Fuel is one of the biggest variable costs of driving, yet most people only discover it at the pump. This calculator puts a clear number on any journey — and surfaces the per-distance figure that makes real cost comparisons possible.
The three inputs
Fuel cost is simply distance multiplied by how much the engine drinks per unit of distance, multiplied again by the price per unit of fuel. It sounds trivial, but each input is a lever you can actually pull — drive less, drive more efficiently, or buy fuel smarter.
Real economy vs the sticker
Manufacturers' figures come from controlled tests and rarely match real driving. Traffic, speed, air conditioning, cold starts and load all push actual consumption up. Measuring over a full tank gives the honest number this calculator needs.
Cost per distance as the true unit
Focusing on cost per kilometre or mile turns 'the drive is not that far' into a concrete comparison. Two cars can have very different total costs despite similar size, and the per-distance figure is what reveals it.
Frequently asked questions
Multiply the distance by your consumption and the fuel price — this calculator does it automatically. For example, 200 km at 7.5 L/100km uses 15 L; at $1.60/L that's $24.
Divide total fuel cost by distance. This calculator shows cost per km (or mile) directly, which makes comparing vehicles and journeys easy.
Frequently yes — real-world consumption often exceeds official figures by 10–20% due to traffic, load, tyres and driving style. Use a measured figure for an accurate estimate.