Enter the maximum traffic load and the dry operating mass into the calculator to determine the zero fuel weight.

Zero Fuel Weight Formula

The following equation is used to calculate the Zero Fuel Weight.

  • Where ZFW is the zero fuel weight (lbs,kg)
  • MTL is the maximum traffic load (lbs,kg)
  • DOM is the dry operating mass (lbs,kg)

To calculate zero fuel weight, add together the maximum traffic load by he dry operating mass.

What is a Zero Fuel Weight?


Zero fuel weight is the maximum mass of an airplane that has no useable fuel in its fuel tanks.

How to Calculate Zero Fuel Weight?

Example Problem:

The following example outlines the steps and information needed to calculate Zero Fuel Weight.

First, determine the maximum traffic load. With the help of the calculator linked above, the maximum traffic load is determined to be 100,000 kg.

Next, determine the dry operating mass of the airplane. In this scenario the dry operating mass is found to be 125,000 kg.

Finally, calculate the zero fuel weight using the formula and information above:


ZFW = 100,000 + 125,000

ZFW = 225,000 lbs