How is FTP determined for the Cycling Power Zones Calculator?

FTP, or Functional Threshold Power, is generally estimated using a recent 20-minute maximum effort test and represents the highest power a rider can sustain for approximately one hour.

Can I use this calculator if I don't know my exact FTP?

Yes, you can enter an estimated FTP based on your best recent efforts, but results will be more accurate if FTP reflects your current threshold fitness.

What is the difference between the zone models offered?

The calculator provides several scientific models—Coggan Classic uses a 7-zone system, Sweet Spot uses 5 zones, British Cycling uses 6 zones, and Polarized uses 3 zones—each adjusting target percentages differently for training specificity.

Do the power zones change if I select a different zone model?

Yes, selecting different models adjusts the target power percentages for each zone, so the same FTP can produce slightly different watt ranges depending on the chosen methodology.

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Cycling Power Zones Calculator

Provided byFinancial Toolsetfinancialtoolset.com

Calculate your cycling training zones based on FTP using Coggan, Polarized, Sweet Spot, or British Cycling models.

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About this tool

What Cycling Power Zones Calculator does

The Cycling Power Zones Calculator helps cyclists determine their optimal training zones based on functional threshold power (FTP). Users enter their FTP in watts, and the tool generates structured intensity ranges using established models such as Coggan Classic, Sweet Spot, British Cycling, and Polarized. The output defines target power ranges for different training sessions, enabling athletes to target specific energy systems and improve performance through precise, science-backed workouts rather than guesswork.

Step by step

How to use the Financial Toolset Cycling Power Zones Calculator

1
Enter your Functional Threshold Power (FTP) in watts into the calculator
2
Select your preferred zone model from the available options (Coggan, Polarized, Sweet Spot, or British Cycling)
3
Review the generated training zones, which show target power percentages and watt ranges for different effort levels
4
Use the results to structure your training sessions at the specified intensity levels
5
Repeat with adjusted FTP values as your fitness improves over time

Is it right for you

Best for

This tool suits cyclists and coaches who want data-driven, structured training plans based on measurable fitness metrics rather than subjective effort levels.

Limitations

FTP input requires a recent maximum effort test for accuracy
Results are estimates based on mathematical models and may not account for individual physiology
The tool focuses on power output and does not include heart rate or perceived exertion guidance

Questions

Cycling Power Zones Calculator FAQ

How is FTP determined for the Cycling Power Zones Calculator?: FTP, or Functional Threshold Power, is generally estimated using a recent 20-minute maximum effort test and represents the highest power a rider can sustain for approximately one hour.
Can I use this calculator if I don't know my exact FTP?: Yes, you can enter an estimated FTP based on your best recent efforts, but results will be more accurate if FTP reflects your current threshold fitness.
What is the difference between the zone models offered?: The calculator provides several scientific models—Coggan Classic uses a 7-zone system, Sweet Spot uses 5 zones, British Cycling uses 6 zones, and Polarized uses 3 zones—each adjusting target percentages differently for training specificity.
Do the power zones change if I select a different zone model?: Yes, selecting different models adjusts the target power percentages for each zone, so the same FTP can produce slightly different watt ranges depending on the chosen methodology.

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