Training Tools

1RM Calculator

Calculate your one-rep max and training percentages based on a submaximal lift.

Enter a weight you can lift for multiple reps (2-12 reps works best)

Weight Lifted

Reps Completed

Best accuracy with 1-10 reps

Calculate your 1RM to see percentages

Enter your lift to see percentages

Best accuracy: Use a weight you can lift for 1-10 reps with good form
For programming: Use 85-90% for strength work (3-5 reps), 70-80% for hypertrophy (8-12 reps)
Formula used: Brzycki formula, most accurate for rep ranges 1-10
Important: These are estimates. Actual 1RM may vary based on fatigue, technique, and individual factors