HRV Readiness Guide
Interpret HRV (RMSSD/SDNN) values, trends, and baseline deviation for daily training readiness decisions.
Inputs
Fill in the inputs and press Calculate to see your science-backed results.
How to use HRV Readiness Guide
Interpret HRV (RMSSD/SDNN) values, trends, and baseline deviation for daily training readiness decisions.
Choose measurements that describe your actual session or situation, confirm the units, then calculate. Read the result alongside its assumptions and use the tool again when your inputs change.
Inputs explained
Current HRV (ms)
Enter a measured or estimated value (minimum 10) (maximum 200), using the unit indicated in the field label.
Baseline HRV (7-day avg, ms)
Enter a measured or estimated value (minimum 10) (maximum 200), using the unit indicated in the field label.
Measurement method
Choose the option that matches your context; available options include Morning Rmssd, Nightly Avg, Pre Workout.
Age
Enter a measured or estimated value (minimum 12) (maximum 80), using the unit indicated in the field label.
Resting HR (bpm)
Enter a measured or estimated value (minimum 35) (maximum 100), using the unit indicated in the field label.
How to interpret the output
Keep testing conditions and intensity consistent. Estimates from field tests do not replace laboratory assessment.
Repeat measurements using similar conditions when monitoring trends. Numerical predictions can vary with input accuracy, measurement method and individual circumstances.
Limitations and responsible use
HRV interpretation requires consistent measurement conditions (same time, same position). Single readings are not actionable.
Read the full disclaimerFrequently asked questions
What does the HRV Readiness Guide estimate?
Interpret HRV (RMSSD/SDNN) values, trends, and baseline deviation for daily training readiness decisions.
Which information do I need for this cardio tool?
Provide Current HRV (ms), Baseline HRV (7-day avg, ms), Measurement method, Age, Resting HR (bpm). Use your own relevant measurements and the units indicated in each field.
How should I interpret the result?
Keep testing conditions and intensity consistent. Estimates from field tests do not replace laboratory assessment. Compare results with your goals and other relevant observations rather than using a single output to make a major decision.
Disclaimer: HRV interpretation requires consistent measurement conditions (same time, same position). Single readings are not actionable. Read the medical disclaimer.
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