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Blood Pressure Calculator

The best way to understand your blood pressure is by checking it regularly.

Enter the results of your blood pressure checks into our free blood pressure calculator provided by the NHS to understand what your reading means.

    • Easy to use
    • 30+ hours of continuous use
    • Used by NHS Scotland
    • Measures blood oxygen levels (SP02)
    • Measures pulse rate
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Blood pressure is the pressure that your circulating blood places on the walls of your arteries as it travels around your body.

High blood pressure (Hypertension) puts extra strain on your arteries and organs and over time this can lead to serious and potentially life-threatening issues such as heart attacks and strokes.

Low blood pressure (Hypotension) is generally less serious but may cause lightheadedness and dizzy spells.

For most people high blood pressure has no noticeable symptoms, approximately one third of people who have it are unaware. A blood pressure test takes minutes and could save your life.


This blood pressure calculator is sourced from the NHS and can instantly help you understand your reading. Enter the two numbers from your reading into the blood pressure checker and click ‘Submit’. The blood pressure checker will calculate your reading and summarise what your reading means.

The blood pressure tool will explain your reading and give advice from the NHS on improving or maintaining healthy blood pressure.

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A regular blood pressure check is the best way of monitoring blood pressure. You can request a blood pressure test from a GP or pharmacy, or take a reading at home using a blood pressure monitor.

If you have been diagnosed with high or low blood pressure, or have a higher risk of developing either it is advisable to check your blood pressure more frequently. It is recommended that adults over 40 should check their blood pressure at least every 5 years to detect any potential issues early.

This blood pressure checker is sourced from the NHS, all recommendations given by the blood pressure tool are supplied by the NHS website. Use the blood pressure checker as often as you wish.

How to take your blood pressure

You can take your blood pressure at home using a blood pressure monitor and use the blood pressure calculator as guidance on what your reading means. Ensure the monitor has been clinically validated. Find a list of blood pressure monitors available for home use on the British and Irish Hypertension Society (BIHS) website.

  • Sit quietly and comfortably on a chair with legs uncrossed and feet flat on the ground with an even surface in front of you.
  • Place your arm on the surface in front of you so that it is supported level with your heart. Remove tight clothing and wrap the cuff around your upper arm.
  • Activate the blood pressure monitor, the cuff will inflate to restrict the blood flow in your arm is it gauges your blood pressure. This will last for a short time.
  • As the cuff deflates, your reading is displayed on the monitor. Enter the two numbers into the blood pressure checker to determine the health of your reading.

A blood pressure reading gives two numbers.

The top systolic reading gives the pressure of your blood on your arteries at it travels around your body.

The bottom diastolic reading is the lowest pressure on your arteries when your heart rests between beats.

Enter these numbers into the blood pressure calculator and ‘Submit’. The blood pressure calculator will instantly summarise your reading and give recommendations.

Record readings entered into the blood pressure checker to monitor changes and seek medical advice if you are concerned about any results using the blood pressure calculator.

Do I need to use a blood pressure checker?

You may not need a blood pressure checker for every reading, but it will help manage blood pressure health. As you become familiar with your readings, using a blood pressure checker will advise how to improve and maintain healthy blood pressure.

The blood pressure calculator can be accessed via desktop, tablet or mobile.

If you have questions about taking blood pressure or using the blood pressure checker, contact us. If you are concerned about your reading after using this blood pressure calculator or any other blood pressure checker, seek medical advice.


    • Easy to use
    • 90 results memory
    • Universal cuff (22 - 42cm)
    • Approved medical device by BIHS and ESH
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    • Easy to use
    • Compact and portable
    • 60 results memory for each user
    • Approved medical device by ESH
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    • Easy to use
    • 90 results memory
    • Irregular heartbeat detection
    • Universal cuff (22 - 42cm)
    • Approved medical device by BIHS and ESH
    Buy nowAdd to basket

    • Easy to use
    • 2 users x 60 results memory
    • Irregular heartbeat detection
    • Approved medical device
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    • 3 users x 60 results memory
    • Irregular heartbeat detection
    • Universal comfort cuff (22 - 42cm)
    • Average readings as BIHS guidelines
    • Approved medical device
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    • 2 users x 90 results memory + guest mode
    • Irregular heartbeat detection
    • Excessive body motion detection
    • Universal cuff (22 - 42cm)
    • Approved medical device by BIHS and ESH
    Buy nowAdd to basket

    • Bluetooth enabled with MedM blood pressure app
    • Blood pressure trend on display
    • Universal cuff (22-42cm)
    • Body movement and cuff tightness detection
    • Clinically validated by BIHS & ESH
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    • Universal Cuff
    • 22 - 42cm Cuff
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