Tools

Split, watts and calories converter

For the Concept2 Rower and SkiErg. Type any one number and the other two fill in. The maths is the same the monitor uses, so the results match what your PM5 shows.

500 m splitm:ss.t, or secondsWattsCalories per hour

Enter a split, watts or calories per hour to convert.

Reference table

Concept2 Rower and SkiErg, 500 m split to watts and monitor calories per hour
500 m split	Watts	Calories per hour
1:30.0	480	1950
1:35.0	408	1703
1:40.0	350	1503
1:45.0	302	1339
1:50.0	263	1204
1:55.0	230	1091
2:00.0	203	996
2:05.0	179	916
2:10.0	159	847
2:15.0	142	789
2:20.0	128	738
2:25.0	115	695
2:30.0	104	656
2:35.0	94	623
2:40.0	85	594

How it works

Power rises with the cube of speed: watts = 2.80 / pace³, where pace is seconds per metre (Concept2). Going 10% faster takes about 33% more power, which is why the last few seconds off a split are the hardest.

Calories per hour = (4 × watts ÷ 1.1639) + 300 (Concept2). The monitor assumes an 80 kg athlete, so treat calories as a guide to effort, not an exact burn. Compare sessions on watts or split.

The BikeErg shows a 1000 m split and air bikes use their makers' own calorie formulas, so this converter doesn't cover them.

MaxCals turns these numbers into your next session. Send a result after each workout and the next one adapts.

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