# Rowing split times and watts explained

Source: https://rowandspin.co.uk/blog/rowing-split-times-explained
Published: 2026-10-12
Publisher: Row and Spin

**In short:** A split is the time it would take to row 500 m at your current pace, shown as /500 m. Watts measure the same effort as power. Concept2's published formula links them: watts = 2.80 divided by pace cubed, with pace in seconds per metre. A 2:00 split works out at about 203 W.

The big number in the middle of most rowing monitors is not your speed in kilometres per hour. It is your split: the time it would take to cover 500 m if you kept going at that pace. Split, watts and stroke rate are the three numbers that tell you most about a session. This guide explains each one, shows how split and watts relate using Concept2's published formula and gives a table you can use as a quick reference.

## What a /500 m split means

Rowing measures pace as time per distance, not distance per time. A split of 2:10 /500 m means that at your current pace you would cover 500 m in two minutes and ten seconds. A lower split is faster. Going from 2:10 to 2:05 means you are moving quicker.

500 m is used because it is a quarter of the standard 2,000 m race distance. That makes maths simple: multiply the split by four to get your 2,000 m time at that pace. A steady 2:00 split gives an 8:00 2,000 m.

Most monitors show the split as an average for the last few strokes, so it moves around a little. Look at the average split for a whole piece for a steadier picture.

## How watts relate to split

Watts measure power: how much work you put into the flywheel per second. Concept2 publishes the formula its monitors use: watts = 2.80 / pace³, where pace is seconds per metre. To get pace from a split, convert the split to seconds and divide by 500.

Take a 2:00 split. That is 120 seconds, so pace is 120 / 500 = 0.24 seconds per metre. 0.24 cubed is 0.013824. 2.80 divided by 0.013824 is about 202.5, shown as 203 W.

The cube is the important part. Because watts rise with the cube of speed, small changes in split need big changes in power. Going from 2:00 to 1:50 takes about 30 per cent more watts, not 8 per cent. That is why fast splits get so much harder to hold. You can run your own numbers with our [split and watts converter](https://rowandspin.co.uk/tools/split-and-watts-converter).

[Open the split and watts converter](https://rowandspin.co.uk/tools/split-and-watts-converter)

## Split to watts conversion table

The table uses Concept2's formula, rounded to the nearest watt. Other brands' monitors may use their own calculations, so treat it as a Concept2 reference. Numbers from magnetic or water rowers will not always line up.

| Split /500 m | Watts (approx.) | 2,000 m time at this pace |
| --- | --- | --- |
| 1:45 | 302 | 7:00 |
| 1:50 | 263 | 7:20 |
| 1:55 | 230 | 7:40 |
| 2:00 | 203 | 8:00 |
| 2:05 | 179 | 8:20 |
| 2:10 | 159 | 8:40 |
| 2:15 | 142 | 9:00 |
| 2:20 | 128 | 9:20 |
| 2:30 | 104 | 10:00 |
| 2:40 | 85 | 10:40 |

Split, watts and 2,000 m time using watts = 2.80 / pace³

## Stroke rate and how it fits in

Stroke rate, shown as s/m or spm, is the number of strokes you take per minute. It tells you how often you pull, not how hard. The same split can come from a low rate with strong strokes or a high rate with lighter ones.

Watching split and rate together is useful. If your rate climbs but your split barely moves, you may be rushing the recovery rather than pushing harder with the legs. A steady session at a moderate rate is a common way to practise a smooth stroke. Our guide on [how to use a rowing machine](https://rowandspin.co.uk/blog/how-to-use-a-rowing-machine) covers the stroke sequence.

Some monitors, including the Concept2 PM5, also show a force curve: a graph of how force builds and falls during each drive. A smooth, rounded curve usually means the legs, body and arms are working in sequence. A dip or sharp spike can point to a gap in timing. Check your monitor's manual to find the display.

- Split: pace per 500 m. Lower is faster.
- Watts: power per stroke averaged over time. Higher means more work.
- Stroke rate: strokes per minute. Shows rhythm, not effort.
- Force curve: the shape of each drive, on monitors that show it.

## Damper, drag factor and your numbers

On an air rower the damper changes how each stroke feels, not the maths. The PM5 measures drag factor and uses it when it works out split and watts, so the same effort should give similar numbers at different settings. Our article on [Concept2 damper settings](https://rowandspin.co.uk/blog/concept2-damper-settings) explains why 10 is not the hardest workout.

On magnetic and water rowers, the console works out split and watts in its own way. Numbers are consistent on the same machine but may not match another brand. If comparable data matters to you, look at the monitor details when choosing; our [best smart rowing machine](https://rowandspin.co.uk/best/best-smart-rowing-machine) guide sets out console and app support.

[See smart rowers](https://rowandspin.co.uk/best/best-smart-rowing-machine)

## Frequently asked questions

**What is a good 500 m time on a rowing machine?** It depends on the person and the machine, so there is no single good figure. Use your own average split as a reference and compare it with your earlier sessions on the same rower.

**How many watts is a 2:00 split?** About 203 W using Concept2's formula. A 2:30 split is about 104 W and a 1:45 split is about 302 W.

**Why does my split jump around?** The monitor averages the last few strokes, so a single strong or weak stroke shifts it. Look at the average split for the whole piece for a steadier number.

**Can I compare splits between different rowers?** Only loosely. Concept2 monitors use a published formula, but other brands calculate in their own way. Compare splits on the same machine for the most useful picture.

## Buying guides on this topic

- https://rowandspin.co.uk/best/best-smart-rowing-machine
- https://rowandspin.co.uk/best/best-rowing-machine-uk

## Sources

- [Concept2 UK](https://www.concept2.co.uk/)