# Fuel Cost Calculator

> Estimate trip fuel use and cost in US or metric units.

Page: https://freecalculator.tech/tools/fuel-cost-calculator

## What will this trip cost in fuel?

Fuel cost is the distance divided by the fuel economy, multiplied by the price per unit of fuel you enter.

## Formula

US: fuel = distance ÷ MPG. Metric: fuel = distance × L/100 km ÷ 100. Cost = fuel × price × trips, doubled for a return journey.

- US: fuel = distance ÷ MPG. Metric: fuel = distance × L/100 km ÷ 100. Cost = fuel × price × trips, doubled for a return journey.
- Inputs used: Units, One-way distance, Fuel efficiency, Fuel price, Trips, Include return journey.
- Edge handling: One-way distance is required.; One-way distance cannot be negative.; One-way distance must be no more than 100000000.; Fuel efficiency is required.; Fuel efficiency must be greater than zero..

## Inputs

- Units
- One-way distance
- Fuel efficiency
- Fuel price
- Trips
- Include return journey

## Worked example: 100-mile trip at 25 MPG

At $3.50 per gallon, estimated fuel cost is $14.
1. Start with Units: us, One-way distance: 100, Fuel efficiency: 25, Fuel price: 3.5, Trips: 1, Include return journey: false.
2. Apply the method: US: fuel = distance ÷ MPG. Metric: fuel = distance × L/100 km ÷ 100. Cost = fuel × price × trips, doubled for a return journey.
3. At $3.50 per gallon, estimated fuel cost is $14.

## Common questions

### What will this trip cost in fuel?

Fuel cost is the distance divided by the fuel economy, multiplied by the price per unit of fuel you enter. Check the formula, example, and limitations on this page before using the result for a real everyday decision.

### Does MPG mode support imperial gallons?

No. MPG mode uses US gallons; metric mode uses litres per 100 kilometres.

### Are tolls included?

No. The result estimates fuel only.

### How do I use the Fuel Cost Calculator?

Enter the required values for Units, One-way distance, Fuel efficiency, Fuel price, Trips, and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.

### What formula does the Fuel Cost Calculator use?

US: fuel = distance ÷ MPG. Metric: fuel = distance × L/100 km ÷ 100. Cost = fuel × price × trips, doubled for a return journey. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.

### Can the Fuel Cost Calculator be used for exact decisions?

Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.

## Limitations and assumptions

- Inputs outside the supported range are rejected rather than forced into a result.
- The result depends on the values you enter for this fuel cost calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Cite this page

- APA: Free Calculator. (n.d.). Fuel Cost Calculator. https://freecalculator.tech/tools/fuel-cost-calculator
- MLA: "Fuel Cost Calculator." Free Calculator, https://freecalculator.tech/tools/fuel-cost-calculator.
- Link: Fuel Cost Calculator — Free Calculator, https://freecalculator.tech/tools/fuel-cost-calculator