Estimate your one-rep max from a set you have already done, then read your training weight at every percentage from the full chart below. Rounded to loads you can actually build with standard plates.
| % of 1RM | Weight | Typical Reps |
|---|---|---|
| 100% | 69 kg | 1 rep (your max) |
| 95% | 65.5 kg | 2 reps |
| 90% | 62 kg | 3-4 reps |
| 85% | 58.5 kg | 5-6 reps |
| 80% | 55 kg | 7-8 reps |
| 75% | 51.5 kg | 9-10 reps |
| 70% | 48 kg | 10-12 reps |
| 65% | 44.5 kg | 12-14 reps |
| 60% | 41.5 kg | 15+ reps |
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1RM.fit estimates your max from every working set you log, so the percentages you train at follow your actual strength instead of a number you wrote down two months ago.
Your one-rep max is the heaviest weight you can lift once with correct form. A percentage of it is simply that number multiplied by a decimal: 70 percent of a 140 kg squat is 98 kg. The arithmetic is trivial, which is why the useful part of this page is not the calculation but knowing which percentage to pick.
Training percentages exist because effort is not a reliable unit. Told to do a hard set of five, a lifter on a good day and the same lifter on four hours of sleep will load very different bars, and over a month that difference is the whole difference between progress and spinning. A percentage anchors the session to something measured rather than to how you happen to feel.
This is also why almost every serious strength program is written in percentages. 5/3/1, Sheiko, nSuns, Smolov and most block periodization templates tell you to work at 75 or 85 or 92.5 percent rather than telling you to go heavy, because the author cannot see your day and the percentage can.
Find your one-rep max in the left column of the lookup table and read across. If your max is not listed, multiply it by the percentage as a decimal: 107.5 kg at 85 percent is 107.5 × 0.85, which is 91.4 kg, so you would load 90 or 92.5.
Every figure in the table is rounded to the nearest 2.5 kg, which is a 1.25 kg plate on each side and the smallest jump most gyms stock. Programs that call for 83.7 kg are asking for a precision the equipment does not have, and rounding to the nearest loadable weight costs you nothing.
If you do not know your max, do not test it to use this page. Put a recent hard set into the calculator above and work from the estimate. A set of five at 100 kg estimates a max near 115 kg, which is accurate enough to program from and does not cost you a week of recovery.
This is the table most programs are built on. It maps each band of your one-rep max to the reps it supports and the job it does, so you can read a program that calls for 5 sets of 3 at 85 percent and know what it is asking of you.
| % of 1RM | Reps | Training goal | What it is actually for |
|---|---|---|---|
| 95 to 100% | 1 to 2 | Peaking and testing | Meet attempts and true max singles. Costly to recover from, so it belongs in the last weeks of a block, not every week. |
| 90 to 95% | 2 to 3 | Maximal strength | Heavy singles and doubles. Where you teach the nervous system to express force without much fatigue cost per rep. |
| 85 to 90% | 3 to 5 | Strength | The classic heavy triple and set of five. Most strength programs live here for their top sets. |
| 80 to 85% | 5 to 6 | Strength and size | Heavy enough to build strength, long enough under tension to add muscle. The most productive band for most intermediates. |
| 75 to 80% | 6 to 8 | Hypertrophy | The main volume band. Where the bulk of your weekly sets should sit if size is the goal. |
| 70 to 75% | 8 to 10 | Hypertrophy | High enough volume to drive growth, light enough to repeat across a week without wrecking recovery. |
| 65 to 70% | 10 to 12 | Hypertrophy and work capacity | Useful on accessories and second sessions, and for lifters rebuilding after time off. |
| 60 to 65% | 12 to 15 | Endurance and technique | Light enough to drill the movement while still accumulating real work. |
| 50 to 60% | Speed work | Speed and deloads | Moved fast for low reps, not taken near failure. This is what deload weeks and dynamic effort days are written at. |
Find your max on the left, read across for the weight at each percentage. Rows at every 50 kg are highlighted so the table is easier to scan on a phone between sets.
