Home & Utility
Water volume and usage calculators for aquariums, swimming pools, and household water bills.
Most popular in Home & Utility
Aquarium Water Change Calculator
Weekly aquarium water-change volume based on tank size and stocking level.
Open calculatorSwimming Pool Volume Calculator
Calculate pool water volume in liters, cubic meters, and US gallons — for dosing chemicals accurately.
Open calculatorHousehold Water Bill Estimator
Estimate monthly water usage and bill for your household — and see where to save.
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Camping Water Needs
Trip water plan for drinking, cooking, and washing — with or without a filterable source.
OpenHot Tub Water Volume
Calculate hot tub water volume for chemical dosing.
OpenKoi Pond Water Change
Weekly water change volume for koi ponds.
OpenSaltwater Aquarium Water Change
Weekly water target for reef tanks.
OpenRV Water Usage Calculator
Fresh and grey tank sizing for road trips.
OpenShower Water Usage Calculator
How much water your daily showers really cost.
OpenLaundry Water Usage
Weekly laundry water usage estimate.
OpenDishwasher Water Usage
Compare dishwasher vs handwashing water use.
OpenShower Water Usage
Water used per shower.
OpenBath Water Usage
Water used per bath.
OpenDishwasher Water Usage
Water used per cycle.
OpenWashing Machine Water Usage
Water used per wash.
OpenSimple, accurate, personalized
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