What is a good HRV? An HRV chart by age and sex, and how to read your own number

Short Answer

There is no single "good" HRV number — heart rate variability varies enormously from person to person, so "good" only makes sense relative to your age, sex, and above all your own baseline. In the largest published reference set, 1,906 screened healthy adults measured by clinical ECG, average RMSSD ran from about 43 ms in the 25–34 group down to 19 ms at 65–74 — and the standard deviation within each group was almost as large as the average, meaning healthy people are spread across an enormous range. Your watch will usually show a higher number than that, because it measures differently. Either way, these are reference points, not targets to hit. The two things that actually matter: your own baseline (a genuinely good HRV for you is one that's near or above your personal 30-day average) and your trend over time (a stable or rising trend is the reassuring signal; a persistent downward drift is the one worth attention). This article explains what the number is, gives the age ranges with heavy caveats, and — more usefully — shows how to read your HRV instead of chasing someone else's.

If you have looked up your number, found it below some chart, and felt a small drop in your stomach — that reaction is extremely common, and it is not evidence that something is wrong with you. Population averages hide an enormous normal spread, and being under one is not a finding. A number below a chart is not your fault, not a verdict on your health, and not something you caused by not trying hard enough — a large share of perfectly healthy people sit there. You are not failing a test, and checking your number more often will not make it mean more.

A note on the data: HRV is what Welltory measures, and this is the question people ask most — "is my number good?" The honest answer is that a raw number in isolation means very little; its meaning comes almost entirely from context: your age, your own baseline, and your trend. That's why a tracker that shows your personal history is far more useful for answering "is my HRV good?" than any chart of population averages.

Why there's no single "good" number

HRV depends on so many stable personal factors — age, genetics, sex, fitness, and physiology — that healthy values span a huge range. Two equally healthy people can have HRVs that differ by a factor of two or three. This is the single most important thing to understand, because it means comparing your number to a friend's, an influencer's, or a generic "good HRV" is close to meaningless. A 25-year-old endurance athlete and a healthy 60-year-old are simply not on the same scale, and neither is doing anything wrong. So the question "is my HRV good?" can't be answered by a lookup table — it can only be answered relative to you. With that firmly in mind, the age ranges below are useful for rough orientation and nothing more. It helps to think of it like height or resting heart rate: there's a broad healthy range, people sit at different points in it for reasons that have nothing to do with health, and knowing the range tells you far less than knowing what's normal for you. Nobody panics that they're shorter than a friend; the same calm is warranted here. The number on your wearable is genuinely useful — but as a personal trend line, not as a score to be graded against everyone else's.

HRV chart: typical RMSSD ranges by age and sex

Most "HRV by age" charts online are rounded numbers with no source attached. Here are published ones instead. This is the KORA S4 population study: 1,906 healthy adults (782 women, 1,124 men), five-minute ECG recordings taken lying down after a rest period, screened to exclude heart disease, hypertension, diabetes, thyroid disease and anyone on medication. Values are mean ± standard deviation, in milliseconds.

Four things this table is actually telling you, and one thing it is not.

Age is the real pattern. RMSSD roughly halves between the twenties and the seventies in both sexes. That is normal physiology, not decline in the worrying sense, and not something to fight past a healthy range. A number that would be low for someone in their twenties can be entirely healthy at fifty-five. (For the age story in depth, see how HRV declines with age.)

Sex barely matters — less than the internet suggests. Women's RMSSD is numerically a little higher in four of the five decades, but the study found no statistically significant difference between the sexes in RMSSD in any decade. By the sixties the two columns are identical. If you have been told men and women need different HRV targets, that is not what this data shows.

Look at the ± column. The spread is often as large as the average. In the 25–34 band, women average 42.9 with a standard deviation of 22.8 — meaning perfectly healthy people in that group sit anywhere from the high teens to the sixties. Being below the average is not being abnormal. This is exactly why a single number, compared to a chart, tells you almost nothing.

The decline flattens. The biggest drops are between the thirties and fifties. From 55–64 to 65–74 the change was not statistically significant at all — HRV falls, then largely levels off.

And the thing this table is not: it is not what your watch will show you. These are five-minute clinical ECG recordings taken lying down; your device measures overnight, through skin, with a different algorithm, and many report a logged or scaled value rather than raw RMSSD. Numbers from a wearable are frequently higher, and they are not directly comparable to this table or to your friend's device. Use the table to understand the shape of the thing — big age effect, tiny sex effect, huge normal spread — and use your own device only against your own past.

Is there a different HRV chart for women?

