Automotive

12 calculators: fuel cost, mileage (km/L ↔ MPG ↔ L/100km), multi-leg trip cost, horsepower (from torque + RPM), engine displacement (bore × stroke × cylinders), tire size (205/55R16 → diameter), average speed, travel time, lap time / race pace, India toll estimator (FASTag), EV charging cost, and EV-vs-petrol annual cost.

Both, in real-time. Enter distance and fuel used — get km/L, MPG (US), and L/100km simultaneously. India quotes km/L; US uses MPG; Europe uses L/100km.

205 = section width in mm. 55 = aspect ratio (sidewall = 55% of width). R = radial construction. 16 = rim diameter in inches. The Tire Size calculator computes overall tire diameter, circumference, and revolutions per km.

Inputs are your annual km, petrol mileage, current fuel price, EV range per full charge, and electricity rate. Output is annual savings. Excludes resale value, battery degradation, and service costs — for those, talk to a dealer.

Approximate ₹/km × distance × vehicle class multiplier. Actual tolls vary by stretch (FASTag rates published on NHAI). For exact tolls, use the official NHAI route planner.

HP = torque (Nm) × RPM / 9549 × 1.341. The calculator outputs both kW and HP. Real-world peak HP depends on the dyno method and altitude — manufacturer specs are SAE-Net or DIN-rated for consistency.