Automotive Calculators

ArrayKit's automotive calculators help you work out the running costs and performance figures of a vehicle — the fuel cost of a trip, gas mileage in MPG or L/100km, engine horsepower from quarter-mile or trap-speed data, and tire size dimensions and comparisons. Each calculator runs entirely in your browser, so the figures you enter stay on your device and nothing is uploaded. Use them to budget a road trip, compare the efficiency of two cars, check a tire upgrade or estimate power — with standard formulas and instant results.

• Fuel Cost Calculator — Estimate the fuel cost of a trip from distance, efficiency and price.
• Gas Mileage Calculator — Calculate MPG or L/100km from distance and fuel used, and convert.
• Mileage Reimbursement Calculator — Calculate mileage reimbursement from miles driven and a per-mile rate.
• Horsepower Calculator — Calculate horsepower from torque and RPM, or convert power units.
• Engine Horsepower Calculator — Estimate engine horsepower from quarter-mile ET or trap speed.
• Tire Size Calculator — Decode a tire size and compare two sizes for diameter and speedo error.

Frequently asked questions

Do I need to install anything to use these automotive calculators?

No. Every automotive calculator on ArrayKit runs directly in your browser, so there is nothing to install and the figures you enter are processed locally on your device.

Do the automotive calculators work with both MPG and L/100km?

Yes. The fuel and mileage calculators support US MPG, UK MPG and litres per 100 km, with unit toggles so you can work in whichever your car and country use.

Do the automotive calculators upload my data?

No. All of the math happens in your browser, so the numbers you type never leave your device or get uploaded to ArrayKit.

Which automotive calculators does ArrayKit offer?

The category covers fuel cost, gas mileage and trip mileage, engine and drivetrain horsepower estimates, and tire size dimensions and comparison calculators.