Generator Fuel Cost Calculator

Estimates how much fuel a generator will burn for a given load and running time and what that fuel will cost.

Enter your numbers

Generator load (kW)

Example: 5

Running hours

Example: 8

Fuel use (litres per kWh)

Example: 0.35

Fuel price (Taka per litre)

Example: 110

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

fuelLiters = loadKw * hours * litersPerKwh; fuelCost = fuelLiters * fuelPrice

Enter the electrical load in kilowatts that the generator will carry, which is the sum of the appliances running at once.

Enter the running hours and the fuel the generator uses per kilowatt-hour, which for a small diesel set is often around a third of a litre.

The tool multiplies load, hours and fuel per kWh to get the litres and then multiplies by the fuel price to get the total cost.

Using the generator's rated output instead of the actual load, which overstates fuel use because most sets run well below full capacity.
Ignoring the no-load consumption, since a generator burns fuel even when the load is light and that adds to the real bill.

Use it to budget the running cost of a backup generator during load-shedding before you decide how long to run it.
Use it to check whether a smaller generator run longer is cheaper than a large one run briefly for the same job.

A 5 kW load running 8 hours at 0.35 litres per kWh with fuel at 110 Taka a litre uses about 14 litres and costs about 1540 Taka.

Fuel (litres) 14.00

Fuel cost ৳1,540.00

Does the estimate include the fuel used while starting?

No, it covers steady running only, so add a small amount for starting and idle time if the generator runs many short sessions a day.

Last updated: 2026-10-03