Cycling FTP & Power Zones Calculator - Coggan 7-Zone Breakdown & Watts/Kg
Determine precise training targets for intervals, Sweet Spot endurance, and threshold blocks from your 20-minute FTP test.
How to Use FTP Power Zones in 3 Simple Steps
Step 1: Upload
Drag & drop your .FIT, .GPX, or .TCX activity file. All processing is 100% private in your browser.
Step 2: Process
FitCrop inspects telemetry streams, removes anomalies, recalibrates metrics, or fixes binary checksums.
Step 3: Export
Download your clean Strava, Garmin, and Zwift compatible file with 1 click. Zero server wait.
Frequently Asked Questions
What is Sweet Spot power in cycling?
Sweet Spot is 88% to 94% of your FTP. It produces maximal aerobic adaptations and mitochondrial growth with manageable muscle fatigue.
How is Watts per Kilogram (W/kg) calculated?
Divide your FTP in Watts by your body weight in kilograms. For example, 300W ÷ 75kg = 4.00 W/kg.