OhMyCalc

One Rep Max Calculator

Calculate your one-repetition maximum (1RM) using Brzycki and Epley formulas. Get training weight percentages.

How to Use the One Rep Max Calculator

  1. Enter your personal measurements (weight, height, age, etc.).
  2. Select any relevant options such as gender or activity level.
  3. Click Calculate or view the instant result.
  4. Review your result and the interpretation or category it falls into.

Riferimento Rapido

DaA
Height (adult M)170–180 cm
Height (adult F)160–170 cm
Weight (adult M)65–85 kg
Weight (adult F)55–70 kg
Resting heart rate60–100 bpm
Normal BP120/80 mmHg

Casi d'Uso

Formula

Brzycki: 1RM = weight / (1.0278 − 0.0278 × reps). Epley: 1RM = weight × (1 + reps/30).

Domande Frequenti

How to use?
Enter the data and click the calculate button.
Calculation accuracy?
Calculations are performed with high precision.
Is it free?
Yes, all calculators are completely free.