One Rep Max Calculator
Lifestyle ToolsEstimate 1RM and training loads
Quick Answer
One Rep Max Calculator: Estimate 1RM and training loads. One Rep Max Calculator uses standard everyday life formulas to compute accurate results instantly.
Set performed
kg
reps
1RM (Epley)116.7kg
1RM (Brzycki)112.5kg
Combined 1RM114.6kg
Strength load 85% (about 6 reps)9740kg
Hypertrophy load 70% (about 12 reps)8020kg
How it works
- 1Epley: 100 × (1 + 5/30) = 116.7 kg；Brzycki: 100 × 36/(37−5) = 112.5 kg
- 2Estimate from a 3-5 RM set after warming up; true max testing needs spotters and safety pins.
Use 1RM as a dosing tool, not a badge; novices should stay at 60-75 percent loads.
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How to Use
- Enter scenario values: fill real-life numbers into the One Rep Max Calculator (defaults work for a quick try).
- Instant results: everything computes live, no button needed.
- Read the advice: results come with practical tips, reference standards and pitfalls.
- Compare options: adjust parameters to compare choices side by side.
Key Points
- One Rep Max Calculator is a free online everyday life tool — open and use, no sign-up.
- All calculations run locally in your browser; your data never leaves the device.
- Key capability: Estimate 1RM and training loads.
- Results come with formulas and reference tables so you can verify every number.
Formula & How It Works
One Rep Max Calculator formula
One Rep Max Calculator uses standard everyday life formulas to compute accurate results instantly.
FAQ
How do I use the One Rep Max Calculator?
Open the page and fill in the input fields — results update automatically. Estimate 1RM and training loads.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.
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Source & Updates
Based on common formulas and industry conventions. Last updated: 2025-07
Last updated:
Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.
Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.
Cite this page: YiJianSuan. One Rep Max Calculator[EB/OL]. https://www.yijiansuan.com/en/c/life/one-rep-max
Results provided by this tool are for reference only and do not constitute professional advice.