What HRV value should I enter?

Enter your overnight RMSSD average as reported by your wearable. Oura, Garmin, and Whoop all report RMSSD. If you use Apple Watch, note it reports SDNN — which is not directly comparable and cannot be entered here.

What percentile is good?

There is no universally 'good' percentile. What matters more is your personal trend — is your HRV stable, improving, or declining over weeks? A stable 40th percentile trend is more meaningful than a fluctuating 70th percentile.

HRV Percentile Calculator — Find Your RMSSD Ranking

RMSSD only: This calculator uses RMSSD values. Oura, Garmin, and Whoop all report RMSSD. Apple Watch reports SDNN — a different metric that cannot be compared here.

Age

Sex

Your HRV — RMSSD (ms)

Your Percentile

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Reference data used

Age	Male — p10/p25/p50/p75/p90	Female — p10/p25/p50/p75/p90
18–25	28 / 38 / 55 / 70 / 85	30 / 42 / 60 / 76 / 90
26–35	22 / 32 / 48 / 62 / 75	24 / 35 / 52 / 66 / 80
36–45	18 / 27 / 40 / 53 / 65	19 / 29 / 43 / 57 / 68
46–55	14 / 22 / 33 / 44 / 55	15 / 24 / 36 / 48 / 58
56–65	11 / 18 / 28 / 37 / 46	12 / 19 / 30 / 40 / 48
66+	8 / 14 / 22 / 31 / 38	9 / 15 / 24 / 32 / 40

Sources: Shaffer F, Ginsberg JP. Front Public Health. 2017. Altini M, Kinnunen H. JMIR Form Res. 2021.

Not medical advice: Percentile rankings are for educational reference. A single HRV reading is less meaningful than your trend over weeks. Consult a clinician for health concerns.

HRV Percentile Calculator

Reference data used

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