AllMyCalculators

Household Water Usage Calculator

Estimates household water use and shows where it goes.

L/min
L
L
L

Optional, from your bill. Include sewerage if billed on volume.

Litres per day
— L

Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.

Per person per day — L
Cubic metres per year — m³
Cost per year —
Where it goes

The formula

daily use = Σ uses per day

Garden use, drinking and leaks are not included.

What to watch out for

Your meter gives the real total. Use this to see which habit moves it most.

Frequently Asked Questions

How much water does a shower use?

At 9 L/min, an 8-minute shower uses 72 litres.