No — it is the same chart. Charts labelled "HRV chart female" circulate widely, but in the reference data above the sex difference was not statistically significant in any age band. Women averaged slightly higher RMSSD than men in the younger decades, and by 65–74 both sat at 19.1 ms. Look at the ± figures in the table: the spread within each sex is several times larger than the gap between them. Your age and your own baseline tell you far more than your sex does.

What does move a woman's number in a way worth knowing about is the menstrual cycle. HRV tends to run higher in the follicular phase and lower in the luteal phase, so a reading taken in the week before a period can look worse than the same body a fortnight earlier. That is a pattern within one person over one month, not a different normal range — and it is a good reason to compare yourself to your own average rather than to any chart. More on that in how your metrics shift across the cycle.

So if you came looking for a female HRV chart: use the table above, find your age band, and then stop looking at it. The number that matters is how today compares with your own last 60 days.

What actually matters: your baseline and your trend

Here's the useful way to answer "is my HRV good?" — in two questions that don't require any population chart.

Is it near or above my own baseline? Once you've tracked for a few weeks, you have a personal average. A daily reading within roughly ±10% of your 30-day average, and not persistently below your usual, generally indicates solid recovery. A single reading below that is normal noise; a run of them is a signal.

Is my trend stable or rising, or drifting down? This is the big one. Research consistently finds that the trend is far more informative than any single value — a sustained downward HRV trend is a stronger warning sign than one low morning, and a stable-or-rising trend is the reassuring picture. So a "good HRV" is really a good trajectory: your own number, holding steady or climbing, with the day-to-day noise averaging out. This is why obsessing over a single figure misses the point — the shape of the line over weeks is the actual scoreboard, and a single morning's figure barely registers on it. (See why HRV fluctuates day to day.)

How to build (and use) your personal baseline

Since your baseline is the yardstick, it's worth knowing how to get a reliable one. The key is consistency of measurement: HRV is sensitive to when and how you measure it, so a baseline is only meaningful if the readings that make it up are taken the same way. In practice that means measuring the same way each time — for most people, an overnight or first-thing-in-the-morning reading, before caffeine and before the day's stress loads in. Give it a couple of weeks of consistent readings before you trust the average, because a handful of days isn't enough to average out the noise. Once you have that baseline, using it is simple: today's number matters only in relation to it. Is it roughly in your normal band? Is the multi-week average holding or moving? You stop asking "is 45 good?" (unanswerable in the abstract) and start asking "is this good for me, right now?" (answerable, and useful). A practical rule many people find helpful: a reading within about ±10% of your 30-day average is business as usual, a single reading well below it is usually just a rough night, and only a run of low readings — the average itself sliding — is worth acting on. That single reframing, from absolute number to personal baseline, resolves most of the anxiety people feel about their HRV.

What the number actually is (RMSSD)

A quick note on what you're reading, because it helps you compare like with like. Most consumer wearables report HRV as RMSSD — a specific measure of the beat-to-beat variation that reflects parasympathetic ("rest and recover") activity, and the default output on most devices. It's usually measured overnight or at rest, when it's most stable and comparable day to day. Two practical consequences: first, only compare HRV numbers taken the same way (same device, same measurement window) — an overnight RMSSD and a quick daytime spot-check aren't the same thing; and second, because different apps and devices use different methods and windows, your number from one device isn't directly comparable to a friend's from another. This is yet another reason your own baseline on your own device is the only fair yardstick.

Is higher always better?

Mostly, higher HRV reflects better recovery and fitness — but "chase the highest possible number" is the wrong frame. HRV can be temporarily very high in some non-ideal states, and an unusually high reading that's far off your baseline is worth the same curiosity as an unusually low one. More practically, the goal isn't a record-high morning; it's a healthy, stable trend that reflects a well-recovered nervous system. Think of HRV like a thermostat reading rather than a high score: you want it in a healthy range for you and steady, responding sensibly to what you do — dropping after a hard workout or a bad night, recovering afterward. A number that moves appropriately with your life and trends well is "good," regardless of whether it's higher or lower than someone else's. It's also worth knowing that highly trained endurance athletes sometimes post strikingly high HRVs, which can make ordinary healthy people feel their own numbers are inadequate by comparison — they're not. The vast majority of people are not elite athletes, and a perfectly healthy, well-recovered nervous system produces a perfectly ordinary HRV. Comparing yourself to the highest numbers you can find online is a recipe for needless worry, not for insight.

