Department № 06

Auto.

Fuel, mileage, and trip planning.

7 tools in this department

Automotive calculators for owners, road-trippers, and small fleets: fuel cost, MPG and L/100 km, mileage between two odometer readings, and trip-planning math. Use them to compare vehicles at the pump, budget a long drive, or double-check what a lease or auto loan will actually cost per month before you sign.

01
Fuel Cost Calculator
Cost of fuel for a trip based on distance, efficiency, and price.
02
MPG / L/100km
Convert between miles-per-gallon and liters-per-100km.
03
Trip Time
How long a trip will take at a steady speed.
04
Tire Size Calculator
Overall diameter, sidewall height, circumference and revolutions per mile from a metric tire spec (e.g. 225/45R17).
05
Gear Ratio Calculator
Gear ratio from driven and drive tooth counts, output RPM, and torque multiplication.
06
Engine Displacement Calculator
Total engine displacement from bore, stroke, and cylinder count in cc, liters, and cubic inches.
07
RPM to Speed Calculator
Vehicle speed at a given engine RPM using transmission and final-drive ratios plus tire diameter.

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