Check and measure your HRV

• Is my HRV normal?

  Enter the HRV number your watch, ring or app shows, with your age and sex, and see where it sits in published research on healthy adults.

  You need: A number you already have. Works in any browser.

  Check your number

• Camera HRV test

  Rest a fingertip over your phone camera to estimate your pulse rate variability. Less accurate than a strap, but you need nothing else.

  You need: A phone with a camera, ideally with a light. Hold still for about two minutes.

  Try the camera test

• Chest-strap HRV test

  Connect a Bluetooth chest strap and take a careful resting reading in your browser. You get RMSSD, SDNN and heart rate from your own beats.

  You need: A chest strap that sends beat-to-beat data, and Chrome or Edge on a computer or Android phone.

  Take a strap reading

These tools are for education and do not diagnose any condition. If you are worried about your heart or how you feel, talk to a doctor. Medical disclaimer