Fuel Cost Calculator

Estimate the fuel cost of a journey from distance, economy, and price.

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Fuel Cost Calculator: The Complete Guide

Estimate what a journey will cost in fuel. Enter the distance, your vehicle's fuel economy, and the price of fuel to get the total cost and the cost per mile or kilometre.

Who the Fuel Cost Calculator is for

Drivers budgeting the fuel cost of a commute or journey before they set off.

How to use the Fuel Cost Calculator

  1. Type your values into the fields above — pick your currency or units where the calculator offers them.
  2. Results update automatically as you type; there's no submit button and nothing is sent to a server.
  3. Adjust any input to compare scenarios, then copy the result with a single click.

How it works

Fuel used = distance ÷ mpg (US) or distance ÷ 100 × L/100km (metric). Cost = fuel used × fuel price.

Features

  • Journey fuel cost
  • Cost per mile/km
  • US or metric units
  • Any currency

Knowing your fuel cost

Fuel is often the biggest variable cost of driving. Multiplying the fuel your trip uses by the pump price gives a clear figure for budgeting or comparing routes and vehicles. Enter your real-world economy (often a little worse than the official figure) for the most accurate estimate.

Frequently Asked Questions

Where do I find my fuel economy?

Check your vehicle's trip computer or handbook. Real-world economy is usually a bit lower than the official rating, so use your observed figure if you have it.

Does it work in metric?

Yes — switch units to enter kilometres, L/100km, and a per-litre price. The calculator handles the conversion.

Is this calculator free and private?

Yes. It's completely free with no signup, and every calculation runs locally in your browser, so your numbers never leave your device.

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