Enter your lift weight, number of reps, and choose your Olympic lift type (Clean & Jerk or Snatch) to estimate your 1 Rep Max (1RM). Select your preferred unit (kg or lb) and get back your estimated 1RM alongside a full rep percentage breakdown showing what weight corresponds to each rep range.
Estimated 1RM
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90% of 1RM (2–3 reps)
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85% of 1RM (3–4 reps)
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80% of 1RM (4–5 reps)
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70% of 1RM (6–8 reps)
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Formula Applied
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Your 1 Rep Max (1RM) is the maximum weight you can lift for a single repetition with good technique. For Olympic lifts like the Clean & Jerk and Snatch, your 1RM is a key benchmark used to structure training intensity and track progress over time.
This calculator uses the Epley formula (1RM = Weight × (1 + Reps / 30)) as its primary method, which is widely trusted for strength and power sports. For Olympic lifts performed at low rep ranges (1–5), this formula is particularly reliable.
The calculator provides a solid estimate, but results are most accurate when using 1–5 rep sets close to maximum effort. Olympic lifts are highly technical, so fatigue, technique breakdown, and daily readiness can all affect your actual 1RM. Always treat the result as a guideline rather than a guaranteed maximum.
No. Your 1RM is lift-specific. Most athletes can Clean & Jerk significantly more than they can Snatch — typically around 20–25% more — because the Snatch requires a much deeper and more demanding overhead position. Always calculate each lift separately.
For Olympic lifting, common programming zones are: 90–100% for maximal strength and competition prep (1–2 reps), 80–89% for heavy technique work (2–4 reps), and 70–79% for volume and skill development (4–6 reps). The rep breakdown table in this calculator shows your exact target weights for each zone.
For Olympic lifts, use a set of 1–5 reps performed near maximum effort. Sets of more than 5 reps introduce greater fatigue variability and reduce estimate accuracy. A 2–3 rep set at a heavy but controlled weight typically gives the best results for the Snatch and Clean & Jerk.
Yes. Select your preferred unit (kg or lb) before entering your lift weight and the calculator will display all results in that unit. To convert manually: 1 kg = 2.2046 lb and 1 lb = 0.4536 kg.
Only attempt your true 1RM with proper coaching, an experienced spotter or safety setup, and after an adequate warm-up. For most athletes, training at 90–95% of estimated 1RM carries the technical benefits of near-maximal work with lower injury risk than a true max attempt.