One Rep Max Calculator
Estimate your maximum strength for any lift
π Enter Your Lift Data
kg
reps
π Your Estimated 1RM
Estimated One Rep Max
0
kg
π Results by Formula
π Training Weight Reference
| % of 1RM | Weight | Typical Reps |
|---|
Note
These are estimates based on mathematical formulas. Your actual 1RM may vary based on factors like fatigue, form, and training experience. Always use a spotter when attempting maximal lifts.
About One Rep Max Calculator
Calculate your one-rep max (1RM) for strength training. Our free one rep max calculator uses your lifted weight and reps with formulas like Epley and Brzycki. No signup. Toolinho offers free fitness calculators.
Enter weight and reps above. Try our other free tools: BMI calculator, calorie calculator, and unit converter.