Our medical experts vetted the best watches that monitor heart rate on the market for 2025.

Find out how to get the most out of the heart-rate monitor on your Apple Watch, smartwatch or fitness tracker, plus our top picks of the best smartwatches for heart monitoring.

Whether you use an armband or chest strap, add some smarts to your exercise and training routine with one of the best heart rate monitors we've tested.

The Wahoo Trackr Heart Rate is a rechargeable chest strap that's easy to use and offers accurate readings, but has few extra features.

Heart Rate Monitors A heart rate monitor is a personal monitoring device that allows a subject to measure their heart rate in real time or record their heart rate for later study.

The Apple Watch added electrocardiogram (ECG) heart measurements in 2018, and the feature has been saving lives since. Learn how to use it.