Enter the total lift (N) and the total span (m) into the Calculator. The calculator will evaluate the Lift Per Unit Span. 

Lift Per Unit Span Formula

LPUS = L / S


  • LPUS is the Lift Per Unit Span (N/m)
  • L is the total lift (N)
  • S is the total span (m)

To calculate Lift Per Unit Span, divide the lift force by the span length.

How to Calculate Lift Per Unit Span?

The following steps outline how to calculate the Lift Per Unit Span.

  1. First, determine the total lift (N). 
  2. Next, determine the total span (m). 
  3. Next, gather the formula from above = LPUS = L / S.
  4. Finally, calculate the Lift Per Unit Span.
  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.

total lift (N) = 500

total span (m) = 400