Automotive Calculators
0-60 Time Calculator
Estimate a vehicle's 0-60 mph acceleration time from its weight, engine power, and drivetrain efficiency using a physics-based work-energy time formula.
Boat Fuel Consumption Calculator
Calculate marine engine fuel consumption and trip cost from burn rate and trip duration, or from cruising distance and speed, in gallons or liters used.
Brake Horsepower Calculator
Convert dyno-measured engine torque and RPM into brake horsepower using the standard crank-measured BHP formula, in imperial or metric units, as chosen.
Car Loan Calculator
Calculate monthly auto loan payments and total interest cost from vehicle price, sales tax, down payment, trade-in value, APR rate, and loan term length.
Compression Ratio Calculator
Calculate an engine's compression ratio from swept and clearance volume, or derive swept volume first from cylinder bore and stroke measurements taken.
Electric Vehicle Range Calculator
Estimate an electric vehicle's remaining driving range from battery capacity, an efficiency rating, and the current battery charge percentage left over.
Engine Swept Volume Calculator
Calculate total engine displacement in cc and liters from cylinder bore, piston stroke, and number of cylinders.
EV Charging Cost Calculator
Calculate the true cost to charge an EV battery between a set start and target charge percentage, accounting for charger efficiency losses in the total.
Fuel Cost Calculator
Work out exactly what a trip will cost at the pump using trip distance, your vehicle's real-world fuel economy, and the local price per gallon or liter.
Fuel Economy Calculator
Convert and calculate fuel economy figures across MPG (US), MPG (UK), L/100km, and km/L using exact, non-approximated conversion factors between units.
Gear Ratio Calculator
Calculate a vehicle or machinery gear ratio from tooth counts or from input and output RPM, and see how the ratio trades acceleration against top speed.
Horsepower Calculator
Calculate horsepower from torque and RPM using the standard dyno formula, or estimate it from vehicle weight and quarter-mile trap speed test result data.
Lease Payment Calculator
Estimate monthly lease payments from vehicle price, residual value, money factor, and lease term, with the depreciation and finance fee shown separately.
Mileage Calculator
Track fuel efficiency across multiple fill-ups and calculate real-world MPG or L/100km from odometer distance traveled and the fuel actually used each time.
RPM Calculator
Calculate engine RPM at a given road speed from transmission gear ratio, final drive (axle) ratio, and tire diameter, in imperial or metric units used.
RPM to Speed Calculator
Calculate road speed from engine RPM, transmission gear ratio, final drive (axle) ratio, and tire diameter, in either mph or km/h units, whichever chosen.
Stopping Distance Calculator
Calculate total vehicle stopping distance by combining reaction distance and braking distance, based on speed, reaction time, and road surface grip level.
Tire Speedometer Error Calculator
Calculate the actual speed and speedometer error percentage after changing to a different tire diameter.
Torque Calculator
Calculate torque from a known horsepower and RPM figure, or directly from an applied force and lever arm distance, in imperial or metric units, either way.
Torque to Horsepower Calculator
Convert any torque and RPM reading directly into horsepower using the standard SAE dyno conversion formula, in imperial or metric units, whichever chosen.
What It Actually Costs to Drive
A car's true cost is not just the loan payment — it is fuel, performance, and efficiency trade-offs that vary by vehicle and driving style. These seventeen calculators cover everything from monthly financing to horsepower, fuel economy, and stopping distance.
Cost Per Mile, Gas vs Electric
| Vehicle Type | Assumptions | Cost Per Mile |
|---|---|---|
| Gas car | 30 mpg at $3.50/gallon | 11.7¢ |
| Electric vehicle | 3.5 mi/kWh at $0.15/kWh | 4.3¢ |
Over 12,000 miles a year, that gap works out to roughly $888 in fuel costs alone — before factoring in each vehicle's different maintenance costs, and these figures shift with your local fuel and electricity prices. Compare your own numbers with the Fuel Cost Calculator and EV Charging Cost Calculator.
Popular Automotive Calculators
- 0-60 Time Calculator — estimates acceleration time from power-to-weight ratio.
- Car Loan Calculator — calculates monthly payment and total interest for vehicle financing, following the same amortization math as any other loan — a shorter term still means less total interest but a higher payment.
- Stopping Distance Calculator — estimates total stopping distance from speed, reaction time, and road conditions.
Real-world EV range often lands noticeably below the sticker rating — highway speed, cold weather, and heavy climate-control use all reduce range compared to the standardized test cycle.
Shopping for auto insurance too? See the Insurance Calculators, or check broader trip planning in Travel Calculators.