Automotive

Calculators for fuel economy, trip costs, tire sizing, and vehicle-related math for drivers and car enthusiasts.

MPG Calculator

Calculate fuel economy in MPG, L/100km, and km/L — enter distance and fuel used, plus estimate trip fuel cost.

Automotive
Fuel Cost Calculator

Estimate fuel cost for any trip — enter distance, fuel economy, and gas price to get total cost, fuel needed, and cost per mile.

Automotive
Tire Size Calculator

Decode tire size markings, calculate overall diameter, circumference, sidewall height, and compare two tire sizes side by side.

Automotive
Engine Horsepower Calculator

Calculate engine horsepower from torque and RPM, convert between HP, kW, and PS, and estimate quarter-mile time from HP and vehicle weight.

Automotive
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Automotive Calculators

From calculating fuel economy in MPG or liters per 100 km to estimating trip fuel costs, our automotive calculators help drivers make informed decisions. Each tool accounts for regional fuel standards, local gas prices, and measurement conventions — whether you measure in miles per gallon in the United States or liters per 100 kilometers in Europe and the rest of the world.