Part of the data ring
WHITELIGHTS

Real judged lifts. Zero self-reported numbers. This is what strong actually is.

One-rep max

275 lb for 4 reps

Estimated one-rep max: about 310 lb (141 kg). The five formulas span 300–320 lb, so treat it as a range rather than a number.

Estimated one-rep max

141 kg

Mean of five published formulas. Range 136145 kg.

Formula1RMSource
Epley141.4Epley, 1985
Brzycki136.1Brzycki, 1993
Lombardi143.3Lombardi, 1989
O'Conner137.2O'Conner et al., 1989
Mayhew145.3Mayhew et al., 1992

SOURCE·Published formulae — Epley, Brzycki, Lombardi; IPF GL and DOTS coefficients·REVIEWED JUL 2026

So is 310 lb a good bench press?

If that lift is a bench press, 310 lb (141 kg) puts a man at 82.5–87.5 kg bodyweight at the 71st percentile of 29,914 judged competition benches — advanced. For a squat or a deadlift the same weight ranks lower, because those lifts are heavier for everyone.

SOURCE·Judged competition results (OpenPowerlifting)·29,914 judged bench presses, men 82.5–87.5 kg·REVIEWED JUL 2026

Percentages of that max

% of 1RMWeight
95%133.6
90%126.6
85%119.6
80%112.5
75%105.5
70%98.5
65%91.4
60%84.4
55%77.4
50%70.3

A sensible warm-up to it

StepWeightReps
40%56.35
55%77.45
70%98.53
80%112.52
90%126.61
Working140.71

A conventional ramp, not the ramp. Add or remove steps to taste — the point is to arrive warm and not tired.

Same weight, other rep counts

The whole rep range for 275 lb, so the estimate for any set you actually did is one click away.

SOURCE·Published formulae — Epley, Brzycki, Lombardi; IPF GL and DOTS coefficients·REVIEWED JUL 2026

275 lb × 4 — common questions

What is my one-rep max if I lift 275 lb for 4 reps?

About 310 lb (141 kg), taken as the mean of the Epley, Brzycki, Lombardi, O'Conner and Mayhew formulas. Individually they give 300 to 320 lb, so the range is the honest answer.

Is 310 lb a good bench press?

If the lift is a bench press, 310 lb (141 kg) puts a man at 82.5–87.5 kg bodyweight at the 71st percentile of 29,914 judged competition benches — advanced. That population all competed, so it is stronger than a gym average.

What should I warm up with?

The ramp below runs 124 lb × 5, 171 lb × 5, 217 lb × 3, 248 lb × 2, 279 lb × 1, then the working single at 310 lb. It is a conventional ladder rather than a rule; the test is that the last warm-up still moves fast.

See all 10 sites in this family, with what each one answers

Published by

Amit Sharma

Auckland real-estate agent and marketer. Builds free, sourced data tools.