Car & Vehicle
Auto Loan Calculator
Car loan payment calculator: monthly payment, total interest and amount financed after your down payment.
EMI = P·r·(1 + r)ⁿ / ((1 + r)ⁿ − 1)
Also called car loan calculator · car loan emi
Auto & Travel · 9 calculators
Car & Vehicle Calculators
Car loans, depreciation, running and ownership costs, cost per mile or km, road trips, tires and gear ratios.
Car & Vehicle
Car Depreciation Calculator
Estimate your car’s value after each year of ownership and the total depreciation cost per year and per mile.
Value = price × (1 − d₁)(1 − d)ⁿ⁻¹
Also called vehicle depreciation · car value calculator
Car & Vehicle
Car Running Cost Calculator
Total annual cost of running a car — fuel, insurance, tax, servicing, tyres and depreciation.
total = fuel + insurance + tax + servicin…
Also called cost of owning a car · annual car cost
Car & Vehicle
Cost Per Mile Calculator
True cost per mile including fuel, maintenance and depreciation, for expense claims or comparisons.
cost per mile = total annual cost ÷ annua…
Also called mileage rate calculator · true cost per mile
Car & Vehicle
Cost Per Km Calculator
Cost per kilometre of running a vehicle, in total and split into fuel and fixed costs.
cost per km = total annual cost ÷ annual …
Also called per kilometre cost · vehicle cost per km
Car & Vehicle
Road Trip Cost Calculator
Complete road trip budget — fuel, tolls, food and accommodation, split between travellers.
total = fuel + tolls + accommodation + fo…
Also called road trip budget · driving holiday cost
Car & Vehicle
Tire Size Calculator
Overall diameter, circumference and sidewall height from a tyre size code like 225/45R17.
diameter = rim × 25.4 + 2 × (width × aspe…
Also called tyre size calculator · tire diameter calculator
Car & Vehicle
Gear Ratio Calculator
Gear ratio from tooth counts or diameters, with output speed, torque and direction.
ratio = driven teeth ÷ driving teeth
Also called gearing calculator · gear teeth ratio
Car & Vehicle
Power to Weight Ratio Calculator
Power-to-weight ratio in hp/tonne and W/kg, with an estimated 0–100 km/h time.
ratio = power ÷ total weight
Also called hp per ton · w/kg calculator
Key car & vehicle formulas
| Auto Loan | EMI = P·r·(1 + r)ⁿ / ((1 + r)ⁿ − 1) |
|---|---|
| Car Depreciation | Value = price × (1 − d₁)(1 − d)ⁿ⁻¹ |
| Car Running Cost | total = fuel + insurance + tax + servicing + tyres + depreciation |
| Cost Per Mile | cost per mile = total annual cost ÷ annual mileage |
| Cost Per Km | cost per km = total annual cost ÷ annual distance |
| Road Trip Cost | total = fuel + tolls + accommodation + food |
| Tire Size | diameter = rim × 25.4 + 2 × (width × aspect ÷ 100) |
| Gear Ratio | ratio = driven teeth ÷ driving teeth |
| Power to Weight Ratio | ratio = power ÷ total weight |
Car & Vehicle questions
How is the monthly payment calculated?
With the standard amortization (EMI) formula M = P·r·(1 + r)ⁿ / ((1 + r)ⁿ − 1), where P is the loan amount, r the monthly interest rate (annual rate ÷ 12) and n the number of monthly payments.
What does 225/45R17 mean?
225 mm wide, sidewall 45% of that width (101 mm), radial construction, fitting a 17 inch rim.
Does a higher gear ratio mean more speed?
No — a higher numeric ratio means more torque and lower output speed. Overdrive ratios are below 1.