1RM Calculator
Free online 1rm calculator. One rep max estimation. Track your health in your browser.
Weight Lifted (kg)
Reps Performed (1-20)
Epley
116.7 kg
w × (1 + r/30)
Brzycki
112.5 kg
w × 36 / (37 - r)
Lombardi
117.5 kg
w × r^0.1
Average 1RM
115.5 kg
254.7 lbs
Strength Level
Advanced
Training Percentages
% 1RM
Weight (kg)
Weight (lbs)
Rep Range
65%
75.1
165.6
10–15
75%
86.7
191.0
6–10
85%
98.2
216.5
3–6
90%
104.0
229.3
2–4