5 reps → 1RM
453lb
average estimate
8 reps → 1RM
495lb
10 reps → 1RM
527lb
3 reps → 1RM
426lb
Show the math
Epley (5 reps) = 395 lb × (1 + 5 ÷ 30) = 461 lb
Brzycki (5 reps) = 395 lb × 36 ÷ (37 − 5) = 444 lb
If you lifted 395 lb for…
| Reps | Epley | Brzycki | Average 1RM |
|---|---|---|---|
| 1 rep | 395 | 395 | 395 |
| 2 reps | 421 | 406 | 414 |
| 3 reps | 435 | 418 | 426 |
| 4 reps | 448 | 431 | 439 |
| 5 reps | 461 | 444 | 453 |
| 6 reps | 474 | 459 | 466 |
| 7 reps | 487 | 474 | 481 |
| 8 reps | 500 | 490 | 495 |
| 9 reps | 514 | 508 | 511 |
| 10 reps | 527 | 527 | 527 |
| 11 reps | 540 | 547 | 543 |
| 12 reps | 553 | 569 | 561 |
If 395 lb is your one rep max
| % of 1RM | Load (lb) | About this many reps |
|---|---|---|
| 95% | 375 | 2 |
| 90% | 356 | 4 |
| 85% | 336 | 6 |
| 80% | 316 | 8 |
| 75% | 296 | 10 |
| 70% | 276 | 12 |
| 65% | 257 | 15 |
| 60% | 237 | 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 395 lb for 5 reps?
About 453 lb, averaging the Epley and Brzycki formulas.
What is my 1RM if I lift 395 lb for 10 reps?
About 527 lb. Estimates get less precise above 10 reps.