Shower cost calculator

L = Flow rate [l/min] × Minutes per shower [min] × Showers per month; L ÷ 1000 × Water price per m³ + L × Hot-water share [%] ÷ 100 × Temperature rise [°C] × 0.001163 × Energy price per kWh. 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.

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.

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.

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

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.