Enter the total lift force (N) and the total drag force (N) into the Lift to Drag Ratio Calculator. The calculator will evaluate and display the Lift to Drag Ratio.

## Lift to Drag Ratio Formula

The following formula is used to calculate the Lift to Drag Ratio.

LDR = L / D

• Where LDR is the Lift to Drag Ratio
• L is the total lift force (N)
• D is the total drag force (N)

## How to Calculate Lift to Drag Ratio?

The following example problems outline how to calculate Lift to Drag Ratio.

Example Problem #1:

1. First, determine the total lift force (N).
• The total lift force (N) is given as: 150.
2. Next, determine the total drag force (N).
• The total drag force (N) is provided as: 200.
3. Finally, calculate the Lift to Drag Ratio using the equation above:

LDR = L / D

The values given above are inserted into the equation below and the solution is calculated:

LDR = 150 / 200 = .75

Example Problem #2:

For this problem, the variables required are provided below:

total lift force (N) = 200

total drag force (N) = 30