Aviation Fuel Weight Calculator

Fuel Weight & Volume Calculator

Convert between fuel weight and volume for common aircraft fuel types

Fuel Type

Fuel Temperature (°C)

Standard: 15°C (59°F)

Actual Density

lbs/US gal

kg/L

Conversion Mode

Volume → Weight

Weight → Volume

Volume Input

Volume Conversions

Liters0

US Gallons0

Imperial Gallons0

Weight Results (Imperial)

Pounds (lb)0

Weight Results (Metric)

Kilograms (kg)0

Metric Tons0

Temperature Effects on Fuel Density

Aviation fuels expand when warmed and contract when cooled. Mass remains constant, but volume changes. The calculator automatically applies temperature correction using a thermal expansion coefficient of 0.095% per °C.

Important Notes

All reference densities are standardized at 15°C (59°F)
For accurate weight calculations, always use the actual fuel temperature
Manual density override assumes the entered value is already at the specified temperature
Temperature differences of ±20°C can result in ~2% density variation

Technical Details & Formulas

Unit Conversions:

• 1 US gal = 3.785411784 L

• 1 Imperial gal = 4.54609 L

• 1 lb = 0.45359237 kg

Temperature Correction:

• D(T) = D(15°C) / (1 + α × (T - 15))

• Where α = 0.00095 per °C (thermal expansion coefficient)

• T = actual fuel temperature in °C

Weight Calculations:

• Weight (lb) = Volume (US gal) × Density (lbs/US gal)

• Weight (kg) = Volume (L) × Density (kg/L)

Volume from Weight:

• Volume (US gal) = Weight (lb) / Density (lbs/US gal)

• Volume (L) = Weight (kg) / Density (kg/L)

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