Strength
Rep Max Chart
Updated 1 Nov 2026 · Source: Epley, Brzycki and Lombardi formulas ↗
Enter your one rep max to see the heaviest weight you can probably lift for each rep count from 1 to 15, then use it to set loads for your next workout.
Worked example
- Epley turned around: 225 ÷ (1 + 5 ÷ 30) = 192.9
- Brzycki turned around: 225 × (37 − 5) ÷ 36 = 200.0
- 5 rep max = average of the two = 196.4 lb
Rep maxes as a share of your one rep max
| Reps | % of 1RM | If max = 135 lb | If max = 225 lb | If max = 315 lb |
|---|---|---|---|---|
| 1 | 100.0% | 135 | 225 | 315 |
| 2 | 95.5% | 129 | 215 | 301 |
| 3 | 92.7% | 125 | 209 | 292 |
| 4 | 90.0% | 121 | 202 | 283 |
| 5 | 87.3% | 118 | 196 | 275 |
| 6 | 84.7% | 114 | 191 | 267 |
| 7 | 82.2% | 111 | 185 | 259 |
| 8 | 79.8% | 108 | 179 | 251 |
| 9 | 77.4% | 104 | 174 | 244 |
| 10 | 75.0% | 101 | 169 | 236 |
| 11 | 72.7% | 98 | 164 | 229 |
| 12 | 70.4% | 95 | 158 | 222 |
| 13 | 68.2% | 92 | 153 | 215 |
| 14 | 66.0% | 89 | 149 | 208 |
| 15 | 63.9% | 86 | 144 | 201 |
Reading the chart
Each row answers one question: if your max is this, what weight can you lift for exactly this many reps before failing? For a 225 lb max, the chart gives about 196 lb for 5 reps, 179 lb for 8 reps and 169 lb for 10.
The percent column works for any max. Ten reps sits at 75.0% of the max and five reps at 87.3%, so you can apply the chart to a lift that is not in the sample columns.
From a rep target to a working weight
The chart shows rep maxes, which means the last rep is a fight. Most training sets stop a rep or two short of that. To keep 2 reps in reserve on a set of 5, read the 7 rep row instead of the 5 rep row.
Then round down to a weight you can load, in 5 lb or 2.5 kg steps. The RPE calculator does this math for you if you rate sets by effort.
Matching the chart to your goal
Published training guidelines describe loads as a share of the max. For muscle size in newer lifters they list about 70 to 85% for 8 to 12 reps, and for advanced strength work loads of 80 to 100%. On this chart, that first range runs from about the 6 rep row down to the 12 rep row.
Endurance work at 40 to 60% for more than 15 reps sits below the chart. For set and rep schemes by goal, see how many sets and reps.
Where the chart is least reliable
We build each row by turning the Epley and Brzycki formulas around and averaging them. Those formulas agree closely up to about 10 reps and then start to spread, so the rows past 10 are rougher guesses.
People also differ. Lifters who train with high reps may beat the chart at 12 to 15, while lifters who mostly train singles may fall short. The chart is also less exact for exercises other than the main barbell lifts.
Test the chart against yourself
The next time you do a hard set, compare your reps with the chart. If you keep getting two more reps than it predicts at a given weight, your true max is probably higher than the number you entered. Get a fresh estimate from the one rep max calculator.
Related pages
One Rep Max Formula, One Rep Max Calculator, How Many Sets and Reps, Deadlift Max Calculator
Questions
What percentage of my max is a 10 rep max?
On our chart, 10 reps works out to 75% of the one rep max. Real results vary from person to person and from lift to lift.
Do I need to test a true max to use this chart?
No. You can enter an estimated max from a recent hard set of 3 to 8 reps.
Why does the chart stop at 15 reps?
Past about 10 to 12 reps the formulas disagree more and more, so longer sets would add rows that are mostly guesswork.
How we calculate: every formula, with its author and year, is on our method page; data sources and their licenses are on sources.
gymnical.com gives estimates from published formulas and public data. It is not medical advice and not a training prescription. Last reviewed November 2026.