Bathroom Vanity Size Calculator

Estimate how much wall width remains for a vanity after subtracting obstructions and your preferred installation margins.

Total wall width (in)

Left-side obstruction (in)

Right-side obstruction (in)

Desired margin each side (in)

Enter wall dimensions to see usable width.

Width is only one constraint

Before ordering, confirm cabinet depth, door swing, drawer opening, plumbing rough-in, electrical locations, countertop overhang and any local clearance requirements.

Read the vanity planning guide →