How to use
- Enter the top (systolic) number.
- Enter the bottom (diastolic) number.
- Read the category and what to do next.
Frequently asked questions
What is normal blood pressure?
For adults, under 120/80 mmHg is considered normal.
When is blood pressure an emergency?
Above 180/120 mmHg, measure again after resting. If it stays that high, contact a doctor at once. With chest pain, breathlessness, weakness or vision or speech problems, call emergency services.