What Is My One-Rep Max if I Lift 185 lb for 5 Reps?

185 lb for 5 reps, run through all seven published formulas — median 216 lb, and the 12 lb they disagree by shown rather than hidden.

Estimated one-rep max216lb

median of seven formulas — the full range is 208 to 220 lb

Lowest of the seven 208 lb
Highest of the seven 220 lb
Your set was 86% of max

The set you actually did
lb
Units

The formulas are ratios, so the unit only changes the label — 225 kg for 5 works exactly like 225 lb for 5.

Every one-rep-max formula applied to this set
FormulaEquationEstimate
Brzycki 208 lb
O'Conner 208 lb
Lander 210 lb
Wathan 216 lb
Epley 216 lb
Lombardi 217 lb
Mayhew 220 lb

Fitted on sets of 2 to 10 reps. Above 10 the estimates drift apart and none of them is dependable.

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Last checked

216 lb works out to 1x45 + 1x35 + 1x5 per side plus the bar — call it 215 lb in practice, since gyms rarely stock the odd change. 5 reps sits comfortably inside the 2-to-10 range these formulas were fitted on, so this estimate is about as reliable as the method gets. Your 185 lb set represents about 86% of the estimated max.

How far 216 lb can be trusted

Five reps is the most common way people estimate a max and the rep count these equations were checked against most often. The seven put your max between 208 and 220 lb. A set of five is short enough that breathing and pacing do not dominate it, so what the bar does on the fifth rep is a fair proxy for what it would do on a single — which is the assumption the whole method rests on.

Training loads from a 216 lb max

Programmes are written as percentages of the max, not as absolute weights. From 216 lb, rounded to the nearest 5 lb:

PercentageLoadTypical set
95%205 lbHeavy single
90%195 lbDoubles and triples
85%185 lbSets of four to five
80%175 lbSets of six
75%160 lbSets of eight
70%150 lbVolume work, ten or more

216 lb loads as 1x45 + 1x35 + 1x5 per side plus the bar, or 215 lb on the bar. Round every figure in that table to the nearest 5 lb and stop there — the seven formulas disagree by 12 lb on this set, so chasing a two-pound difference is chasing noise. If your gym stocks 2.5 lb pairs, save them for the top two rows, where a small miss costs the most reps.

The formulas behind this answer, and their limitations

The table above the fold is Epley (1985), Brzycki (1993), Lombardi (1989), O'Conner (1989), Wathan (1994), Lander (1985) and Mayhew (1992), each applied to 185 lb for 5 reps; the headline figure is their median. All seven assume a set taken close to failure with clean technique. At 5 reps you are still inside the fitted band, but conditioning is now affecting the result alongside strength, and the seven have begun to curve away from each other. They also under-rate strong, experienced lifters, who hold a higher percentage of max at any rep count than the regression average. The full account — the populations behind each equation, what a bounced rep does to it, and why we stop at ten reps — is set out on the methodology page. Warm up thoroughly and use safety bars or a spotter before going anywhere near 216 lb. This is a training estimate, not medical advice.

Common questions

185 lb for 5 reps is what one-rep max?

About 216 lb. The seven standard formulas range from 208 to 220 lb on these inputs, so the honest answer is “somewhere around 216”. In practice that is 1x45 + 1x35 + 1x5 per side plus the bar, or 215 lb loaded. Your 185 lb set is roughly 86% of that estimated max.

Why do the seven formulas disagree by 12 lb?

Each was fitted on a different group of lifters doing a different lift, so they curve differently as reps climb. At 5 reps that comes to 5.6%. Most calculators pick one of the seven silently; the spread is itself information about how much the number deserves to be trusted. All seven written out.

Should I try to lift 216 lb?

Not on the strength of an estimate from a 5-rep set, and not cold. From 5 reps the estimate carries a 12 lb spread, so build towards 208 lb first and let the bar tell you whether 216 lb is there. Make small jumps near the top, and set safety bars or use a spotter. If the point is to programme your training rather than to test, you do not need to attempt it at all — use the percentages above and adjust when your working sets start moving easily.