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Precisd Health
12 tools · by Precisd
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Precisd · Sector
HEALTH
12 tools available
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🏋️ 1RM Calculator
Estimate your one-rep max for 6 major lifts
How this tool works
What it does: Estimate your one-rep max for 6 major lifts
How to use it
Enter your numbers in the labeled fields, then use the primary action (for example Calculate or Run).
Inputs
Each label states the unit or meaning (years, %, currency, and so on). Fields may open with sample numbers so you can see a worked example.
Outputs
Results appear in the highlighted panel below the inputs after you run the tool.
What you get
You get an immediate estimate or projection based on the math shown—use it as a planning aid, not as professional tax, legal, or medical advice unless you verify with a qualified professional.
⚠️ This tool is for informational purposes only and does not constitute medical advice. Consult a registered healthcare professional in your country.
Estimated 1RM — Bench Press
116.7 kg
100% · ~1 rep
116.7kg
95% · ~2 reps
110.8kg
90% · ~3 reps
105.0kg
85% · ~5 reps
99.2kg
80% · ~6 reps
93.3kg
75% · ~8 reps
87.5kg
70% · ~10 reps
81.7kg
65% · ~12 reps
75.8kg
60% · ~15 reps
70.0kg
Uses the Epley formula. Actual 1RM varies — always warm up and use a spotter.
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