How to Measure Your Blood Pressure at Home Accurately
November 5, 2026 · 2 min read
Measuring your blood pressure at home helps your doctor see how you are day to day. For the result to be trusted, the device and the method need to be right.
Many people with high blood pressure now have their own monitor. Home readings are very useful, because they show blood pressure in everyday life, not only when you feel tense in the doctor's room. But they are only useful if the device and the method are right.
Choosing a monitor
The British Heart Foundation, a UK heart charity, gives some advice:
- Ideally choose a monitor that measures at the upper arm. Use a wrist monitor only if an upper arm cuff cannot be used.
- Make sure the cuff fits, with just enough space to slide two fingers underneath.
- Choose a monitor that has been clinically validated.
- Have it serviced and calibrated at least every 2 years.
How to sit
The NHS and the British Heart Foundation advise:
- Sit on a chair with a backrest, your back against it, and both feet flat on the floor.
- Rest your arm on a table, with your hand relaxed, not clenched.
- Wear short sleeves, or avoid thick clothing, so nothing bunches up under the cuff.
- Put the cuff on your upper arm.
- Stay calm, breathe normally, and do not talk during the reading.
Repeat the reading
After the first reading, repeat it a few minutes later to check it. The British Heart Foundation suggests a third reading if the first two are quite different.
If your doctor has asked you to measure at home, follow the schedule they give. Readings are usually taken in the morning and evening.
Write the results down
Note every reading with the date and time, or keep the printouts if your monitor can print. Bring these records to your check up, so your doctor can judge whether your medicine and dose are right. Do not change your dose yourself based on one or two readings.
When not to rely on it
The NHS advises not to rely on a home monitor if you have new symptoms such as dizziness, nausea, headache, or chest pain. In that situation, get medical help straight away.
A Coapotek pharmacist can help you choose a blood pressure monitor and show you how to use it properly.
Sources
- NHS. Check your blood pressure reading.
- British Heart Foundation. How to measure your blood pressure at home, updated 21 October 2026.