FTP Calculator
Estimate your Functional Threshold Power (FTP) from a recent test below — or skip the all-out test entirely. TrainerRoad’s AI FTP Detection calculates your FTP automatically and keeps it accurate as your fitness changes.
Learn About TrainerRoadCalculate Your FTP
Your Estimated FTP
Based on TrainerRoad’s 20-minute test protocol (95% of your 20-minute power).
Know Your FTP Without the Test
Learn About TrainerRoadSkip the FTP Test Entirely
TrainerRoad’s AI FTP Detection calculates your FTP automatically and keeps it accurate as you get fitter — no stressful testing, just adaptive plans that make you faster.
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What Is FTP?
Functional Threshold Power (FTP) is the highest average power you can sustain for roughly an hour, measured in watts. It is the most useful number in cycling training: it sets the intensity of your workouts and tracks your fitness over time. As your FTP rises, you are getting faster.
Sets Your Training Zones
Every workout intensity and interval target is set as a percentage of your FTP.
Tracks Your Progress
A rising FTP is the clearest sign your training is working.
Benchmarks Your Fitness
Compare efforts across seasons, routes, and other cyclists with a single number.
You Do Not Need an FTP Test to Know Your FTP
Traditional FTP testing means a hard, all-out effort every few weeks just to find a number. TrainerRoad replaces it with AI FTP Detection, which analyzes your rides and detects your FTP automatically — accurately, and without a single dreaded test. Your training stays matched to your fitness as it changes, and a structured training plan keeps raising it.
TrainerRoad is cycling’s most effective training system: structured workouts, science-based plans, and AI that personalizes everything to you — including your FTP.
How AI FTP Detection Works
Connect Your Rides
Import your ride history from Garmin, Strava, Wahoo, and more.
AI Analyzes Every Ride
TrainerRoad AI studies your power data and how your fitness responds to training.
Your FTP, Detected
Accept your new FTP with one tap — every workout adjusts to it instantly.
“AI FTP Detection is seriously amazing and so accurate!”
The Old Way: Calculating FTP From a Test
Prefer to estimate FTP yourself? Because an all-out hour is hard to pace, cyclists estimate FTP from a shorter test and apply a proven multiplier — the same math the calculator above uses.
20-Minute Test
Warm up, then ride as hard as you can sustain for 20 minutes. Your FTP is 95% of your average power for that effort.
8-Minute Test
After a warm-up, complete two 8-minute all-out efforts and take the average power of your best one. Your FTP is 90% of that power.
Ramp Test
Ride a steadily increasing power target until you can no longer continue. Your FTP is 75% of the best one-minute power you reached. The ramp test is the quickest way to test, and it is how the TrainerRoad Ramp Test works.
Real Riders. Real Results.
“It helped me increase my FTP by 40w in 4 months. What else do I need to say?”
“TR has taken me from a Cat 5 to a Cat 1 (pending approval) in about 6 seasons… a 6th place finish at nationals.”
“Just started cycling less than 12 months ago… Started at 195 FTP and with TrainerRoad progression I'm sitting at 272.”
More Ways to Get Faster
Watts Per Kilogram Calculator
See how your power-to-weight ratio stacks up against other cyclists.
Cycling Training Plans
Science-based plans for every goal, schedule, and experience level.
AI FTP Detection FAQ
Common questions about how TrainerRoad detects your FTP from your riding — answered by the team.