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Is the HRV on Charge 6 accurate?

‎02-10-2025 20:38 - last edited on ‎02-12-2025 14:57 by Fitbit Moderator

‎02-10-2025 20:38 - last edited on ‎02-12-2025 14:57 by Fitbit Moderator

About 2 weeks ago I got the charge 6. I’ve never tracked my sleep or anything before. My hrv so far has been between 20ms to 29ms, and 13ms once after I had a lot to drink one night. 
I am a 27yo female. Is this accurate? If so Its very low for my age.  Should I be worried? 

 

Moderator edit: clarified subject.

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3 REPLIES 3

‎02-10-2025 21:31

‎02-10-2025 21:31

I'm no expert on HRV but I think most people find the fitbit values low compared to published numbers or other measurements.  My suggestion is to just watch your trend and not compare it to other HRV numbers.

Before posting, re-read to see if it would make sense to someone else not looking at your Fitbit or phone.

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‎02-12-2025 12:48

In response to JohnnyRow

‎02-12-2025 12:48

Hello @Abbycatt21 

You might find this thread about HRV of interest (<-- click link).

Rieko | N California USA MBG PE

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‎02-12-2025 14:52 - edited ‎02-12-2025 14:52

In response to RiekoC

‎02-12-2025 14:52 - edited ‎02-12-2025 14:52

It's good to see you participating in the community @Abbycatt21.

Thank you for taking the time to share this inquiry regarding heart rate on your Charge 6. 

Please take in consideration the advices provided by @JohnnyRow @RiekoC.

Factors that can affect heart rate include air temperature, stress level, alcohol or caffeine intake, immune response to illness, and medication use (source).

Exercising in cold weather can make it more difficult for your device to track your heart rate, as environmental conditions can affect skin perfusion (the amount of blood that flows through your skin).

Spikes in your heart rate during sleep may be caused by sudden movements (for example, waking up and getting out of bed), or a weak signal due to wrist placement.

Review our tips on How do I improve the accuracy of a heart-rate reading?

For any concerns about your heart-rate data, contact your physician.

Thank you @JohnnyRow @RiekoC for your help.  

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