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UK blood pressure ranges
A reading has two numbers. The top one (systolic) is the pressure when your heart pushes blood out; the bottom one (diastolic) is the pressure when your heart rests between beats. A reading goes in the highest range that either number reaches.
| Range | Taken at home | Taken at a GP surgery or pharmacy |
|---|---|---|
| Very high | 170/100 or higher | 180/120 or higher |
| High - stage 2 | 150/95 or higher | 160/100 or higher |
| High | 135/85 or higher | 140/90 or higher |
| Slightly raised | Above 120/80 | Above 120/80 |
| Healthy | 90/60 to 120/80 | 90/60 to 120/80 |
| Low | Below 90/60 | Below 90/60 |
Why home and clinic limits are different
The NHS and NICE use slightly lower limits for readings you take yourself at home than for readings taken by a nurse, doctor or pharmacist. High blood pressure starts at 135/85 at home, compared with 140/90 when checked by a healthcare professional.
Getting a reading you can trust
Sit on an upright chair with your back supported, feet flat on the floor and your arm resting on a table. Relax, breathe normally and don't talk. Take two readings at least 1 minute apart. A single high reading isn't a diagnosis - if your GP wants to check, they'll usually ask you to do a 7-day home check. More in Measuring at home and Understanding your reading.
Want to keep track?
Free BP Tracker keeps your readings in one place and shows how they change over time. Prefer paper? Download our free printable blood pressure log.
Ranges from the NHS and NICE guideline NG136, checked on . See all official sources. This checker is for information only and isn't a diagnosis.