2. Determine Your Cuff Size
Once you’ve picked your type of blood pressure monitor, next you need to pick your size. Many people might think that it’s as simple as using the same size as your t-shirt, but that’s not the case! If your cuff is too small, your blood pressure reading will be artificially high. If your cuff is too large, you may get a reading that is lower than your actual blood pressure.
So… don’t skip this step! Measuring your arm is easy. With your arm hanging at the side of your body, measure the circumference of your upper arm at the midpoint between the shoulder and elbow.
Measuring your wrist is easy, too – just measure the circumference of your wrist about two fingers below your wrist crease.