How to Test Your FTP - 5, 20, and Ramp Test Protocols

Testing your FTP accurately is essential for effective power training. An incorrect FTP leads to training zones that are either too easy or too hard—both of which limit your progress. Here's how to choose the right test and execute it properly.

Understanding FTP Testing

FTP (Functional Threshold Power) represents your one-hour power. Since few cyclists want to do an actual hour-long all-out effort, we use shorter tests with mathematical adjustments to estimate FTP.

Each test has pros and cons. The right choice depends on your experience, time constraints, and mental approach to testing.

The 20-Minute Test

The 20-minute test is the gold standard for FTP testing. It's long enough to require proper pacing but short enough to be practical.

Protocol

Warm-up (20 minutes):

1. 10 minutes easy spinning (Zone 1-2)
2. 5 minutes progressive effort (Zone 2 to Zone 3)
3. 3 x 1-minute at VO2max pace with 1-minute recovery
4. 5 minutes easy spinning

Test (20 minutes):

• Start conservatively—many riders go too hard early
• Aim for even or negative split (second half faster)
• Use a flat road or indoor trainer
• Record average power with your power meter

Cool-down (10 minutes):

• Easy spinning to recover

FTP Calculation

FTP = 20-minute Average Power × 0.95

The 0.95 multiplier accounts for the higher intensity possible over 20 minutes compared to 60 minutes.

Example: 280W average × 0.95 = 266W FTP

Use our 20-Minute FTP Calculator to process your results.

Pros and Cons

Advantages:

• Most accurate for experienced cyclists
• Good predictor of race pacing ability
• Tests both physical and mental strength

Disadvantages:

• Requires pacing experience
• Mentally demanding
• Newer cyclists often pace poorly

Pacing Tips

• First 5 minutes: 95% of target power
• Minutes 5-15: Target power
• Final 5 minutes: As hard as sustainable
• Never start at your final power—build into it

The 5-Minute Test

The 5-minute test offers a quick alternative when time is limited or you're new to FTP testing.

Protocol

Warm-up (15-20 minutes):

1. 10 minutes easy spinning
2. 3 x 1-minute builds to hard effort
3. 5 minutes easy

Test (5 minutes):

• All-out effort from the start
• Sustain highest possible power
• Record average power

Cool-down (10 minutes):

• Easy spinning

FTP Calculation

FTP = 5-minute Average Power × 0.75

The lower multiplier accounts for the much higher intensity of a 5-minute effort.

Example: 350W average × 0.75 = 262W FTP

Use our 5-Minute FTP Calculator.

Pros and Cons

Advantages:

• Quick and time-efficient
• Easier to pace (just go as hard as possible)
• Less mentally intimidating

Disadvantages:

• Less accurate for most cyclists
• Overestimates FTP for strong 5-minute power types
• Underestimates for diesel/endurance types

Who Should Use It

• Time-crunched athletes
• Beginners learning to test
• Athletes who struggle with 20-minute pacing
• Those with strong anaerobic capacity (adjust multiplier to 0.72-0.73)

The Ramp Test

The ramp test has become popular on platforms like Zwift due to its simplicity and reproducibility.

Protocol

Warm-up (10 minutes):

• Light spinning as instructed by the platform

Test (10-20 minutes):

• Power increases every minute (typically 20W)
• Continue until you cannot maintain the target
• No pacing decisions required

Cool-down (5-10 minutes):

• Easy spinning

FTP Calculation

FTP = 75% of Your Best 1-Minute Power

Some protocols use the final completed step's power instead.

Use our Zwift FTP Calculator for ramp test results.

Pros and Cons

Advantages:

• No pacing decisions—just follow the steps
• Highly reproducible
• Works well for tracking progress
• Quick total test time

Disadvantages:

• Can overestimate FTP for strong anaerobic athletes
• Underestimates for endurance-focused athletes
• Doesn't test ability to pace

Ramp Test Variations

Standard (Zwift): 20W per minute increases, 75% of final minute

GP Lama Protocol: 25W per minute, different calculation

Female-Specific: Smaller step increases for more accurate results

Which Test Should You Choose?

Choose the 20-Minute Test If:

• You have racing or time trial experience
• You want the most accurate result
• You can commit to proper warm-up and testing
• Pacing for 20 minutes feels manageable

Choose the 5-Minute Test If:

• You're very time-constrained
• You're new to FTP testing
• You struggle with sustained efforts
• You want something quick and simple

Choose the Ramp Test If:

• You train primarily on Zwift or a smart trainer
• You want highly reproducible results
• Making pacing decisions during tests stresses you
• You test frequently to track progress

Preparing for Your FTP Test

The Day Before

• Rest day or very easy ride
• Good hydration
• Normal sleep
• Avoid alcohol

Test Day

• Eat normally 2-3 hours before
• Caffeine if you normally use it
• No training before the test
• Test at your normal training time

Environment

• Indoor: Fan on high, consistent temperature
• Outdoor: Flat, uninterrupted road
• Avoid traffic, stoplights, and distractions
• Use the same setup each test for comparison

Common Testing Mistakes

Starting Too Hard

The most common error. You feel fresh and go out too fast, then fade badly in the second half. Aim for negative splits.

Inadequate Warm-up

Cold muscles and cardiovascular system won't perform optimally. Complete the full warm-up protocol.

Testing When Fatigued

If you've been training hard, your test will underestimate true FTP. Test after a rest day or easy week.

Inconsistent Conditions

Testing indoors one time and outdoors the next makes comparison difficult. Pick one and stick with it.

Too Frequent Testing

Testing creates fatigue. Every 4-8 weeks is sufficient for most athletes.

After Your Test

Calculate Your Zones

Use your FTP to set training zones:

Validate Your Result

Your FTP should feel like:

• Very hard but sustainable for ~60 minutes
• Conversation is impossible
• Breathing is heavy but not gasping
• Power you could maintain in a time trial

If zones feel too easy or too hard, adjust by 2-5%.

Plan Your Training

With accurate FTP, you can:

• Follow structured workouts correctly
• Track your Training Stress Score
• Set realistic race pacing goals
• Start an FTP training plan

FTP Testing Frequency

Related Articles

• Complete FTP Guide - Everything about FTP
• How to Find Your FTP - Find FTP on Strava, Garmin, Peloton
• FTP Chart by W/kg - Compare your result
• FTP Chart by Age - Age-adjusted benchmarks
• What is a Good FTP? - Goal-based benchmarks
• How to Improve Your FTP - Training strategies
• Zwift FTP Test Guide - Indoor testing tips