What is a normal HRV?

There is no single normal value; it depends on age, method and device. Track your own trend.

Is higher HRV always better?

Generally higher values relative to your own baseline are associated with good recovery, but single readings fluctuate a lot.

Wearables · Health metrics

Heart rate variability (HRV)

HRV measures the variation in time between heartbeats. What it reflects, why values differ so much between people and devices, and how to use your own trend.

Written by LON6EVITY Editorial Team · Last updated 2026-09-29

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What HRV is

Heart rate variability is the variation in time between consecutive heartbeats. A 1996 Task Force of the European Society of Cardiology and the North American Society of Pacing and Electrophysiology set out standard methods for measuring it.

What it reflects

HRV is influenced by the autonomic nervous system. A 2017 review by Shaffer and Ginsberg describes the common metrics — such as RMSSD and SDNN — and explains that values depend strongly on age, measurement length and method.

How to use it

Because normal values vary widely between people and devices, comparing yourself with others is not useful. A sustained drop compared with your own baseline may accompany illness, poor sleep, alcohol, stress or heavy training.

Limitations

Wearable readings are estimates designed mainly for wellness and fitness. Accuracy varies by device, fit, skin, movement and model. They do not diagnose conditions; discuss concerning or persistent changes with a clinician. Different brands use different HRV metrics and measurement windows, so numbers are not comparable between devices.

Factors that can affect the result

Age
Fitness
Sleep
Alcohol
Stress
Illness
Breathing and posture

Questions people commonly ask

What is a normal HRV?: There is no single normal value; it depends on age, method and device. Track your own trend.
Is higher HRV always better?: Generally higher values relative to your own baseline are associated with good recovery, but single readings fluctuate a lot.

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Sources

Heart rate variability: standards of measurement, physiological interpretation and clinical use. Task Force of the ESC and NASPE, Circulation, 1996.
An Overview of Heart Rate Variability Metrics and Norms. Shaffer F, Ginsberg JP, Front Public Health, 2017.
Heart Rate Variability. Oura Member Care.