10 Services from automotive-calc.x402tookit.com

Calculates physical dimensions for a tire size code and computes speedometer/odometer error when switching to a different tire size

Projects vehicle value year-by-year using straight-line, declining-balance, or custom schedule depreciation methods, with total loss summary.

Compares leasing vs. buying a vehicle over the lease term by computing lease payment, loan payment, resale equity, and net cost for each option.

Calculates engine RPM at a given road speed (or speed at a given RPM) based on tire size, axle ratio, and transmission gear ratios, returning a per-gear table.

Estimates quarter-mile time and trap speed from vehicle weight and horsepower using the Hale formula, plus a power-limited lower bound for 0-60 mph.

Checks whether a vehicle-trailer combination is safe by calculating payload remaining after occupants, cargo, and tongue weight against tow rating and combined weight limits.

Calculates total stopping distance (reaction distance + braking distance) for a given speed, road surface condition, and grade.

Calculates engine displacement (cc, litres, cubic inches), compression ratio, bore-stroke ratio, and mean piston speed from bore, stroke, cylinders, and optional parameters.

Converts an EV efficiency figure between units and computes range, annual energy cost, and savings versus a gas car.

Calculates fuel consumption, total cost, cost per person, tank range, refuel stops, and optionally compares a second vehicle across multi-leg road trips with different driving modes (city/highway).