How to Measure for a Bathroom Vanity: Step-by-Step Guide
Getting the right measurements before ordering a vanity is critical — not just for fitting it into your bathroom, but also for plumbing, flow, and installation. Whether you’re replacing an old unit or remodeling entirely, this guide will show you exactly how to measure for a bathroom vanity to ensure a perfect fit.
1. Measure the Available Width
Use a tape measure to determine the width of the wall where you want to place the vanity. Common widths are:
- 24″ – Great for powder rooms or half-baths
- 30″–36″ – Ideal for guest bathrooms or smaller primary baths
- 48″–72″ – Suitable for double sink setups or spacious master baths
2. Determine the Depth
Standard vanity depth is around 20″–22″, but some compact models go as shallow as 16″. Always measure from the wall to where the vanity front can safely end — ensuring drawers or doors don’t block traffic or other fixtures.
3. Check the Height
Today’s comfort height vanities sit around 34″–36″, but you can go lower for kids’ bathrooms or higher with vessel sinks. Be sure to measure from floor to top of counter (or sink if integrated).
Shop Addison 36″ Comfort Height Vanity →
4. Plan Around Plumbing
Don’t forget to measure the placement of your existing plumbing (water supply lines and drain). If you’re keeping the same plumbing setup, choose a vanity that aligns with it to avoid extra costs.
5. Allow for Clearance
Always leave space for door openings, drawers, and user access. A good rule of thumb is:
- At least 18″ in front of the vanity for movement
- 3″ on each side to prevent wall crowding
Bonus Tips
- Floating vanities: Give you freedom to set your own height — ideal for custom installs.
- Double vanities: Make sure each sink has about 30″ of space.
- Wall space: If you’re centering a mirror or lighting, factor in electrical placement.
Final Thoughts
Measuring your bathroom properly ensures a smoother shopping experience and avoids delays in installation. Once you know your dimensions, explore BATHUSA’s curated collection of vanities designed to fit every layout, from cozy guest baths to luxurious master suites.
Start shopping now at BATHUSA.com
Written by BATHUSA | Updated August 2025