1RM calculator
Weight and reps from one set — and I'll work out your estimated one-rep max (e1RM) with the same formula the diary uses.
Estimated max
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Percentages of your max
| % | Weight |
|---|
How I count
By default it's the Epley formula: weight × (1 + reps ÷ 30). Brzycki is weight × 36 ÷ (37 − reps); it runs high on long sets, so past 10 reps I switch to Epley — at 10 reps the two give the same number.
RPE says how many reps you had left: @9 is one, @8 is two. The formula gets the reps to failure, but I cap the reserve at five. Sets longer than 12 reps don't count: the formulas are fitted to low reps.
In the diary you pick the formula in 🔧 Settings — I use it for your records and charts.
Log your sets in the bot — I'll count your estimated max, tonnage and records myself.
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