Blood Pressure Checker – What Your Reading Means

Understanding the two numbers

The top number (systolic) is the pressure when your heart beats. The bottom number (diastolic) is the pressure between beats. Both are measured in millimetres of mercury (mmHg).

Blood pressure ranges for adults

Below 90/60 — low
90/60 to 120/80 — ideal
120/80 to 140/90 — slightly raised
140/90 or higher — high
180/120 or higher — very high: measure again and get urgent advice

Taking an accurate reading at home

Sit quietly for 5 minutes first, back supported and feet flat
Rest your arm at heart level and use the right cuff size
Avoid caffeine, smoking and exercise for 30 minutes before
Take two or three readings a minute apart and note them all

Why it matters

High blood pressure rarely causes symptoms, but over time it raises the risk of heart attack, stroke and kidney disease. The good news: it is easy to check, and treatable.

Frequently asked questions

Is 130/85 high blood pressure?

It is above the ideal range but below the level usually treated as high. Recheck it, and look at lifestyle steps that help.

When is blood pressure an emergency?

A reading of 180/120 or higher, especially with chest pain, breathlessness, a severe headache, confusion or vision changes, needs urgent help — call 112 or 999.

Can an online doctor help with blood pressure?

Yes. A doctor can look at your readings, risks and medicines and advise what to do next, including in-person checks if needed.

Official sources and further reading

This page is general information for patients in Ireland, not a diagnosis or personal medical advice. If you are worried about your health, speak to a doctor. In an emergency call 112 or 999.

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Blood Pressure Checker — What Does My Reading Mean?