Why your HRV number jumps around — and why that's fine

People often worry that a "good" HRV should be steady, and get alarmed when theirs swings from day to day. In fact, healthy HRV is supposed to move. It's a sensitive readout of your nervous system, so it responds to everything — last night's sleep, yesterday's workout, a stressful meeting, a glass of wine, even the time you measured and how you were breathing. A number that bounced from one day to the next isn't broken; it's doing its job. This is exactly why a single reading can't tell you whether your HRV is "good" — you might have caught a low morning after a bad night, or a high one after a rest day. The signal you actually care about only emerges when you average out that daily noise over weeks. So if your HRV looks erratic, don't read it as a problem with your heart or your health; read it as a reminder to zoom out to the trend. (The full explanation is in why your HRV fluctuates day to day.) The practical upshot is liberating: you don't need to hit a good number every morning, and a bad-looking day is almost never worth worrying about on its own.

A quick sanity check for "is my HRV good?"

If you want a simple mental checklist, run through these four questions. One: is my reading roughly in the ballpark for my age? (Use the table as loose orientation only.) Two: is it near or above my own 30-day average? Three: is my multi-week trend stable or rising rather than steadily falling? Four: does it move sensibly — dropping when I'm stressed, under-slept, or training hard, and recovering afterward? If the answers are broadly yes, your HRV is healthy for you, full stop — even if the absolute number looks modest next to someone younger or fitter. If the answers point to a persistent, unexplained downward trend, especially with symptoms, that's your cue to look into the causes and, if needed, see a doctor. Notice that three of the four questions are about you and your trend, and only one glances at the population range — which is exactly the right balance. A "good HRV" is far more about trajectory than about clearing a numeric bar.

When your HRV is a flag

While there's no universal cutoff, a couple of patterns are worth attention. Regularly falling well below your own usual level — a sustained low trend, especially near or below the low end for your age and sex — can flag excessive stress, poor fitness, under-recovery, or a health issue worth looking into. So can a persistent downward drift over weeks with no lifestyle explanation, particularly alongside symptoms or a rising resting heart rate. Neither is a diagnosis — it's a prompt to check the usual causes and, if nothing fits, talk to a doctor. (See why is my HRV so low.) On the flip side, a stable or improving trend in your normal range is exactly what a healthy HRV looks like, and no cause for concern even if the absolute number looks "low" next to a younger person's. In short, the flags are about direction and context — a falling trend, a departure from your own norm, symptoms — never about a single figure failing to clear an arbitrary bar.

How to bring this up with your doctor — and what to ask for

Most of the time an HRV number does not belong in an appointment on its own. What belongs there is a pattern, and only when something else goes with it.

When it is worth raising. A sustained drop in your own baseline that has held for weeks with no lifestyle explanation, and something else alongside it — a resting heart rate that has climbed and stayed up, new breathlessness or chest discomfort, fainting or near-fainting, unexplained weight change, or fatigue that rest is not touching. HRV on its own, with no symptoms and no other change, is very rarely the reason to book.

What to bring. Your own trend over weeks or months, not a single day. Your resting heart rate over the same period, which clinicians find more familiar and more interpretable. Any recorded ECG strip your device has taken. Dates when the shift started and what else was happening then — illness, a new medication, a change in sleep or drinking.

How to phrase it. "My resting heart rate has been about eight beats above my own baseline for three weeks and my HRV has dropped with it, and I have been short of breath on stairs" lands very differently from "my HRV is low." The first is a change over time in you, with a symptom attached. The second is a number without context, and a number without context is easy to wave away — sometimes rightly.

What to ask for, by name. If nothing obvious explains it, reasonable first-line checks include thyroid function (TSH, with free T4 if TSH is borderline), a full blood count and ferritin for anaemia and low iron stores, fasting glucose and HbA1c, and — if there are palpitations, fainting or chest symptoms — an ECG, with a Holter monitor if the symptoms come and go. Ask for ferritin specifically rather than assuming "my blood was fine" covered it; iron stores fall long before a blood count looks abnormal.

If you are brushed off and the pattern continues, it is fair to ask directly what else could explain a sustained change in resting heart rate, and to ask that the question be noted so it can be revisited. Bring duration and daily impact — those are what move a concern from interesting to clinical.

How Welltory helps

The reason "is my HRV good?" is hard to answer from a chart is that the answer lives in your data — and that's precisely what Welltory gives you. Rather than a generic average, you get your own baseline and trend: what's normal for you, how today compares to your 30-day average, and whether your line is holding steady, rising, or drifting down. That turns an unanswerable question into a clear one — "good for me" becomes visible. You can also connect your HRV to your sleep, stress, and activity to understand why it sits where it does, and watch it respond appropriately to your life. Two honest caveats: HRV is individual and device-specific, so read your own trend on your own device rather than comparing to others or to population charts; and it's a wellness signal, not a diagnosis — a persistent unexplained low is a reason to get checked. But as the tool for knowing whether your HRV is good, tracking your own history beats any lookup table. (To move the number, see how to improve your HRV.)

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