UsefulFormula1400+ Useful Formulas for Everyday Life

Docs About FAQ Contact

Travel & Transportation

Fuel Efficiency \(Airline\)

RPK ÷ Fuel Used

© 2025 UsefulFormula

1400+ formulas across math, physics, chemistry, engineering, finance, health, and everyday life — free and easy to use.

↑ Back to top

Categories

Math Formulas Physics Formulas Chemistry Formulas Engineering Formulas Finance Formulas Health Formulas Everyday Life Formulas

Resources

Docs All Formulas

Help

FAQ — Useful formulas & calculators About Us Contact Terms Privacy