5 reps → 1RM
235lb
average estimate
8 reps → 1RM
257lb
10 reps → 1RM
273lb
3 reps → 1RM
221lb
Show the math
Epley (5 reps) = 205 lb × (1 + 5 ÷ 30) = 239 lb
Brzycki (5 reps) = 205 lb × 36 ÷ (37 − 5) = 231 lb
If you lifted 205 lb for…
| Reps | Epley | Brzycki | Average 1RM |
|---|---|---|---|
| 1 rep | 205 | 205 | 205 |
| 2 reps | 219 | 211 | 215 |
| 3 reps | 226 | 217 | 221 |
| 4 reps | 232 | 224 | 228 |
| 5 reps | 239 | 231 | 235 |
| 6 reps | 246 | 238 | 242 |
| 7 reps | 253 | 246 | 249 |
| 8 reps | 260 | 254 | 257 |
| 9 reps | 266 | 264 | 265 |
| 10 reps | 273 | 273 | 273 |
| 11 reps | 280 | 284 | 282 |
| 12 reps | 287 | 295 | 291 |
If 205 lb is your one rep max
| % of 1RM | Load (lb) | About this many reps |
|---|---|---|
| 95% | 195 | 2 |
| 90% | 184 | 4 |
| 85% | 174 | 6 |
| 80% | 164 | 8 |
| 75% | 154 | 10 |
| 70% | 144 | 12 |
| 65% | 133 | 15 |
| 60% | 123 | 20 |
How to use it
- Enter your numbers. Switch between US and metric units at any time.
- Results update as you type, and the formula is shown so you can check it.
- Copy the link, save the plan on this device, or print it for your next appointment.
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These are estimates, not a diagnosis. A clinician can account for your health history and medicines.
Other weights
Common questions
What is my 1RM if I lift 205 lb for 5 reps?
About 235 lb, averaging the Epley and Brzycki formulas.
What is my 1RM if I lift 205 lb for 10 reps?
About 273 lb. Estimates get less precise above 10 reps.