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.

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## 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:

- First, determine the total lift force (N).
- The total lift force (N) is given as: 150.

- Next, determine the total drag force (N).
- The total drag force (N) is provided as: 200.

- 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

Test your knowledge using the equation and check your answer with the calculator above.

LDR = L / D** = ?**