| 1RM (kg) | 50% | 60% | 65% | 70% | 75% | 80% | 85% | 90% | 95% |
|---|---|---|---|---|---|---|---|---|---|
| 40 | 20 | 25 | 25 | 27.5 | 30 | 32.5 | 35 | 35 | 37.5 |
| 45 | 22.5 | 27.5 | 30 | 32.5 | 35 | 35 | 37.5 | 40 | 42.5 |
| 50 | 25 | 30 | 32.5 | 35 | 37.5 | 40 | 42.5 | 45 | 47.5 |
| 55 | 27.5 | 32.5 | 35 | 37.5 | 42.5 | 45 | 47.5 | 50 | 52.5 |
| 60 | 30 | 35 | 40 | 42.5 | 45 | 47.5 | 50 | 55 | 57.5 |
| 65 | 32.5 | 40 | 42.5 | 45 | 50 | 52.5 | 55 | 57.5 | 62.5 |
| 70 | 35 | 42.5 | 45 | 50 | 52.5 | 55 | 60 | 62.5 | 67.5 |
| 75 | 37.5 | 45 | 50 | 52.5 | 57.5 | 60 | 65 | 67.5 | 72.5 |
| 80 | 40 | 47.5 | 52.5 | 55 | 60 | 65 | 67.5 | 72.5 | 75 |
| 85 | 42.5 | 50 | 55 | 60 | 65 | 67.5 | 72.5 | 77.5 | 80 |
| 90 | 45 | 55 | 57.5 | 62.5 | 67.5 | 72.5 | 77.5 | 80 | 85 |
| 95 | 47.5 | 57.5 | 62.5 | 67.5 | 72.5 | 75 | 80 | 85 | 90 |
| 100 | 50 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 |
| 105 | 52.5 | 62.5 | 67.5 | 72.5 | 80 | 85 | 90 | 95 | 100 |
| 110 | 55 | 65 | 72.5 | 77.5 | 82.5 | 87.5 | 92.5 | 100 | 105 |
| 115 | 57.5 | 70 | 75 | 80 | 87.5 | 92.5 | 97.5 | 102.5 | 110 |
| 120 | 60 | 72.5 | 77.5 | 85 | 90 | 95 | 102.5 | 107.5 | 115 |
| 125 | 62.5 | 75 | 82.5 | 87.5 | 95 | 100 | 107.5 | 112.5 | 120 |
| 130 | 65 | 77.5 | 85 | 90 | 97.5 | 105 | 110 | 117.5 | 122.5 |
| 135 | 67.5 | 80 | 87.5 | 95 | 102.5 | 107.5 | 115 | 122.5 | 127.5 |
| 140 | 70 | 85 | 90 | 97.5 | 105 | 112.5 | 120 | 125 | 132.5 |
| 145 | 72.5 | 87.5 | 95 | 102.5 | 110 | 115 | 122.5 | 130 | 137.5 |
| 150 | 75 | 90 | 97.5 | 105 | 112.5 | 120 | 127.5 | 135 | 142.5 |
| 155 | 77.5 | 92.5 | 100 | 107.5 | 117.5 | 125 | 132.5 | 140 | 147.5 |
| 160 | 80 | 95 | 105 | 112.5 | 120 | 127.5 | 135 | 145 | 152.5 |
| 165 | 82.5 | 100 | 107.5 | 115 | 125 | 132.5 | 140 | 147.5 | 157.5 |
| 170 | 85 | 102.5 | 110 | 120 | 127.5 | 135 | 145 | 152.5 | 162.5 |
| 175 | 87.5 | 105 | 115 | 122.5 | 132.5 | 140 | 150 | 157.5 | 167.5 |
| 180 | 90 | 107.5 | 117.5 | 125 | 135 | 145 | 152.5 | 162.5 | 170 |
| 185 | 92.5 | 110 | 120 | 130 | 140 | 147.5 | 157.5 | 167.5 | 175 |
| 190 | 95 | 115 | 122.5 | 132.5 | 142.5 | 152.5 | 162.5 | 170 | 180 |
| 195 | 97.5 | 117.5 | 127.5 | 137.5 | 147.5 | 155 | 165 | 175 | 185 |
| 200 | 100 | 120 | 130 | 140 | 150 | 160 | 170 | 180 | 190 |
| 210 | 105 | 125 | 137.5 | 147.5 | 157.5 | 167.5 | 177.5 | 190 | 200 |
| 220 | 110 | 132.5 | 142.5 | 155 | 165 | 175 | 187.5 | 197.5 | 210 |
| 230 | 115 | 137.5 | 150 | 160 | 172.5 | 185 | 195 | 207.5 | 217.5 |
| 240 | 120 | 145 | 155 | 167.5 | 180 | 192.5 | 205 | 215 | 227.5 |
| 250 | 125 | 150 | 162.5 | 175 | 187.5 | 200 | 212.5 | 225 | 237.5 |
| 260 | 130 | 155 | 170 | 182.5 | 195 | 207.5 | 220 | 235 | 247.5 |
| 270 | 135 | 162.5 | 175 | 190 | 202.5 | 215 | 230 | 242.5 | 257.5 |
| 280 | 140 | 167.5 | 182.5 | 195 | 210 | 225 | 237.5 | 252.5 | 265 |
| 290 | 145 | 175 | 187.5 | 202.5 | 217.5 | 232.5 | 247.5 | 260 | 275 |
| 300 | 150 | 180 | 195 | 210 | 225 | 240 | 255 | 270 | 285 |
The chart is only as good as the max you feed it. These calculators estimate your 1RM from a set you have already completed, so you never have to test a true single to get a number worth programming from.
Most hypertrophy work belongs between 65 and 80 percent of your one-rep max, which is roughly 6 to 12 reps per set taken close to failure. Growth is driven more by hard sets and total volume than by the exact load, so the band matters more than hitting a specific number.
Strength work sits between 80 and 95 percent, which is about 2 to 6 reps. Below 80 percent you are mostly training size and work capacity, and above 95 percent the fatigue cost per rep rises steeply, so that range is reserved for peaking rather than regular training.
Five or six is typical for a trained lifter, but it varies by lift and by person. Squats usually allow more reps at a given percentage than deadlifts, and lifters with more slow-twitch fibre tend to beat the chart at every load. Use the table as a starting point and adjust from what you actually record.
It is accurate enough to program from, and it is not a measurement. Every percentage chart rests on an estimated max, and the standard formulas drift once you go past about 10 reps. Treat the output as a sensible starting load for the week rather than as a precise statement about your body.
Every four to eight weeks while you are progressing, and whenever a prescribed percentage starts feeling obviously easy. You do not need to test a true single: put a recent hard set into the calculator and use the estimate. Logging your sets means the estimate updates on its own.
5/3/1 deliberately calculates every working percentage from 90 percent of your true max, called a training max. It builds in a buffer so that the prescribed weights stay achievable on bad days and the program keeps progressing instead of stalling the first time you are under-recovered.
Free for your site, with no ads and no signup. Coaches, gyms, and blogs can drop this calculator straight into a page, running the same Epley + Brzycki math as above. The snippet adds one visible line under the calculator, "Powered by 1RM.fit", linking back here. Leaving that credit in place is the only condition of use.
Log your sets in 1RM.fit and your estimated max updates itself, with training percentages ready for every lift. Free on iOS and Android.