Free bike tool

FTP Calculator

Your Functional Threshold Power is the highest power you can hold for a sustained effort, your cycling threshold. It is the number every power training zone is built from. One honest 20-minute test and you'll know yours.

The 20-minute test protocol

  1. Warm up. 5 min @ RPE 3.
  2. Activation, 5 rounds. Repeat the following five times:
    Hard: 30 sec @ RPE 8-9Easy: 50 sec @ RPE 4
  3. Prime. 5 min @ RPE 6.
  4. The test: 20 min @ RPE 9-10. Ride the maximum power you can sustain for the full 20 minutes. Don't go out too hot, it needs to be sustained the whole way.
  5. Cool down. 15 min @ RPE 3.

Your FTP is 95% of your best 20-minute power. That single number sets the power you train at to develop your fitness. Ride the test on the same bike and surface you'll race or train on, ideally with a power meter or smart trainer.

Enter your test

One 20-minute effort, one honest number.

In watts, from the 20-minute test effort above.

Your Functional Threshold Power
- W

Your power training zones

Every ride has a purpose. These are the power ranges to train in, built straight off your FTP.

ZonePowerWhat it's for
Use this in the Weymouth race planner →

Don't go it alone.

Your FTP is one number in a much bigger picture. Real progress comes from a coaching team in your corner, mapping and running the whole journey with you: training, strength and conditioning, nutrition and race-day strategy, built around your life and adjusted as you go. Let us get you to the start line ready, and across the finish line in the best possible shape.

Apply for 1:1 coaching