions the toilet centerline 15 inches from the right wall and calculates the distance to the vanity on the left.
For conventional fixtures, the 2024 International Plumbing Code, Section 405.3.1 specifies at least 15 inches from a toilet centerline to a side wall, vanity, or obstruction, and at least 21 inches of front clearance.
Our tool uses the 15-inch side measurement as a preliminary reference. It does not perform a complete code-compliance check.
For detailed measuring instructions, read our Toilet Clearance Guide.
3. Fixture Footprint Fit
This result evaluates whether the vanity, toilet, and shower fit inside the modeled room without overlapping the calculator’s preset fixture zones.
A “Fit preset footprints” result means the simplified arrangement is geometrically possible.
It does not confirm that the bathroom door, vanity drawers, shower entrance, or plumbing connections will function correctly.
4. Preliminary Layout Assessment
The calculator summarizes the proposed arrangement using three possible assessments:
| Result | Meaning |
|---|---|
| Promising preset | Fixture footprints and modeled side-clearance checks pass, with at least 24 inches in the central strip |
| Tight / review details | The arrangement fits geometrically but has limited clearance or another modeled concern |
| Does not fit preset | One or more fixture footprints overlap or extend beyond the modeled room |
These are planning assessments, not construction approvals.
Example: Can a Toilet, Vanity, and Shower Fit in a 5 × 8-Foot Bathroom?
A 5 × 8-foot bathroom is a familiar compact residential layout.
Consider these measurements:
| Measurement | Value |
|---|---|
| Bathroom width | 5 feet |
| Bathroom length | 8 feet |
| Vanity width | 24 inches |
| Vanity depth | 18 inches |
| Toilet width | 18 inches |
| Toilet projection | 28 inches |
| Shower depth | 30 inches |
Calculator results:
- Central circulation space: 38 inches
- Minimum modeled toilet centerline side distance: 15 inches
- Fixture footprints: Fit the preset arrangement
- Preliminary assessment: Promising preset
This arrangement passes the calculator’s simplified checks.
However, the bathroom entrance, shower-door opening, toilet installation requirements, and plumbing locations must be evaluated separately.
If you’re choosing a compact vanity, our Standard Bathroom Cabinet Sizes Guide explains common widths, depths, and countertop measurements.
Recommended Bathroom Fixture Clearances
Bathroom planning should account for both minimum clearances and comfortable everyday use.
| Clearance | Common Planning Reference |
|---|---|
| Toilet centerline to side obstruction | 15 inches minimum under IPC-based requirements |
| Comfortable toilet side spacing | Approximately 18 inches from centerline |
| Toilet front clearance | Commonly 21–24 inches minimum, depending on adopted code |
| Comfortable space in front of fixtures | Approximately 30 inches |
| Compact shower dimensions | Commonly 32 × 32 or 36 × 36 inches |
| Vanity depth | Approximately 18–22 inches for many residential models |
These measurements serve different purposes and should not be treated as interchangeable.
For shower sizing, explore our Small Shower Dimensions Guide.
What About Accessible Bathrooms?
Accessibility requires a more detailed assessment than this calculator provides.
Accessible toilet rooms may require substantially larger clear floor spaces, specific toilet positioning, grab bars, and door maneuvering clearances.
The U.S. Access Board’s Toilet Room Accessibility Guide explains these requirements for covered facilities.
The calculator should not be used to verify accessible bathroom compliance.
Common Bathroom Layout Mistakes to Avoid
Before purchasing fixtures or beginning renovation, check the following:
- Measuring unfinished walls: Tile, drywall, and other finishes reduce interior dimensions.
- Ignoring door swings: A bathroom or shower door may collide with nearby fixtures.
- Choosing an oversized vanity: A deeper cabinet can reduce circulation space.
- Forgetting drawer clearance: Vanity drawers need room to open and be used.
- Confusing toilet width with centerline clearance: The two measurements are different.
- Overlooking shower entry space: A shower may fit physically but still have an impractical entrance.
When choosing your vanity and basin, consult our Standard Bathroom Sink Dimensions Guide to verify the complete fixture measurements.
Practical tip: Mark the proposed fixture footprints on the floor with painter’s tape and test the walking routes, door movement, and drawer clearance before ordering.
Frequently Asked Questions
Can a toilet, vanity, and shower fit in a 5 × 8-foot bathroom?
Yes, some 5 × 8-foot bathrooms can accommodate all three fixtures. The result depends on their dimensions, arrangement, door location, and plumbing connections. The calculator checks one specific layout.
How much clearance is required around a toilet?
A common IPC-based minimum is 15 inches from the toilet centerline to each side obstruction and 21 inches in front. Other locally adopted codes may differ, and more space is generally preferable for comfort.
What size vanity works best in a small bathroom?
A 24-inch vanity is a common starting option for compact bathrooms. Shallow models around 18 inches deep may preserve more circulation space than conventional deeper cabinets.
How much space should be left between bathroom fixtures?
It depends on the fixtures and applicable requirements. Approximately 30 inches of clear space in front of commonly used fixtures is a useful comfort target, but minimum requirements and measurement points vary.
Does this calculator include bathroom doors and bathtubs?
No. The current calculator models a toilet, vanity, and full-width shower in a fixed arrangement. It does not calculate door swings, bathtubs, alternate layouts, or accessibility compliance.
More Bathroom Planning Resources
Accurate measurements make it easier to select suitable fixtures and avoid costly installation changes.
Explore our Standard Shower Pan Sizes Guide for additional enclosure dimensions, or visit our Free Home Planning Tools for other measurement calculators.
Plan before you renovate. Use the Bathroom Layout & Clearance Calculator above to compare dimensions, identify tight spaces, and review your proposed fixture arrangement before making a purchase.
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