Back to all calculators

Everyday

Water consumption calculator

Water consumption calculator: enter your values and get an instant free result.

Your result

Complete the fields and calculate.

Calculation method and formula

Litres per person per day [l] × People × 365 ÷ 1000 × Price per m³

Understand the inputs

Litres per person per day
Unit: l. Use a measured value or your own assumption.
People
Use a measured value or your own assumption.
Price per m³
Use a measured value or your own assumption.

Assumptions and limitations

Water volumes are converted from litres to m³. Hot-water costs use theoretical heat energy; storage, pipe and heating losses are excluded. Enter your current tariffs.

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

Worked example

Illustrative values. Replace them with your own inputs for your calculation.

Litres per person per day
125 l
People
3
Price per m³
2.2
Example result301.13 per year

Annual use: 136.88 m³.

Model revision: October 17, 2026 · How CleverCalc works

FAQ

Frequently asked questions

How does Water consumption calculator work?+

Litres per person per day [l] × People × 365 ÷ 1000 × Price per m³. Water volumes are converted from litres to m³. Hot-water costs use theoretical heat energy; storage, pipe and heating losses are excluded. Enter your current tariffs.

What assumptions should I consider for this result?+

Water volumes are converted from litres to m³. Hot-water costs use theoretical heat energy; storage, pipe and heating losses are excluded. Enter your current tariffs. The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation.

How accurate is the result?+

The formula uses the specified units. Displayed numbers are rounded; whole packs, item counts and full time periods may also be rounded within the calculation. Prices, measurements and model assumptions determine how well the result represents your situation.

Is this calculator free?+

Yes. Calculations and PDF export work without an account or registration.

What happens to my inputs?+

Calculations run in your browser. Results are saved locally only when you add them to My results; favourites and history are also local. Shared links contain your values. The currency tool requests the selected currencies from its rate provider without sending your amount.

Related document on CleverDocuFree document templates and practical PDF tools – directly in your browser with no sign-up.