Pace and watts
Concept2 watts to calories per hour
At 250 watts a Concept2 monitor shows about 1160 calories per hour, and that power is a 500m split of 1:51.9. This chart converts each watts figure from 100 to 400, in 25-watt steps, to calories per hour and the 500m split.
Concept2 watts to calories per hour chart
| Watts | Calories per hour(exact) | 500m split(exact) |
|---|---|---|
| 100 | 644 | 2:31.8 |
| 125 | 730 | 2:20.9 |
| 150 | 816 | 2:12.6 |
| 175 | 902 | 2:06.0 |
| 200 | 988 | 2:00.5 |
| 225 | 1074 | 1:55.9 |
| 250 | 1160 | 1:51.9 |
| 275 | 1246 | 1:48.4 |
| 300 | 1332 | 1:45.3 |
| 325 | 1419 | 1:42.5 |
| 350 | 1505 | 1:40.0 |
| 375 | 1591 | 1:37.7 |
| 400 | 1677 | 1:35.6 |
- Treat calories as a guide to effort, not an exact burn. Compare sessions on watts or split.
- The monitor adds a fixed 300 calorie resting allowance, worked out for a 175 lb (79.5 kg) person.
Worked example
At 250 watts each watt adds 3.44 calories per hour, so the watts add 860 calories per hour. With the 300 resting allowance, the monitor shows 1160.
How it is worked out
The monitor's calories per hour are four times the watts, times 0.8604, plus a 300 calorie resting allowance. That allowance is worked out for a 79.5 kg person, so it is fixed and is not a measure of the rower. The 500m split comes from the same watts: split = 500 × cube root of (2.80 ÷ watts).
Sources
Use your own numbers in the converter
Related charts
MaxCals sets each session from the numbers you send back.
Workout 1 free. £29 once for your first block. Then from £24.99 a month.