Health & Fitness / Lift the weight.
Strength Training
One-rep max (Epley / Brzycki / Lombardi), barbell plate-loading, RPE → %1RM, and warm-up set math that backs r/weightroom and r/Stronglifts progressions.
4 tools available
One-Rep Max Calculator (Epley / Brzycki / Lombardi)
Estimate your 1RM from a sub-maximal set.
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Barbell Plate Loading Calculator
See exactly which plates to load on each side of the bar.
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RPE to %1RM Calculator
Convert Rate of Perceived Exertion to %1RM.
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Warm-Up Set Calculator
Build a smart warm-up ramp to your working sets.
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