Free lifter tool · no login
What's your true max?
Punch in a set you actually hit and get your estimated 1RM — plus every working weight from 60% to 100%, so you always know what to load.
Estimated 1-rep max
0 lb
— from your set
Percentage of max
| % | Load | ≈ reps |
|---|
An estimate from the Epley & Brzycki formulas (averaged) — most accurate at 1–8 reps; higher reps drift. Use it to set training loads, not to test a true max alone. Loads round to the nearest 5 lb / 2.5 kg.
Spotter adapts every session to the lifts you log — free, forever.
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