Calculate material specific strength or a component load-to-weight ratio, reverse-solve missing values, convert engineering units, and compare a benchmark.
Strength to Weight Ratio Formula
The following formula is used to calculate the Strength to Weight Ratio.
- Where SWR is the strength-to-weight ratio (unitless, e.g., kg/kg or lb/lb)
- S is the weight lifted (mass) (kg, g, or lb)
- W is the body weight (mass) (kg, g, or lb)
To calculate a strength-to-weight ratio, divide the weight lifted by body weight (use the same unit for both, or let the calculator convert).
How to Calculate Strength to Weight Ratio?
The following example problems outline how to calculate Strength to Weight Ratio.
Example Problem #1:
- First, determine the weight lifted (use any mass unit).
- The weight lifted is given as: 400 lb.
- Next, determine your body weight (use the same mass unit).
- Your body weight is provided as: 300 lb.
- Finally, calculate the Strength to Weight Ratio using the equation above:
SWR = S / W
The values given above are inserted into the equation below and the solution is calculated:
SWR = 400 / 300 = 1.33 (unitless, i.e., 1.33× bodyweight)
Example Problem #2:
For this problem, the variables required are provided below:
weight lifted = 300 lb
body weight = 100 lb
Test your knowledge using the equation and check your answer with the calculator above.
SWR = S / W = ?
