Enter the barbell weight into the Calculator. The calculator will evaluate the equivalent Dumbbell Weight. 

Dumbbell Weight Formula

DBW = BBW - BBW *.20


  • DBW is the Dumbbell Weight (lbs)
  • BBW (lbs) is the barbell weight

To calculate Dumbbell Weight, multiply the barbell weight by .20, then then subtract this result from the barbell weight.

How to Calculate Dumbbell Weight?

The following steps outline how to calculate the Dumbbell Weight.

  • First, determine the barbell weight. 
  • Next, gather the formula from above = DBW = BBW + BBW *.20.
  • Finally, calculate the Dumbbell Weight.
  • 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.

barbell weight = 125