How to Use the Bathroom Sink Height Calculator
A sink that's too low forces you to bend deeply every time you wash up, while one that's too high strains your shoulders and arms. Stock vanities come in fixed heights, but new construction or a remodel lets you set the height to fit the people who'll actually use it.
This calculator applies a simplified ergonomic rule: half your height, minus about 1.2 inches, as the recommended sink counter height. For someone 67 inches tall, that works out to roughly 32 inches — in line with the standard 32-36 inch range for US vanities.
Mirror height works best set about 4 inches above the sink height, so your whole face is visible naturally when standing at the sink. If household members vary a lot in height, use the average, or keep the sink lower and choose a tiltable mirror instead.
Frequently Asked Questions
It's common to calculate from the average height of household members, or to base it on whichever adult uses the sink most. If you have young children, adding a step stool is a simpler fix than changing the sink height.
Most standard US vanities sit around 32-36 inches high, so a difference of 2 inches or less from the calculated result shouldn't cause real discomfort. A gap over 4 inches may mean repeated bending or reaching that gets tiring over time.