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Home › Vehicle & Transportation Calculators › Wheel Offset Calculator Wheel Offset CalculatorWheel Offset & Backspacing Calculator — Poke and Clearance Backspacing (in) = (wheel width + 1) ÷ 2 + offset (mm) ÷ 25.4. Compare your current wheels with new ones and see exactly how far the new set will stick out (poke) or

Home › Vehicle & Transportation Calculators › Speedometer Calibration Calculator Speedometer Calibration CalculatorSpeedometer Error & Correction Factor for New Tires Speedometer error (%) = (new tire diameter ÷ original diameter − 1) × 100, and true speed = indicated speed × new diameter ÷ original diameter. Changed your tire size or checked your speed against

Home › Vehicle & Transportation Calculators › Tire Size Calculator Tire Size CalculatorTire Size Comparison Calculator & Diameter Converter Type any tire size — metric like 265/70R17 or flotation like 33×12.50R17 — to get its diameter, width, sidewall height and revolutions per mile. Add a second size to compare them side by side, see your

Home › Vehicle & Transportation Calculators › Cost of Car Ownership Calculator Cost of Car Ownership CalculatorTrue Cost to Own a Car — Per Year, Month & Mile Total cost of ownership = depreciation + loan interest + fuel + insurance + maintenance + repairs + registration. Add up everything a car really costs —

Home › Vehicle & Transportation Calculators › Car Sales Tax Calculator Car Sales Tax CalculatorVehicle Sales Tax by State & Out-the-Door Price Car sales tax = taxable price × (state rate + local rate). Estimate the sales tax on a new or used car in any state, with trade-in credit, rebates, dealer fees and registration

Home › Vehicle & Transportation Calculators › Car Affordability Calculator Car Affordability CalculatorHow Much Car Can I Afford? (20/4/10 Rule) The 20/4/10 rule says: put at least 20% down, finance for no more than 4 years, and keep total car costs — payment, insurance and fuel — under 10% of gross income. Find a realistic

Home › Vehicle & Transportation Calculators › EV vs Gas Calculator EV vs Gas CalculatorElectric vs Gas Car Cost Comparison & Break-Even An EV is cheaper to run, but it pays off only when the yearly savings cover its higher price. Compare an electric car with a gas car on what matters: purchase price, charging

Home › Vehicle & Transportation Calculators › EV Charging Time Calculator EV Charging Time CalculatorHow Long to Charge an Electric Car (Level 1, Level 2, DC Fast) Charging time ≈ kWh needed ÷ charging power (after losses). See how long it takes to charge your EV from any percentage to any percentage. Accounts for your

Home › Vehicle & Transportation Calculators › EV Charging Cost Calculator EV Charging Cost CalculatorCost to Charge an Electric Car at Home or in Public Charging cost = kWh added ÷ charging efficiency × electricity price. Find out what a charge really costs — at home on Level 1 or Level 2, or on a

Home › Vehicle & Transportation Calculators › Commute Cost Calculator Commute Cost CalculatorCost of Driving to Work — Per Day, Month & Year Yearly commute cost = (round-trip miles × work days × gas price ÷ MPG) + wear + parking + tolls. See what your drive to work really costs — gas, parking, tolls