Enter the volume of the tank and the density of the fuel into the calculator to determine the fuel tank capacity. This calculator can also evaluate any of the variables given the others are known.

Fuel Tank Capacity Formula

The following formula is used to calculate the fuel tank capacity.

FTC = V * D


  • FTC is the fuel tank capacity (liters)
  • V is the volume of the tank (cubic meters)
  • D is the density of the fuel (liters per cubic meter)

To calculate the fuel tank capacity, multiply the volume of the tank by the density of the fuel. The result will be the fuel tank capacity in liters.

What is a Fuel Tank Capacity?

Fuel tank capacity refers to the maximum amount of fuel that a vehicle’s fuel tank can hold. It is usually measured in liters or gallons. This capacity is an important factor for drivers to consider as it determines how far a vehicle can travel before needing to refuel. The fuel tank capacity can vary greatly depending on the size and type of the vehicle.

How to Calculate Fuel Tank Capacity?

The following steps outline how to calculate the Fuel Tank Capacity.

  1. First, determine the volume of the tank (V) in cubic meters.
  2. Next, determine the density of the fuel (D) in liters per cubic meter.
  3. Next, gather the formula from above = FTC = V * D.
  4. Finally, calculate the Fuel Tank Capacity (FTC).
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

volume of the tank (V) = 5 cubic meters

density of the fuel (D) = 0.8 liters per cubic meter