Benchmarks
Comparisons the calculators run under the same conditions, such as six 1RM formulas on one set of lifts. Each is recomputed on every build and downloads as CSV, free to cite.
- 8 rows 2026 one-rep-max formula disagreement benchmark
How the six published 1RM formulas (Epley, Brzycki, Lombardi, Mayhew, Wathen, Lander) diverge across rep ranges from a fixed 100 kg lift, with the inter-formula spread per rep count.
See also: Reference data, All tools, Articles.