Health & Medicine · Fitness · Cardio & Endurance
Cycling Power Zones Calculator
Calculate your 7 cycling training power zones from your Functional Threshold Power (FTP) using the Coggan power zone model.
Calculator
Formula
Each zone is a percentage range of FTP (Functional Threshold Power in watts). Zone 1: Active Recovery (<55% FTP), Zone 2: Endurance (56–75%), Zone 3: Tempo (76–90%), Zone 4: Lactate Threshold (91–105%), Zone 5: VO2 Max (106–120%), Zone 6: Anaerobic Capacity (121–150%), Zone 7: Neuromuscular Power (>150%).
Source: Coggan, A.R. & Allen, H. 'Training and Racing with a Power Meter', 2nd ed., 2010. Coggan Classic Levels.
How it works
Each of the seven Coggan power zones is defined as a percentage range of your FTP. FTP is the highest average power output you can sustain for approximately 60 minutes. Zone 1 (Active Recovery) sits below 55% of FTP, while Zone 7 (Neuromuscular Power) covers efforts above 150% of FTP. The intermediate zones target progressively more demanding physiological systems: aerobic base, tempo, lactate threshold, VO2 max, and anaerobic capacity.
The Coggan Classic Levels model, published in Training and Racing with a Power Meter (2010), is the most widely adopted power-zone framework in competitive cycling and triathlon. It provides clear physiological targets for each zone and is compatible with most cycling training software including TrainingPeaks and Garmin Connect.
If you enter your body weight, the calculator also computes your FTP per kilogram (W/kg), a key performance indicator used to compare riders across different body sizes and to assess climbing potential. Elite male road cyclists typically achieve 5.0–6.5 W/kg; recreational cyclists commonly fall in the 2.0–3.5 W/kg range.
Worked example
Example: A rider tests and establishes an FTP of 280 W and weighs 72 kg.
Zone 1 (Active Recovery): up to 280 × 0.55 = 154 W
Zone 2 (Endurance): 280 × 0.56 to 280 × 0.75 = 157–210 W
Zone 3 (Tempo): 280 × 0.76 to 280 × 0.90 = 213–252 W
Zone 4 (Lactate Threshold): 280 × 0.91 to 280 × 1.05 = 255–294 W
Zone 5 (VO2 Max): 280 × 1.06 to 280 × 1.20 = 297–336 W
Zone 6 (Anaerobic Capacity): 280 × 1.21 to 280 × 1.50 = 339–420 W
Zone 7 (Neuromuscular): above 280 × 1.51 = above 423 W
FTP/kg: 280 ÷ 72 = 3.89 W/kg — a solid Category 3–4 amateur level.
Limitations & notes
The Coggan zones are calibrated to an FTP determined by a proper 20-minute test (or ramp test with appropriate correction factor). Using an estimated or inaccurate FTP will shift all zone boundaries incorrectly. Additionally, zone models differ between coaches and platforms — TrainerRoad, British Cycling, and Zwift each use slight variations in percentage boundaries. This calculator implements the original Coggan Classic Levels. Riders with atypical physiologies (e.g., very high anaerobic capacity or slow-twitch dominance) may find their subjective effort does not match the prescribed zones, and periodic retesting every 6–12 weeks is recommended as fitness changes.
Frequently asked questions
How do I find my FTP if I haven't tested it?
The standard method is a 20-minute all-out time trial on a trainer or flat road; multiply your average power by 0.95 to estimate FTP. A ramp test (3-minute incremental steps to failure) is an easier alternative — most platforms estimate FTP as 75% of peak 1-minute power from the ramp. Many smart-trainer apps such as Wahoo SYSTM and TrainerRoad include guided FTP tests.
What is the difference between the Coggan zones and heart rate zones?
Heart rate zones are based on a percentage of your maximum or threshold heart rate, while power zones are based on FTP watts. Power responds instantly to changes in effort, whereas heart rate lags by 30–60 seconds due to cardiovascular inertia. Power zones are therefore more precise for short intervals and pacing strategy, though heart rate remains useful for gauging overall physiological load during long endurance rides.
How often should I retest my FTP?
For athletes in structured training, retesting every 6–12 weeks is generally recommended to ensure your zones remain accurate as fitness improves. A significant jump in perceived effort at previously comfortable wattages, or improved performance in races, often signals that your FTP has risen and a retest is due.
What is a good FTP per kilogram (W/kg) for a recreational cyclist?
Recreational cyclists who ride 2–4 times per week typically achieve 2.0–3.0 W/kg. Dedicated amateurs (Category 3–4 racers) commonly reach 3.5–4.5 W/kg. Professional riders average 5.5–6.5 W/kg during grand tour climbing stages. For general fitness and sportive participation, 2.5 W/kg is a comfortable benchmark; 4.0 W/kg opens doors to competitive amateur racing.
Can I use these zones on a turbo trainer or outdoor?
Yes — power is consistent whether measured indoors on a smart trainer or outdoors with a power meter crank or pedal system. Note that some riders produce slightly different power indoors versus outdoors due to cooling, positioning, and motivation differences, so it is best to test in the environment where you primarily train.
Does Zone 7 have an upper limit?
In the Coggan model, Zone 7 (Neuromuscular Power) has no defined upper bound — it represents maximal sprint efforts where power output is primarily limited by muscular force and motor recruitment rather than aerobic or anaerobic metabolic capacity. These efforts typically last less than 30 seconds and can exceed 1000 W for trained sprinters.
Last updated: 2025-07-10 · Formula verified against primary sources.