W’ Calculator

Use our calculator to determine your W'

You must do these 2-things

  • Ride as hard as you can for approximately 3-minutes, keep going if you can go longer than 3
  • Find an 8 to 20-minute max effort
  • Alternatively, you can put your FTP in the second box and enter 40 minutes.
Then just plug those values into our calculator

* This came from the GoldenCheetah Sweatpy project. We use the 2-parameter non-linear method.

You can always hop on your trainer, do a solid warm-up and go as hard as you can for these efforts, try to pace yourself so it is even power and see what your average power is. You can repeat this a few times over a couple weeks to get your maximum value. With practice, your pacing will be better and your W’ will get more accurate.

W’ Calculator

Use our calculator to determine your W'

You must do these 2-things

  • Ride as hard as you can for approximately 3-minutes, keep going if you can go longer than 3
  • Find an 8 to 20-minute max effort
  • Alternatively, you can put your FTP in the second box and enter 40 minutes.
Then just plug those values into our calculator

* This came from the GoldenCheetah Sweatpy project. We use the 2-parameter non-linear method.

You can always hop on your trainer, do a solid warm-up and go as hard as you can for these efforts, try to pace yourself so it is even power and see what your average power is. You can repeat this a few times over a couple weeks to get your maximum value. With practice, your pacing will be better and your W’ will get more accurate.

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