How to measure and record blood pressure at home

Blood pressure changes throughout the day. Following the same routine each time can make your readings easier to compare and share with your healthcare professional.

Before you begin

Use a validated upper-arm monitor with the correct cuff size. Follow the manufacturer's instructions and ask a healthcare professional or pharmacist if you are unsure about the fit.

Avoid smoking, caffeine and exercise for 30 minutes.

Empty your bladder.

Sit quietly for five minutes.

Take your measurement

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1. Sit correctly. Back supported, feet flat and legs uncrossed.
2. Leave an elbow gap. Place the cuff on bare skin, 1–2 cm above the elbow bend.
3. Point the tube down. Follow the cuff marker so the tube exits from the lower edge and runs down the inner arm, as its instructions show.
4. Support your arm. Rest it on a flat surface at heart level and keep the tube clear.
5. Measure twice. Stay still and quiet. Wait one minute, repeat and save both readings.

Record the systolic and diastolic values, pulse if shown, date and time. Add a brief factual note when something about the routine was different.

BpBook keeps your readings, times and notes together so they are easier to review and share at an appointment.

When to ask for help

Ask your healthcare professional how often to measure and what to do about readings outside the range discussed with you. Do not change prescribed medication based on this article.

If you feel seriously unwell or believe you may be experiencing a medical emergency, seek urgent medical help through your local emergency service.

Sources

• American Heart Association: Home Blood Pressure Monitoring
• American Heart Association and American Medical Association: How to Measure Your Blood Pressure at Home
• Omron: Upper-arm blood pressure monitor instructions

Sources last checked 28 July 2026.