Can Smartwatches Accurately Record Blood Pressure?

Can Smartwatches Accurately Record Blood Pressure?

Wearable technology has become increasingly popular in recent years, with smartwatches leading the way. These devices offer a wide range of features, from fitness tracking to heart rate monitoring. But can they also accurately measure blood pressure?¹ In this blog post, we will explore the capabilities of watches when it comes to recording blood pressure and whether they can provide accurate readings.

Understanding Blood Pressure

Before delving into the accuracy of watches in measuring blood pressure, it's important to understand what blood pressure is and why it matters.² Blood pressure is the force exerted by the blood against the walls of the arteries as the heart pumps it around the body. It is typically measured in millimeters of mercury (mmHg) and consists of two numbers: systolic pressure over diastolic pressure.

The Limitations of Watches

While smartwatches can provide valuable insights into various aspects of our health, accurately measuring blood pressure is a complex task that goes beyond the capabilities of most wearable devices. Traditional blood pressure measurements require a cuff that is inflated to temporarily stop blood flow and then slowly released while a healthcare professional listens for the sounds of blood flowing through the arteries.

Watches, on the other hand, rely on optical sensors to measure heart rate, which can be used to estimate blood pressure. However, these sensors have limitations when it comes to accurately capturing the subtle changes in blood pressure. Factors such as motion, ambient light, and skin tone can affect the accuracy of the readings.

The Importance of Accuracy

When it comes to monitoring blood pressure, accuracy is crucial. High blood pressure, also known as hypertension, is a leading risk factor for heart disease, stroke, and other serious health conditions. It is essential to have precise measurements to make informed decisions about one's health and to detect any potential issues early on.

Alternative Methods

While watches may not be the most accurate tool for measuring blood pressure, there are alternative methods available. Home blood pressure monitors, approved by medical professionals, offer a more reliable way to track blood pressure at home. These devices typically consist of an inflatable cuff and a digital display that provides accurate readings.

It's important to consult with a healthcare professional to determine the best method for monitoring blood pressure. They can provide guidance on the most accurate devices and techniques for obtaining reliable measurements.


While smartwatches and wearable devices have revolutionized the way we track our health, their ability to accurately measure blood pressure is still limited. These devices can provide valuable insights into heart rate and other health metrics, but for precise blood pressure measurements, it is recommended to rely on traditional methods such as home blood pressure monitors or professional medical equipment. Remember, when it comes to monitoring your health, accuracy is key.




1. How Accurately Can A Smartwatch Measure Blood Pressure | What's The Best

2. Blood Pressure | Better Health Channel

Back to blog

Leave a comment

Please note, comments need to be approved before they are published.