Planning guide
Bathroom vanity size guide: the usable footprint matters more than the catalog width.
A 36-inch vanity is not a 36-inch decision until you account for the countertop, hardware, door swing, drawer pull-out and the person standing in front of it.
Measure these six things
- Clear wall width: subtract trim, returns and anything that cannot move.
- Finished depth: use the deepest point, including the countertop edge and handles.
- Walkway: mark the zone a person needs to stand and turn.
- Door and drawer swing: open every moving element on a floor plan.
- Plumbing center: determine whether the cabinet’s interior accommodates it without sacrificing all drawer space.
- Counter height: consider users, vessel sinks and mirror placement together.
Common width ranges
| Vanity width | Typical use | Planning note |
|---|---|---|
| 18–24 in. | Powder rooms and compact baths | Prioritize handwashing room and wall clearance over storage. |
| 30–36 in. | Standard single-sink baths | Often the best balance of counter area and circulation. |
| 42–60 in. | Primary or shared baths | Decide whether more drawers or a wider sink serves the room better. |
| 60–72 in.+ | Double-sink layouts | Confirm center spacing, mirror/lighting layout and two-person use. |
Depth: the dimension people forget
Standard vanities are often around 18–22 inches deep, but a few inches can make a narrow room feel materially different. If depth is tight, consider a shallower cabinet, wall-mounted design, offset sink or a smaller basin rather than forcing a deep box into the traffic path.
One sink or two?
Two sinks solve simultaneous routines only if there is enough counter space between them and each user keeps functional drawer storage. In a compact room, one generous sink plus drawers can be more useful than two cramped bowls.
Continue with cabinet and cupboard choices.