Cycling Power Calculator

Calculate your watts per kg, FTP training zones, and see how your power compares to different cycling levels.

49.9Kuses
8.7/10(432)

Watts/kg

3.33

FTP

250W

FTP Training Zones

Zone 1 - Recovery0-138W
Zone 2 - Endurance138-188W
Zone 3 - Tempo188-225W
Zone 4 - Threshold225-263W
Zone 5 - VO2max263-300W
Zone 6 - Anaerobic300-375W
Zone 7 - Sprint375-500W

W/kg Classification

Recreational1.5-2.5 W/kg
Sport2.5-3.5 W/kg
Competitive Amateur3.5-4.5 W/kg
Cat 1/2 Racer4.5-5.5 W/kg
Professional5.5-7.0 W/kg

Your level: Sport

Understanding Cycling Power

FTP (Functional Threshold Power) is the maximum wattage you can sustain for about 1 hour. Watts per kilogram (W/kg) is the key metric for climbing and overall cycling performance. Training zones based on FTP percentages guide workout intensity.

Disclaimer: This tool is provided “as is” for informational and educational purposes only. Results may not be 100% accurate. ToolBird makes no warranties, express or implied, regarding the accuracy, reliability, or completeness of any output generated by this tool. This tool does not constitute professional, legal, financial, medical, or tax advice. Always consult a qualified professional for important decisions. By using this tool, you agree that ToolBird and its operators shall not be held liable for any damages, losses, or consequences arising from the use of this tool or reliance on its results. All processing occurs in your browser — we do not store, transmit, or access your data. Use at your own risk.