1RM Brzycki
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The 1RM Brzycki formula is used to calculate the 1 Repetition Maximum (1RM) of an exercise in weightlifting, based on the weight lifted and the number of repetitions performed.
The formula itself is simple, but requires care to get accurate results. It is intended for use in strength training and weightlifting, where the goal is to maximize strength and power.
It's worth noting that the 1RM Brzycki is an estimate, not an exact measure of maximum strength. Additionally, the accuracy of the formula can be influenced by factors such as the exercise execution technique and the individual's level of physical conditioning.
Before using the 1RM Brzycki formula, it is recommended that the individual has a good understanding of their strength and power, and that the training has been adequate to achieve the desired goals.
Frequently asked questions
What is the 1RM Brzycki?
The 1RM Brzycki is a formula used to calculate the maximum weight that can be lifted in a weightlifting exercise, based on the weight lifted and the number of repetitions performed.
When to use the 1RM Brzycki formula?
The 1RM Brzycki formula is intended for use in strength training and weightlifting, where the goal is to maximize strength and power.
What influences the accuracy of the 1RM Brzycki formula?
The accuracy of the 1RM Brzycki formula can be influenced by factors such as the exercise execution technique and the individual's level of physical conditioning.
Is it safe to use the 1RM Brzycki formula?
Yes, the 1RM Brzycki formula is safe to use, as long as it is used correctly and with caution.
What to do if the 1RM Brzycki formula is not working correctly?
If the 1RM Brzycki formula is not working correctly, it is recommended to review the exercise execution technique and adjust the formula according to the individual's needs.