Measure First. Buy the Right Fit.
Plan toilets, faucets, bathroom vanities, shower doors and bathtubs with clear dimensions, fit checks and model-specific specification references before you buy.
Measure by Fixture
Start with the exact fixture type, then verify the model drawing before ordering.
Before You Buy
Three checks prevent most bathroom fixture fit mistakes.
Measure the finished space
Use the finished wall, floor, deck or opening named in the guide.
Compare the real model
Match the exact model number to its current manufacturer drawing.
Confirm installation details
Check clearances, mounting, plumbing, code and installer requirements.
Popular Fit Tools
Use calculators as a planning screen, then confirm the manufacturer drawing and local requirements.
Toilet Fit Checker
Compare rough-in, front clearance and side clearance in one guided check.
Enter the finished-wall rough-in, bowl projection and the available side and front clearances. Use the result as a planning screen, then verify the exact model specification and local installation requirements before purchase.
Popular Size Guides
Direct answers, diagrams and comparison tables for the measurements shoppers check most often.
Toilet Rough-In
Measure from the finished wall to the closet-bolt center and compare 10, 12 and 14 inch models.
Faucet Hole Spacing
Identify single-hole, centerset and widespread patterns.
Vanity Sizes
Plan cabinet width, filler, plumbing and nearby door clearance.
Measure the finished space, then verify the model.
Our guides separate nominal size from actual product dimensions. We show where to place the tape, which clearances affect fit, and which details must be checked against the manufacturer specification sheet.
Common Fit Questions
Start with the measurement that can stop the purchase from fitting.
Is the rough-in really 12 inches?
Measure from the finished wall—not the baseboard—to the closet-bolt center.
Will the spout land inside the basin?
Compare hole centers, spout reach, basin position and backsplash clearance.
Is the opening square and plumb?
Measure top, middle and bottom after every finished surface is installed.
Media
Bathroom fit blogs and videos organized for measurement-first product research.
Latest Blogs
Browse Blogs →Publish a standard WordPress post and assign the matching category. The post will use this section's dedicated layout automatically.
Latest Video
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Specification Database
Compare published model dimensions and keep the source drawing open while you plan.
| Type | Model / Reference | Length / Width | Width / Spacing | Height | Fit Note |
|---|---|---|---|---|---|
| Toilet | Kohler Highline Arc K-26812 | 28-11/16 in | 17-11/16 in | 28-3/16 in | 12 in rough-in |
| Toilet | Kohler Santa Rosa K-3803 | 27-1/2 in | 18-3/4 in | 27 in | 12 in rough-in |
| Faucet | Centerset bathroom faucet | Model-specific | 4 in centers | Model-specific | 3-hole pattern |
| Faucet | Widespread bathroom faucet | Model-specific | 8–16 in centers | Model-specific | 3 independent pieces |
| Vanity | Common compact vanity | 18–24 in | 16–22 in | 30–36 in | Confirm drain/drawer fit |
| Vanity | Common double vanity | 60–72 in | 20–24 in | 30–36 in | Confirm two drain centers |
| Bathtub | Common alcove bathtub | 60 in | 30–32 in | 14–20 in | Measure flange and drain |
| Shower Door | Sliding door opening | Model-specific | Measure top/middle/bottom | Model-specific | Use smallest width |
Have a fit question? Start with the measurements.
Send the fixture type, available space and the model specification link. We will point you to the relevant measurement guide.