Enter the weight lifted for 10 reps (lbs) and the number of reps performed in the exercise into the Calculator. The calculator will evaluate the 1RM from Brzycki Equation.

## 1RM from Brzycki Equation Formula

1RM = w / [(1.0278)-(.0278*r)]

Variables:

- 1RM is the 1RM from Brzycki Equation (lbs)
- w is the weight lifted for 10 reps (lbs)
- r is the number of reps performed in the exercise

## How to Calculate 1RM from Brzycki Equation?

The following steps outline how to calculate the 1RM from Brzycki Equation.

- First, determine the weight lifted for 10 reps (lbs).
- Next, determine the number of reps performed in the exercise.
- Next, gather the formula from above = 1RM = w / [(1.0278)-(.0278*r)].
- Finally, calculate the 1RM from Brzycki Equation.
- 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.

weight lifted for 10 reps (lbs) = 300

number of reps performed in the exercise = 15