Auto Calculators

Fuel economy, gas trip cost, and car lease calculators for everyday driving and road trips in the U.S.

6 calculators in this category

Calculate your vehicle's miles per gallon (MPG) from the miles driven and gallons used at your last fill-up.

Find the total fuel cost of any road trip from the trip distance, your MPG, and current gas prices.

Estimate your monthly car lease payment from the MSRP, cap cost, residual value, money factor, and lease term.

Estimate engine horsepower from vehicle weight and quarter-mile trap speed using Huntington's formula — plus rough wheel-to-crank conversion.

Decode a P-Metric tire size (like 225/45R17) into overall diameter, sidewall, circumference, and revolutions per mile — and compare two sizes.

Estimate how much a car has lost in value — and what it will be worth after another few years — using typical U.S. depreciation curves.