Is an HRV of 30 good?
Often, yes. On an Oura ring, WHOOP or Garmin, 30 ms sits a little under the middle for adults and is common at every age. It’s a good number if it’s normal for you. What would matter is a drop from your usual 45 to 30 that lasts a week.
30 can feel low next to bigger numbers online and charts with a higher middle line. Across 6 million Oura members, the median was 36 ms for women and 35 ms for men. Half of them sit below 35 or 36, and 30 is only a few ms under that.
HRV researcher Marco Altini says the people who write to him worried about their number typically report about 20 ms. He calls that normal for someone in their fifties and still common in younger adults.
What we’d do with a 30
- Find your usual range from two to three weeks of nights on the same device.
- If 30 is your normal and it dips after drinks and recovers after rest days, your system is working.
- If you usually sit at 50 and you’ve been at 30 all week, look for the cause: drinks, late dinners, a hard block of training, short sleep or an illness starting. One drink more than usual, against one fewer, came with HRV about 3 to 4 ms lower in a study of 20,968 WHOOP members.
What changes the meaning of 30
| What | Why it matters |
|---|---|
| Your age | RMSSD in people in their fifties was about half of teenage values in a 1998 study of 260 healthy people |
| Your device | Apple Watch reports SDNN, a different measurement. A 30 on Apple Watch and a 30 on a ring aren’t the same thing |
| Apple’s accuracy | In a 2024 test, Apple Watch came in about 8 ms under a chest strap on average |
| Your own range | 30 inside your range is a normal night. 30 well under it, for a week, is a change |
A 30 is a number, not a grade. Put it next to your own last few weeks and it starts to mean something.
5 sources
- Oura, What is the average HRV, 6 million members January to August 2026, updated 2026-09-16ouraring.com
- Altini M, Low heart rate variability (HRV), 2023marcoaltini.substack.com
- Umetani K et al., Twenty-four hour time domain heart rate variability and heart rate: relations to age and gender over nine decades, Journal of the American College of Cardiology, 1998pubmed.ncbi.nlm.nih.gov
- O'Grady B et al., The validity of Apple Watch Series 9 and Ultra 2 for serial measurements of heart rate variability and resting heart rate, Sensors, 2024pmc.ncbi.nlm.nih.gov
- Grosicki GJ et al., Real-world effects of alcohol on heart rate, sleep, and physical activity by age and sex, PLOS Digital Health, 2026pubmed.ncbi.nlm.nih.gov
