Free Automotive & Car Calculators

Calculate fuel costs, performance specs, maintenance schedules, and car buying costs — all for free. No signup, no guesswork.

Browse by Category

Fuel & Costs

MPG, fuel cost per trip, cost per mile, annual fuel, gas vs diesel, hybrid savings, road trip fuel, and idling cost calculators.

8 calculators

Performance & Speed

0-60 time, horsepower to weight, quarter mile, top speed, tire size, gear ratio, turbo boost, and engine displacement calculators.

8 calculators

Maintenance & Wear

Oil change interval, tire life, brake pad life, battery life, car depreciation, maintenance cost, transmission fluid, and coolant calculators.

8 calculators

Buying & Selling

Loan payment, lease vs buy, true cost of ownership, trade-in value, insurance cost, car affordability, sales tax, and registration fee calculators.

8 calculators

Popular Calculators

MPG Calculator

Calculate your vehicle miles per gallon from distance traveled and fuel used. Track fuel efficiency over time and compare to EPA estimates.

fuel-costs

Fuel Cost Per Trip Calculator

Estimate the total fuel cost for any trip based on distance, your vehicle MPG, and current gas price. Plan road trip budgets accurately.

fuel-costs

Annual Fuel Cost Calculator

Estimate your yearly fuel expense based on annual mileage, vehicle MPG, and gas prices. Budget your transportation costs accurately.

fuel-costs

Road Trip Fuel Planner

Plan fuel stops for a long road trip. Calculate total fuel cost, number of fill-ups needed, and optimal stop intervals for your vehicle.

fuel-costs

0-60 MPH Time Estimator

Estimate your vehicle 0-60 MPH time based on horsepower, weight, and drivetrain. Compare to manufacturer specs and see how modifications affect performance.

performance

Quarter Mile Calculator

Estimate quarter-mile elapsed time and trap speed from vehicle horsepower and weight. Use for drag racing estimates or performance comparison.

performance

Turbo Boost HP Gain Calculator

Estimate horsepower gain from turbocharging based on boost pressure, engine displacement, and efficiency. Plan your forced induction build.

performance

Oil Change Interval Calculator

Determine the optimal oil change interval based on your driving conditions, oil type, and vehicle age. Avoid over-servicing or damaging your engine.

maintenance

Tire Life & Rotation Calculator

Estimate remaining tire life based on tread depth, driving habits, and tire type. Get a rotation schedule to maximize tire longevity.

maintenance

Car Depreciation Calculator

Estimate your vehicle current value and future depreciation based on purchase price, age, and mileage. See how much value your car loses each year.

maintenance

Our Calculator Network

Part of a family of 40+ free calculator sites

AquaCalcs

Aquarium & fish keeping calculators

AudioCalcs

Audio & sound calculators

BabyCalcs

Nursery & baby calculators

BikeCalcs

Cycling & bike fitting calculators

BoatCalcs

Boating & marine calculators

CalcSuite

Finance calculators
View All 40+ Sites →