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Indoor Rowing Pace and Power Calculator

Compare rowing time, distance, split and watts using the stated Concept2 indoor-rower relationship.

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How this works

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One tab-separated row per scenario, exactly four columns. Fill in exactly one of the time, the split or the average watts, and leave the other two empty. Times are mm:ss, h:mm:ss or a plain number of seconds, and tenths such as 6:45.5 are allowed. The split is the time for 500 m and the watts are average watts on a rowing machine, so a scenario works in either direction. Up to 200 rows and 100,000 characters. The tool uses the Concept2 indoor rower (RowErg) relationship and does not apply to the BikeErg.

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Open a JSON project saved by this page. The file names the tool and schema it was written for; values in the file replace the matching fields above and are checked the same way as typed input.

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    How to use Indoor Rowing Pace and Power Calculator

    1. Enter distance in metres and exactly one of elapsed time, split per 500 m or average watts. Leave the other two cells empty.
    2. Review the derived time, split and watts together. Use the same stated indoor-rower convention for all scenarios.
    3. Download CSV for rows, JSON to continue editing later, or PDF for a printable copy. Review exports before sharing them.

    Example: Indoor Rowing Pace and Power Calculator

    Convert a two-minute-five-second split to average watts.

    You add
    Scenarios: distance in metres, time, split per 500 m, average watts (tabs): 2000 6:45.5 500 2:05 500 179.2
    You get
    Calculated 3 rowing scenarios. Sample rows: 1 | 2000 | 6:45.5 | 1:41.4 | 336 | time; 2 | 500 | 2:05.0 | 2:05.0 | 179.2 | split; 3 | 500 | 2:05.0 | 2:05.0 | 179.2 | watts

    Options

    Input direction
    Time, split or watts can supply the scenario. A 2:05 split produces 179.2 W, and 179.2 W gives the same split.
    Time notation
    Use mm:ss, h:mm:ss or seconds; tenths are accepted. Distance is metres and split is per 500 m.

    Supported inputs and limits

    Up to 200 scenarios and 100,000 characters. Distance is at most 100,000 m. The Concept2 RowErg relationship does not cover BikeErg, calories or physiological assessment. Processing runs in the browser without uploading entries or automatic saving. JSON projects are limited to 100,000 bytes/characters. Saved files contain your supplied details. Printable reports use standard Latin fonts; unsupported characters are refused rather than omitted.

    Where your input is processed

    This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.

    The equipment relationship has a named scope

    Watts are 2.80 divided by the cube of seconds per metre. A 2:05 split for 500 m is 125/500 = 0.25 seconds per metre, giving 179.2 W. The inverse uses the cube root of 2.80 divided by watts. These are Concept2 rower calculations, not a physiological power measurement or the BikeErg distance convention.

    Questions about Indoor Rowing Pace and Power Calculator

    Can I use this for BikeErg?

    No. This page applies the stated indoor-rower relationship and 500-metre split convention.

    Does average watts estimate calories or fitness?

    No. Neither calorie expenditure nor a fitness or technique assessment is calculated.

    Why are scenarios displayed together?

    A table lets you compare the entered distance, time, split and power assumptions rather than treating a single pace as a training target.

    Project manager: Tony Hines · Content updated 4 October 2026 · Report a problem

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