One Rep Max (1RM) calculator

Enter how many reps you can do with some weight

This would be your weight for 1RM

=?

Other Rep Maxes

1RM Percentages

  • 2RM: 96%
  • 3RM: 92%
  • 4RM: 89%
  • 5RM: 87%
  • 6RM: 84%
  • 7RM: 81%
  • 8RM: 79%
  • 9RM: 76%
  • 10RM: 73%
  • 11RM: 71%
  • 12RM: 68%

Convert TM percentages into RM percentages

Enter what percentage of RM your TM is

  • 100% TM = 90.0% 1RM
  • 97.5% TM = 88.0% 1RM
  • 95% TM = 85.5% 1RM
  • 92.5% TM = 83.5% 1RM
  • 90% TM = 81.0% 1RM
  • 87.5% TM = 79.0% 1RM
  • 85% TM = 76.5% 1RM
  • 82.5% TM = 74.5% 1RM
  • 80% TM = 72.0% 1RM
  • 77.5% TM = 70.0% 1RM
  • 75% TM = 67.5% 1RM
  • 72.5% TM = 65.5% 1RM
  • 70% TM = 63.0% 1RM
  • 67.5% TM = 61.0% 1RM
  • 65% TM = 58.5% 1RM
  • 62.5% TM = 56.5% 1RM
  • 60% TM = 54.0% 1RM
  • 57.5% TM = 51.5% 1RM
  • 55% TM = 49.5% 1RM
  • 52.5% TM = 47.5% 1RM
  • 50% TM = 45.0% 1RM
  • 47.5% TM = 43.0% 1RM
  • 45% TM = 40.5% 1RM
  • 42.5% TM = 38.5% 1RM
  • 40% TM = 36.0% 1RM
  • 37.5% TM = 34.0% 1RM
  • 35% TM = 31.5% 1RM
  • 32.5% TM = 29.5% 1RM
  • 30% TM = 27.0% 1RM
  • 27.5% TM = 25.0% 1RM
  • 25% TM = 22.5% 1RM
  • 22.5% TM = 20.5% 1RM
  • 20% TM = 18.0% 1RM
  • 17.5% TM = 15.5% 1RM
  • 15% TM = 13.5% 1RM
  • 12.5% TM = 11.5% 1RM
  • 10% TM = 9.0% 1RM
  • 7.5% TM = 7.0% 1RM
  • 5% TM = 4.5% 1RM
  • 2.5% TM = 2.5% 1RM