Gas mileage

Fuel per mile

Fuel per month

Miles since last fill-up
Gallons to fill the tank
Gas price ($ per gallon)
Miles per month
Trip distance (miles)

The values filled in are examples. For an accurate figure, fill the tank completely both times and use the trip meter.

Your fuel costs

Fuel cost per 100 miles by MPG

At your gas price. Find your car's rated MPG on its window sticker or at fueleconomy.gov.

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How it works

Gas mileage is miles driven ÷ gallons used: when you fill a full tank, the gallons you buy are the gallons you burned since the last full fill-up. Litres per 100 km is 235.2 ÷ MPG. Cost per mile is the gas price ÷ MPG; a trip, a month and a year are that times the miles.

Thinking about an electric car? The EV charging cost calculator compares the same driving at home, public and fast-charger rates.

What gas mileage are you getting?

Your fuel costs

Fuel cost per 100 miles by MPG

How it works