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Fuel Cost Calculator NZ
Free fuel cost calculator: the petrol or diesel cost of a trip or your monthly commute from the distance, your car's L/100 km and today's price per litre, split between passengers.
Your trip
Fuel for this trip
$12.48
| Fuel used | 4.8 L |
| Cost per km | $0.21 |
| Per month | $249.60 |
| Per year | $2,995 |
Real fuel use is usually 10–20% above the brochure figure, more in city traffic and with the air-con on. To measure yours: fill the tank, note the km, fill again, then litres ÷ km × 100. If your car shows km per litre, 100 ÷ km/L gives L/100 km.
Fuel only: tolls, parking, servicing and wear are not included. Not legal, tax or financial advice. 🔒 Everything stays on your device.
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Questions people ask
How do I work out fuel cost for a trip?+
Distance × litres per 100 km ÷ 100 × price per litre. 200 km at 8 L/100 km and $2.60 is 16 L, or $41.60 a litre.
How do I convert km per litre to L/100 km?+
Divide 100 by km per litre: 12.5 km/L is 8 L/100 km.