FTP Cycling Calculator
Estimate threshold watts, W/kg, zone targets, and next-test goals from common cycling field tests.
📌Presets
Each preset loads a realistic rider profile and fills the test fields before you calculate.
⚙FTP Calculator
FTP cycling snapshot
Enter one or more test efforts and the calculator will estimate FTP.
📊FTP Metrics
📑Reference Tables
| Method | Factor | Input | Note |
|---|---|---|---|
| 20 min | 95% | Best all round | Steady |
| Ramp | 75% | Fast screen | Short |
| 2x8 | 90% | Two efforts | Repeat |
| 60 min | 100% | Gold standard | Hardest |
| Zone | %FTP | Watts | Use |
|---|---|---|---|
| Z1 | 0-55% | Easy | Recovery |
| Z2 | 56-75% | Steady | Endurance |
| Z3 | 76-87% | Rhythm | Tempo |
| Z4 | 88-105% | Hard | Threshold |
| Z5 | 106-120% | Sharp | VO2 |
| W/kg | Band | Read | Use |
|---|---|---|---|
| <3.0 | Entry | Steady | Build |
| 3.0-3.9 | Local | Solid | Base |
| 4.0-4.9 | Fast | Strong | Race |
| 5.0+ | Elite | Sharp | Rare |
| Session | %FTP | Time | Purpose |
|---|---|---|---|
| Recovery spin | 40-55% | 20-45m | Fresh legs |
| Endurance | 60-75% | 60-180m | Base miles |
| Sweet spot | 88-94% | 12-30m | Build power |
| Threshold | 95-105% | 8-20m | Raise FTP |
💡Tips
Functional Threshold Power (FTP) is the highest wattage that an individual can produce for approximately one hour. FTP represent the limit an athlete can maintain before becoming exhausted. Individuals uses FTP to plan there training and ensure their training level match their fitness level.
Without knowledge of an individual’s FTP, their training may not be as effective as it could otherwise be. FTP can be difficult to measure because performing a test that requires an individual to last for one hour is both physical and time-consuming. An alternative method of testing FTP is to perform shorter test.
FTP: What It Is, How to Test It, and How to Train
For example, performing a 20-minute test at maximum effort and multiplying the result by 0.95 will provide an estimate of an individual’s FTP. Additionally, an individual could perform a ramp test where the resistance are gradually increased until the individual can no longer maintain that level of effort; multiplying the highest wattage by 0.75 will provide an estimate of an individual’s FTP. Finally, performing two eight-minute tests at maximum effort and taking the average of both tests will provide an estimate of individual’s FTP multiplied by 0.9.
These tests are shorter to allow for increased repeatability in measuring FTP. However, they may not be as accurate as the one-hour test. An individual should not rely on one test to determine there FTP.
Instead, an individual can perform and blend multiple tests together to provide a more accurate estimate of there FTP. Additionally, the person can consider body weight in the calculation of the power they can produce. By calculating the watts per kilogram an individual can push, those value could be compared with others regardless of their weight.
FTP allow an individual to establish zones in which they can train. For instance, endurance can be trained within 75% of an individual’s FTP, known as a Zone 2. The Sweet Spot zone is used to improve an individual’s fitness without fatigue and ranges between 88% and 94% of an individual’s FTP.
Threshold zones are between 95% and 105% of an individual’s FTP and are used to increase FTP directly. Finally, when an individual ride at a rate above 106% of there FTP, they are working in the VO2 max zone to increase there capacity for endurance. Watts per kilogram (W/kg) is a measurement that relates an individual’s FTP to there weight.
An individual whose W/kg is below 3.0 is building there base power. An individual whose W/kg is between 3.0 and 3.9 is a solid local rider. An individual whose W/kg is between 4.0 and 4.9 is a strong racer.
Finally, people deem an individual whose W/kg is above 5.0 an elite rider. Additionally, because an individual’s ability to climb hills is closely related to there weight, W/kg is the best measurement of climbing power. In order to test an individual’s FTP, an individual must follow specific step.
For example, the individual should find a flat course. Additionally, the individual should ensure they have fresh leg and that there fan speed is set to a consistent value. Each test should be performed using the same settings and conditions.
Additionally, an individual should not test there FTP too frequent. For example, testing every week can lead to fatigue and inaccurate measurements of FTP. Instead, FTP should be tested every four to six weeks.
An individual’s training zone may change with there fatigue. For instance, the tempo zone is between 76% and 87% of FTP and is used to improve an individual’s endurance while also increasing there threshold power. Additionally, recovery rides fall between 40% and 55% of an individual’s FTP to allow for muscles to rest.
An individual should perform endurance ride between 60% and 75% of there FTP to ensure that they can last longer during there cycling efforts. To improve an individual’s FTP, they should train threshold zones between 95% and 105% of there FTP for session between eight and twenty minutes long. An individual can improve with cycling by increasing there FTP.
An individual can use there FTP to set a goal to produce five or ten additional watt. When they reach this target, they can retest their FTP. Additionally, calculators is available to assist an individual with the mathematics behind there FTP.
For instance, an FTP calculator can take an individual’s FTP and there weight and output the wattage target for each training zone.
