GS / CALCULATOR

Tank runtime calculator

Calculate runtime from usable tank volume and hourly fuel consumption.

Start calculating
Sectional diesel day tank with fuel level and outlet piping beside a clock
GS / INPUTS

Estimate autonomy from available fuel

Enter tank volume, reserve percentage and hourly consumption. Match consumption to the expected load and generator model.

Inputs

Result18 hours
Usable fuel
900 L

This estimate assumes constant consumption. For a varying load, enter actual average fuel use.

Calculation method

Runtime hours = tank capacity × (1 − reserve% / 100) ÷ fuel L/h

Interpreting the result

Runtime assumes constant consumption. Account for unusable tank volume and refueling arrangements in the operational reserve.

The result is an initial estimate based on your inputs. Check equipment nameplates, manufacturer data, installation conditions and project requirements before final selection.