Bunker Calculator

Calculate sea and port fuel, safety margin and bunker cost from distance, speed and daily consumption. The calculation uses Voyage Economics Engine: Calculates voyage result and TCE from distance, speed, sea and port days, fuel, port, canal and hire costs.

The bunker calculation finds voyage fuel from distance, speed and daily consumption, port fuel from port days, and fuel cost from the price per tonne. Fuel is usually the largest voyage cost item.

Consumption varies roughly with the cube of speed: cutting speed by 10% lowers daily consumption by about 27%; keep a 3–10% margin for weather and currents.

Total fuel = [Sea fuel] + [Port fuel]. With the example values (Distance 3,200 nm, Speed 12.5 knots, Daily consumption at sea 28 t/gün, Days in port 4 days, Daily consumption in port 3 t/gün, Weather and safety margin 5 %) the result is 325.6 t.

Bunker cost = [Total fuel] × [Fuel price per ton]. With the example values (Distance 3,200 nm, Speed 12.5 knots, Daily consumption at sea 28 t/gün, Days in port 4 days, Daily consumption in port 3 t/gün, Weather and safety margin 5 %) the result is 201,872 USD.

Example values: Distance 3,200 nm, Speed 12.5 knots, Daily consumption at sea 28 t/gün, Days in port 4 days, Daily consumption in port 3 t/gün, Weather and safety margin 5 %. Sea days: 10.67 days; Sea fuel: 313.6 t; Port fuel: 12.0 t; Total fuel: 325.6 t; Bunker cost: 201,872 USD.

Yes. The tool is free, needs no sign-up and runs in your browser; the data you enter is not stored.

FCRSOFT records each voyage’s estimate and actual and calculates TCE automatically. You can try the Shipowner & Ship Management package in the live demo without installing anything.

Choose one of 28 currencies in the currency selector; monetary inputs are converted at an approximate rate. To use your own rate, enter the amounts directly.