1
If you didn't test a single-rep max, your 1RM is estimated using the Epley formula: 1RM = weight × (1 + reps ÷ 30). This works best for sets of 3–10 reps.
2
Your strength ratio is 1RM ÷ bodyweight. Ratio-based standards remove size from the equation so a 150-lb lifter can be compared to a 250-lb lifter on equal footing.
3
Your ratio is compared to sex-adjusted thresholds (females ×0.65) with an age deduction of 0.02 ratio points per year over 40. The closest percentile bracket (90th, 75th, 50th, 25th, 10th) is returned.