How do I calculate MPG?

MPG (Miles Per Gallon) = Miles Driven / Gallons Used. Fill your tank, drive until nearly empty, refill and note gallons used and miles driven.

Average new cars get 25–35 MPG combined. Hybrids achieve 40–60 MPG. Trucks and SUVs typically range from 15–25 MPG. Electric vehicles are rated in MPGe.

How do I reduce fuel costs?

Maintain steady speeds, keep tires inflated, reduce idling, use cruise control on highways, and keep up with maintenance such as air filters and spark plugs.

What is the difference between city and highway MPG?

City MPG reflects stop-and-go driving, which uses more fuel. Highway MPG reflects steady highway cruising, which is more efficient. Combined MPG averages the two.

Gas Mileage Calculator

Calculate your car's fuel economy in MPG and cost per mile. Track fuel efficiency and spending for any trip or fill-up.

Miles Driven ?

Gallons Used ?

gal

Gas Price per Gallon ?

Fuel Economy (MPG)

—

Cost per Mile —

Total Fuel Cost —

Extended More scenarios, charts & detailed breakdown ▾

Miles Since Last Fill

Gallons Used

gal

Gas Price / Gallon

MPG

—

Cost per Mile —

Total Fill Cost —

Professional Full parameters & maximum detail ▾

Gas Car MPG

MPG

EV MPGe

MPGe

Miles Driven per Year

miles

Gas Price / Gallon

Electricity Rate ($/kWh)

City Driving %

City MPG

MPG

Highway MPG

MPG

Real-World Fuel Economy

Blended Real-World MPG —

Annual Gas Cost —

EV Comparison

Annual EV Electricity Cost —

EV Annual Savings —

Environmental Impact

Gas CO₂ per Year (lbs) —

How to Use This Calculator

Fill your tank completely and reset your trip odometer.
Drive normally until your next fill-up.
Enter the Miles Driven from your trip odometer.
Enter the Gallons Used at the pump.
Enter the current Gas Price to see your total fuel cost and cost per mile.

Formula

MPG = Miles Driven / Gallons Used

Cost per Mile = (Gallons × Gas Price) / Miles Driven

Example

You drove 300 miles and used 10 gallons at $3.50/gallon.

MPG = 300 / 10 = 30 MPG
Total Cost = 10 × $3.50 = $35.00
Cost per Mile = $35 / 300 = $0.117/mi

Frequently Asked Questions

MPG (Miles Per Gallon) = Miles Driven / Gallons Used. Fill your tank, drive until nearly empty, refill and note gallons used and miles driven.
Average new cars get 25–35 MPG combined. Hybrids achieve 40–60 MPG. Trucks and SUVs typically range from 15–25 MPG. Electric vehicles are rated in MPGe.
Maintain steady speeds, keep tires inflated, reduce idling, use cruise control on highways, and keep up with maintenance such as air filters and spark plugs.
City MPG reflects stop-and-go driving, which uses more fuel. Highway MPG reflects steady highway cruising, which is more efficient. Combined MPG averages the two.