About this tool
The Cycling FTP Calculator estimates your Functional Threshold Power from a test effort and splits it into the seven Coggan training zones. It runs in your browser and stores nothing.
FTP is your test power times a factor for the protocol: a 20-minute test uses 0.95, an 8-minute test 0.90, and a ramp test 0.75 — or enter your FTP directly (factor 1). From that FTP the seven zones are set as percentage bands: Z1 active recovery under 55%, Z2 endurance 56–75%, Z3 tempo 76–90%, Z4 threshold 91–105%, Z5 VO2 max 106–120%, Z6 anaerobic 121–150% and Z7 neuromuscular above 150%. Your power-to-weight ratio is FTP ÷ bodyweight in kilograms (pounds are converted by dividing by 2.2046).
Use the zone table to steer interval and endurance work, and track W/kg as a fitness marker over time. Testing protocols and zone models vary between coaches, so treat these as a solid standard rather than the only answer. This is general fitness information, not medical advice.