Dumbbell bench press one rep max calculator
Work out an estimated maximum for the dumbbell bench press without testing one. The percentage table below converts that estimate into training loads.
Enter your set
Result
These are estimates from population-level equations, not a measurement of you and not medical advice. Individual results vary widely. Talk to a doctor or a registered dietitian before making significant changes to how you eat or train.
The dumbbell bench press specifically
The dumbbell bench press allows a longer range of motion and demands stabilisation from each side independently.
How well these equations work depends on the lift. estimates read high. Stabilisation demand rises with fatigue, so the set often ends because the dumbbells become unmanageable rather than because the chest failed.
- Getting heavy dumbbells into position is itself limiting, and it caps what can be tested safely alone.
- Loads are usually quoted per dumbbell. Doubling for a total is a common source of confusion when comparing to a barbell.
- Most lifters handle a combined dumbbell load below their barbell bench, largely because of the stabilisation cost.
- Typical reps
- 6 to 12
- Category
- Pressing
Estimated dumbbell bench press max by weight and reps
Epley estimates in kilograms. Read across from the weight you lifted and down from the repetitions you managed. Columns beyond ten repetitions are shown but are the least reliable.
| Weight | 1 reps | 2 reps | 3 reps | 5 reps | 8 reps | 10 reps | 12 reps |
|---|---|---|---|---|---|---|---|
| 40 kg | 41.3 | 42.7 | 44 | 46.7 | 50.7 | 53.3 | 56 |
| 60 kg | 62 | 64 | 66 | 70 | 76 | 80 | 84 |
| 80 kg | 82.7 | 85.3 | 88 | 93.3 | 101.3 | 106.7 | 112 |
| 100 kg | 103.3 | 106.7 | 110 | 116.7 | 126.7 | 133.3 | 140 |
| 120 kg | 124 | 128 | 132 | 140 | 152 | 160 | 168 |
| 140 kg | 144.7 | 149.3 | 154 | 163.3 | 177.3 | 186.7 | 196 |
| 160 kg | 165.3 | 170.7 | 176 | 186.7 | 202.7 | 213.3 | 224 |
Percentage table
Training loads as a share of a 100 kg maximum, with the repetitions each percentage typically allows. Scale proportionally to your own estimate.
| Percentage | Load from 100 kg | Approximate reps |
|---|---|---|
| 50% | 50 kg | 30 |
| 55% | 55 kg | 25 |
| 60% | 60 kg | 20 |
| 65% | 65 kg | 16 |
| 70% | 70 kg | 13 |
| 75% | 75 kg | 10 |
| 80% | 80 kg | 8 |
| 85% | 85 kg | 5 |
| 90% | 90 kg | 3 |
| 95% | 95 kg | 2 |
Rep-max conversion
What a 100 kg estimated maximum corresponds to at each repetition count, and how the five equations compare for a 100 kg set of five.
| Repetitions | Load for a 100 kg max |
|---|---|
| 1 | 96.8 kg |
| 2 | 93.8 kg |
| 3 | 90.9 kg |
| 5 | 85.7 kg |
| 8 | 78.9 kg |
| 10 | 75 kg |
| 12 | 71.4 kg |
| Formula | 100 kg × 5 reps |
|---|---|
| epley | 116.7 kg |
| brzycki | 112.5 kg |
| lombardi | 117.5 kg |
| oconner | 112.5 kg |
| wathan | 116.6 kg |
Questions
- How do I estimate my dumbbell bench press max?
- Take a set to or near failure, enter the weight and the repetitions, and the equations do the rest. A heavy triple gives a far more reliable estimate than a set of twelve, because all five equations were validated in the two to ten repetition range.
- Are 1RM estimates accurate for the dumbbell bench press?
- Estimates read high. Stabilisation demand rises with fatigue, so the set often ends because the dumbbells become unmanageable rather than because the chest failed.
- Which formula should I use?
- Wathan and Epley track measured data across the widest range; Brzycki is the most conservative and is exact at a single repetition. The average of all five is a more defensible single number than any one of them, and the spread between them tells you how much confidence the estimate deserves.
- What repetition range suits the dumbbell bench press?
- This lift is usually trained in the 6 to 12 repetition range. Estimates taken from within that range are the most trustworthy, because they sit closest to where the equations were fitted.
- Should I test a true maximum instead?
- Only if you need the number for competition, and then with a spotter and a full warm-up. For programming, an estimate from a heavy triple is nearly as useful and costs far less recovery and risk.