Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Fuel Cost Per Kilometre Calculator

Works out how much fuel costs you for every kilometre driven, from the fuel price and your vehicle’s consumption in litres per 100 km. It turns abstract fuel-economy figures into a real per-kilometre cost.

Fuel Price ($/L)

Fuel Consumption (L/100km)

Automotive

Gear Ratio Calculator

Calculate the gear ratio between two meshing gears using their tooth counts. Useful for designing drivetrains, bicycles, RC vehicles, and any mechanical power-transmission system.

Input Gear Teeth (teeth)

Output Gear Teeth (teeth)

Key differences

	Fuel Cost Per Kilometre Calculator	Gear Ratio Calculator
Category	Automotive	Automotive
Inputs required	2	2
Result	Fuel Cost Per Kilometre ($/km)	Gear Ratio (:1)
What it does	Works out how much fuel costs you for every kilometre driven, from the fuel price and your vehicle’s consumption in litres per 100 km. It turns abstract fuel-economy figures into a real per-kilometre cost.	Calculate the gear ratio between two meshing gears using their tooth counts. Useful for designing drivetrains, bicycles, RC vehicles, and any mechanical power-transmission system.