MPG Calculator

Calculate your vehicle's fuel efficiency in miles per gallon (MPG). Track how efficiently your car uses fuel and monitor maintenance issues.

Enter Your Measurements

Miles Driven(mi)

Gallons Used(gal)

Results

Miles Per Gallon

30.00

mpg

Formula

MPG = Miles Driven / Gallons Used

How to Use This Calculator

How to Use

1
Note your odometer reading before filling up with fuel.
2
Drive normally until your next fill-up.
3
Record the new odometer reading and gallons needed to fill up.
4
Calculate miles driven and enter both values.

Frequently Asked Questions

Why does my MPG vary?

MPG varies with driving habits, road conditions, vehicle load, weather, and maintenance. Highway driving usually yields better MPG than city driving.

What is good MPG?

Good MPG depends on your vehicle type. Sedans typically average 25-35 MPG, SUVs 18-25 MPG, and trucks 15-22 MPG.

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About This Calculator

This calculator uses the formula: MPG = Miles Driven / Gallons Used. All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.

Built and maintained by the CalcSmart team. Last updated March 2026.

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