Browse 42 free calculators in the Automotive category.
Lease Calculator - Vehicle price, down payment, residual and rate in - monthly lease payment out. Breaks down depreciation and finance charges separately so you see where each dollar goes.
Lease vs Loan Comparison Calculator - Same car, two financing paths - and a surprising cost gap. Enter price, lease terms and loan terms to see which option wins.
Engine Power Calculator - Three units, one engine. Convert between kilowatts (kW), horsepower (HP) and metric horsepower (PS) instantly. Enter any value - get all three formats plus a power-to-weight ratio if you add the vehicle mass.
Average Speed Calculator - How fast were you really going? Enter any two of the three values - distance, time or speed - and calculate the missing one. Works with km, miles, m/s and mph.
Fuel Consumption Calculator - Same car, same road - 6 L/100km in summer, 9 in winter. Track your real fuel consumption from fill-up data. Enter liters and kilometers, get L/100km, US MPG, UK MPG and a rating for your vehicle type.
Distance Converter - One constant, two systems. Convert kilometers to miles or miles to kilometers with the exact 1.60934 factor. Built for imported car odometers, race distances and cross-border road trips.
Speed Converter - Three speed units, one tool. Convert between kilometers per hour, miles per hour and meters per second. Enter any value - get both other formats instantly.
Engine Displacement Converter - Every engine spec sheet lists displacement twice - once in cc, once in liters. This converter bridges the gap. Type 1968 cc, read 1.968 L. Type 2.0 L, read 2000 cc. One rule: divide or multiply by 1,000.
Capacity Converter - Three liquid volume units, one click. Convert liters to US gallons, UK (Imperial) gallons and back. 1 US gal = 3.785 L, 1 UK gal = 4.546 L - the 20% difference matters when refueling abroad.
Vehicle Weight Converter - A 3,500 lb SUV in Detroit is a 1,588 kg family car in Berlin. Same vehicle, different numbers. This converter handles kg, pounds, metric tons, US short tons and UK long tons - five units, every direction.
Wheel Circumference Calculator - How much does switching from 205/55 R16 to 225/45 R17 change your speedometer reading? This calculator takes a tire size, computes the circumference, diameter and revolutions per kilometer - the three numbers that determine speedometer accuracy.
Tire Size Comparison Calculator - Two tire sizes, one table. Enter both sets of dimensions and see how circumference, diameter, speedometer reading and legal tolerance change between them.
Fuel Range Calculator - Fill the tank, reset the trip meter, drive. This calculator turns tank capacity and fuel consumption into a concrete number - how many kilometers before the next stop.
Braking Distance Calculator - Three surfaces, three friction coefficients, one formula. Enter your speed, pick the road condition and reaction time - the calculator returns reaction distance, braking distance and total stopping distance in meters.
Travel Time Calculator - How long does a 300 km drive actually take with breaks? Enter distance, average speed and optional break time - the calculator returns driving time, total trip duration and estimated arrival.
Oil Life Calculator - Every synthetic oil molecule starts degrading from kilometer one. Enter your oil type, current mileage since last change and engine type - the calculator returns remaining life, a visual progress bar and a recommended change date.
Turning Radius Calculator - Same parking lot, two different cars - one fits, one doesn't. Enter wheelbase and maximum steering angle to calculate the minimum turning radius and turning circle diameter. Compare compact cars, sedans, SUVs and trucks.
Car Maintenance Schedule Calculator - Your service book says 15,000 km or 12 months - but which deadline hits first? Enter your last service date, current mileage and manufacturer interval. The calculator shows exactly when your next service is due - by date or by distance, whichever comes first.
Torque Converter - Three torque units, one tool. Convert Newton-meters to pound-feet, kg-m and back. Exact factors: 1 Nm = 0.7376 lb-ft, 1 lb-ft = 1.3558 Nm. Built for importing US/UK cars, comparing engine specs and reading service manuals.
0-100 km/h Acceleration Calculator - Every car falls into one of six acceleration brackets - from hypercar territory under 3 seconds to commercial vans above 15. Enter engine power in HP, vehicle mass in kg and drivetrain type. The calculator returns theoretical and estimated real-world 0-100 km/h time plus a power-to-weight classification.
Centripetal Force Calculator - Enter speed, turn radius and vehicle mass. The calculator returns centripetal force in Newtons, lateral acceleration in m/s squared and g-force. Formula: F = mv squared / r.
