Kitchen & Bathroom Sink Calculators
Free, practical tools for anyone planning a sink — estimate household water use, price a sink installation, size a bowl's capacity, set the right drain slope, cost out the dishwasher, and mark a countertop cutout.
Water Usage Calculator
Estimate your household's daily, monthly, and yearly water use and cost from showers, flushes, the tap, and dishwasher and laundry loads — and see how low-flow fixtures change the total
Sink Installation Cost Calculator
Price an installed kitchen or bathroom sink from its mount type and material, plus labor and extras like a faucet, disposal, and plumbing changes, with a realistic low-to-high range
Sink Capacity Calculator
Find how much water a sink bowl holds — in gallons and liters — from its inside length, width, and depth, for a square-cornered or a rounded basin
Drain Slope Calculator
Work out the right fall for a sink drain line — total drop and percent grade from a run and slope, or the slope from a measured drop — to meet the 1/4-inch-per-foot standard
Dishwasher Cost Calculator
See what running your dishwasher costs in water and electricity each week and year — and how its water use compares to washing the same loads by hand at the sink
Countertop Cutout Calculator
Get the countertop cutout dimensions for a new sink — length, width, corner radius, and front setback — for a drop-in with a rim lip or an undermount with a reveal