HRV by age and sex: reference values
The Lifelines Cohort Study in the Netherlands measured HRV (as RMSSD) from short resting ECGs in 84,772 healthy people aged 13 to 91, excluding people with heart disease, high blood pressure, type 2 diabetes or obesity. These are the median values:
| Age | Women, median RMSSD | Men, median RMSSD |
|---|---|---|
| 20 to 24 | 52 ms | 48 ms |
| 30 to 34 | 42 ms | 37 ms |
| 40 to 44 | 34 ms | 29 ms |
| 50 to 54 | 27 ms | 24 ms |
| 60 to 64 | 21 ms | 19 ms |
| 70 to 74 | 18 ms | 16 ms |
The study found HRV falls steadily from young adulthood until about 60, then levels off. Women's median was about 5 ms higher than men's from 20 to 45 and about 2.5 ms higher from 45 to 59, with no clear difference after 60.
Why your wearable's number may not match
- Different timing. The study above used 10-second readings while people rested. Oura measures only during sleep, averaging five-minute samples, and WHOOP folds HRV into its morning Recovery.
- Different math. WHOOP and the Lifelines study use RMSSD. Apple Watch stores HRV as SDNN, a different calculation, so its numbers can't be compared with RMSSD tables.
- Different people. A company's member averages describe people who wear its device, not the general population.
Oura says typical HRV values range from under 20 to over 200 ms, and that you should compare your HRV only with your own history.
How to use your own baseline
- Wear the same device the same way for a few weeks to learn your normal range.
- Watch the trend, such as a weekly average, rather than any single morning.
- Notice what moves it. Poor sleep, stress, illness and hard training without recovery tend to pull HRV down.
- Look for sustained changes. A drop that lasts several days, especially with symptoms, is worth a closer look.
Low HRV alone is not a diagnosis. Call 911 for chest pain, fainting or severe shortness of breath. See a clinician for a racing or irregular heartbeat, dizziness, new swelling or unusual tiredness, or an irregular rhythm alert from your watch.
Reading your HRV with Gabriel
Gabriel can read your HRV and resting heart rate trends from your wearable next to your lab results and tell you what stands out. Ask Gabriel anything free by app, web, text or voice. For the basics, see what is HRV.
Common questions
What is a good HRV for a 40-year-old?
In a large study of healthy adults, the median resting RMSSD at 40 to 44 was about 34 ms for women and 29 ms for men, with a wide healthy range around it. Your own trend matters more than the median.
Is an HRV of 30 bad?
Not necessarily. It is close to the median for healthy people in their 40s in one large study, and lower values are common at older ages. Compare it with your own baseline.
Do women have higher HRV than men?
Slightly, in one large study: women's median was about 5 ms higher from age 20 to 45 and about 2.5 ms higher from 45 to 59, with no clear difference after 60.
Does HRV go down with age?
Yes. Median HRV falls steadily from young adulthood until about age 60, then levels off.
What is a normal HRV on Oura or WHOOP?
Oura says typical values range from under 20 to over 200 ms. WHOOP says the middle half of its 20 to 25 year olds average about 55 to 105 ms, and 60 to 65 year olds about 25 to 45 ms.
Sources
- Reference values of heart rate variability from 10-second resting electrocardiograms: the Lifelines Cohort Study European Journal of Preventive Cardiology (via PubMed Central)
- Heart Rate Variability (HRV) Cleveland Clinic
- Heart Rate Variability Oura Member Care
- Heart Rate Variability Explained WHOOP
- heartRateVariabilitySDNN Apple Developer Documentation
This guide is general information, not medical advice. It does not replace a visit with a licensed clinician. Gabriel membership is not health insurance.