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Free Advance Cycling Power Analysis Tool
Calculate Your FTP and Training Zones
Analyse your cycling performance data instantly with our free power analysis tool. Enter your numbers to calculate your FTP, training zones, watts per kilo and more - no account needed, no download required.
Your Functional Threshold Power (FTP) and the other numbers this tool generates are all incredibly important in cycling training. They form the foundation of your training zones. Enter your power numbers below and the tool will instantly calculate your personalised power zones, whether you follow the Coggan 7-zone model or a simpler 5-zone structure.
How to Use This Tool
Who Is This Tool For?
Using the cycling power analysis tool takes less than a minute:
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Enter your cycling power numbers in watts
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Enter your body weight in kilograms
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Select your preferred training zone model
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The tool instantly displays your full power zones and physiological profile
No sign-up, no payment, no fuss. Your data stays on your device and is never stored or shared.
This tool is built for any cyclist who trains with a power meter or smart turbo trainer, including:
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Road cyclists looking to structure their training around power zones
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Triathletes tracking cycling fitness alongside run and swim data
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Cyclists preparing for sportives, gran fondos, or racing
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Beginners who have just started training with power and want to understand their numbers
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Coaches looking for a quick, shareable tool for athletes
Whether you are new to training with power or a seasoned data nerd, the tool gives you the numbers you need in seconds.
Comprehensive Cycling Power Glossary & Metrics Guide
Core Performance Metrics
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FTP (Functional Threshold Power): The highest average power (watts) you can maintain for one hour. This is the foundation for your training zones.
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Watts Per Kilo (W/kg): Your power divided by body weight. This is the key metric for climbing performance.
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Estimated VO2 Max: Your maximal oxygen uptake, estimated from your 5-minute peak power.
Advanced Power Modeling (CP & W')
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Critical Power (CP): The theoretical "red line" of your aerobic system, derived from your power-duration curve.
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W' (W-Prime): Your anaerobic "battery." It represents the total work you can do above Critical Power before reaching exhaustion.
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Power-Duration Curve: A visual representation of your best power outputs from 1 second to several hours.
Advanced Power Modeling (CP & W')
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Aerobic Threshold (AeT / LT1): The point where lactate begins to rise above baseline - the ceiling of your "all-day" endurance pace.
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Fractional Utilisation: How close your FTP is to your VO2 Max. This shows if you need to build a bigger "engine" or just improve efficiency.
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Neuromuscular Power (Pmax): Your absolute maximum power output (1-5 seconds), representing raw sprint speed.
The Coggan 7-Zone Model
Zone 1 (Active Recovery): Very light effort to flush the legs.
Zone 2 (Endurance): The "all-day" pace used to build an aerobic base.
Zone 3 (Tempo): Moderate intensity, typical of fast group rides.
Zone 4 (Threshold): Effort right at your FTP; hard but sustainable.
Zone 5 (VO2 Max): Intense intervals used to increase your aerobic ceiling.
Zone 6 (Anaerobic Capacity): Short, very hard bursts.
Zone 7 (Neuromuscular Power): Maximum "raw" sprinting effort.