Bench Press Max Calculator — Estimate Your 1RM
Enter your best bench press set (weight and reps) to estimate your true one rep max. Useful for programming and tracking strength progress.
How It Works
The Epley formula: 1RM = weight × (1 + reps/30). This is one of the most accurate 1RM estimation methods for reps in the 1–10 range.
Alternative formulas (Brzycki, Lombardi) give similar results but diverge at higher rep counts. Epley is the standard in powerlifting contexts.
Average male lifter: 135 lbs bench press 1RM. Novice: 95–135 lbs. Intermediate: 185–225 lbs. Advanced: 275+ lbs. These vary significantly by bodyweight.
Frequently Asked Questions
How accurate is a bench press max calculator?
Very accurate for reps 1–5. For reps 6–10, estimates are typically within 5–10 lbs of your true 1RM. Above 10 reps, accuracy drops significantly — the formula assumes fast-twitch muscle recruitment.
What's a good bench press max for a 180 lb male?
Intermediate: 185–225 lbs (1x–1.25x bodyweight). Advanced: 275–315 lbs (1.5x–1.75x). Elite: 365+ lbs (2x+). These are general benchmarks; your actual 1RM depends on training history and genetics.