One-rep max estimate
Fitness & body
One-rep max estimate
Estimate the most weight you could lift once
Example values are filled in. Replace them with your own.
Example calculation
Estimated 1RM: 70 kg.
Estimated 1RM
70 kg
An estimate of a one-repetition maximum, not a suggestion to attempt that load.
Body-related results are formula-based estimates, not a diagnosis or a personalized prescription.
See formula and assumptions
Estimate = weight × (1 + reps/30). One repetition returns the actual weight. Not a load recommendation.
- Lifted weight (kg)
- Example: 60. Enter the number only.
- Repetitions
- Example: 5. Enter the number only.