1RM calculator
Estimate your strongest single rep. Make the math simpler. Keep the work yours.
Your inputs
⌁ Calculated here. Not saved or sent.
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ⓘ Use manageable loads and suitable equipment. A calculated number is not a reason to attempt an unsafe lift.
The Epley estimate+
Estimated 1RM = load × (1 + repetitions / 30)For a single repetition, this tool uses the entered load directly instead of adding the formula’s extra 3.3%. It accepts 1–30 whole repetitions. More reps and sets far from failure can make the estimate less reliable.
The percentage table is arithmetic, not a workout prescription. No estimate guarantees you can safely lift the displayed weight. A calculated 1RM is separate from Monte Wo’s MONTE WO Strength Index™.
MORE THAN NUMBERS
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