Cost Per Kilometer Calculator - Enter consumption, fuel price and annual mileage. The calculator shows the true cost per kilometer - fuel plus insurance and service spread across every km you drive.
Commute Cost Calculator - Enter one-way distance, fuel consumption, price and work days. The calculator doubles the distance for the round trip and shows daily, monthly and annual commute cost. Compare driving vs transit, split costs with carpooling.
Tire Pressure Load Calculator - Enter base PSI from your door sticker, passenger count, cargo weight, season and speed. The calculator returns adjusted front and rear pressures with a breakdown of every correction.
Tire Wear Calculator - Enter current tread depth, tire type, annual mileage and driving style. The calculator estimates remaining kilometers to replacement, projected replacement date and cost per kilometer with a calm-vs-aggressive driving comparison.
Annual Car Cost Calculator - Enter fuel consumption, insurance, service costs and annual mileage. The calculator breaks down every expense category and shows total cost per year, per month and per kilometer with a 5-year projection.
Car Service Cost Calculator - Compare annual service costs between a dealer workshop and an independent mechanic. The calculator factors in vehicle segment, age, mileage and fuel type to produce a detailed cost breakdown with service intervals.
EV vs ICE Calculator - Same commute, two drivetrains, very different five-year totals. Enter purchase price, energy costs, service and insurance for both an electric and a gasoline car, then compare year-by-year TCO with a built-in break-even point.
EV Charging Cost Calculator - Three charging methods, one cost comparison. Pick your battery size, current charge level, target level and charging source. The calculator shows exact cost, gained range, charging time and a side-by-side table of all five source options - plus an optional gasoline comparison.
Public Transport vs Car Calculator - Monthly bus pass or a car payment, insurance and parking? Compare the full cost of public transport against car ownership on the same commute. Savings, cost per trip and CO2 side by side.
Bike vs Car Calculator - A 10 km bike commute costs under $30 a month in maintenance. The same route by car: $300-500 with fuel, parking and insurance. Compare both options and see calories burned on top.
Carpooling Cost Calculator - Split fuel and toll costs between 2-5 riders on any route. Enter distance, consumption and fuel price - the calculator shows cost per person and a scenario table for every group size.
EV Winter Range Calculator - Calculate your electric vehicle real range in cold temperatures. WLTP vs winter reality - see how much range you lose from freezing temperatures, cabin heating, winter tires and driving style.
Tread Depth Calculator - Measure your tire tread depth and find out how many kilometers you have left. The calculator shows wear percentage, estimated remaining mileage, replacement date and flags uneven wear patterns.
MPG to L/100km Converter - Convert fuel economy between MPG (miles per gallon) and L/100 km in both directions. Supports US gallons and UK Imperial gallons - just pick your system and enter the value.
Road Trip Calculator - How long does a 600 km drive actually take with rest stops every 2 hours, a fuel stop and lunch? Enter distance and speed - get total travel time with all breaks, estimated arrival and a breakdown of driving vs rest time.
Car CO2 Emissions Calculator - Most drivers never check their CO2 output. This calculator turns fuel consumption into concrete numbers - grams per kilometer, kilograms per year, tree equivalents and a comparison against the EU 95 g/km norm.
Travel Carbon Footprint Calculator - Every transport mode has a different CO2 price tag. This calculator compares car, train, bus and plane emissions on the same route - in grams per kilometer, total kilograms and tree equivalents.
LPG vs Gasoline Calculator - Same engine, two fuel bills. Compare annual fuel costs for LPG and gasoline, calculate how many kilometers your conversion kit needs to pay for itself, and see a 5-year savings projection with a full cost breakdown table.
Economic Driving Speed Calculator - How much does driving 140 km/h instead of 90 actually cost you? Enter your fuel consumption at 90 km/h, fuel price and trip distance - get a full speed-by-speed breakdown from 50 to 140 km/h showing consumption, trip cost, travel time and the price of every extra 10 minutes saved.
Trip Fuel Calculator - Two consumption numbers, one tank gauge, four answers. Enter city and highway consumption, trip distance and current fuel level - get blended consumption, total liters needed, whether your tank will last, and a refueling plan with stop-by-stop distances and costs.
CO2 Offset Calculator - Four emission sources, four tree types, one offset plan. Enter your CO2 from driving, flying, home heating or a custom value - get the number of trees needed, hectares of forest required, and estimated planting cost for deciduous, coniferous, fruit or fast-growing species.