Skip to content
CalcWolf Fitness 1RM कैलकुलेटर
Fitness

Calculate Your One Rep Max

Estimate your 1RM for any lift from the weight and reps you can do. Epley, Brzycki, and Lombardi formulas.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

Formula

1RM = Weight × (1 + Reps/30)। 60 kg × 8 reps: 1RM ≈ 60 × 1.267 = 76 kg। Most accurate with 3-10 reps। Above 12: endurance skews estimate।

Training %

Strength: 85-95% 1RM, 1-5 reps। Hypertrophy: 65-80%, 6-12। Endurance: 50-65%, 15+। Indian gyms: Cult.fit, Gold Gym, local akharas all use these principles।

⚡ CalcWolf Insight

Strength standards for adult males (approximate 1RM relative to body weight): Bench Press — Beginner 0.5x, Intermediate 1.0x, Advanced 1.5x. Squat — Beginner 0.75x, Intermediate 1.5x, Advanced 2.0x. Deadlift — Beginner 1.0x, Intermediate 2.0x, Advanced 2.5x.

Frequently asked questions
How to calculate?
Weight × (1 + Reps/30)। 50 kg × 10: 50 × 1.33 = 67 kg 1RM।
Should I test 1RM?
Estimate with 3-5 reps is safer and accurate enough for most।
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
🐛 Report a Calculator Error
Found a bug or outdated data? Reports go directly to Kevin and are reviewed personally.