Medindia
Medindia LOGIN REGISTER
Advertisement

Blood Pressure Calculator - High and Low Blood Pressure Numbers

Last Updated on Apr 25, 2023

Unsure about what your blood pressure numbers mean? Don't know if they indicate high blood pressure or low blood pressure?
If you have recently checked your blood pressure and know the top and bottom numbers, we suggest that you key the numbers in the box below and instantly get an idea whether it is normal or abnormal. The calculator evaluates your blood pressure by comparing it to the standard range for your age group, identifying any deviations from the norm. The final result will help you understand why it is important to regularly keep track of your blood pressure readings and gives tips on how to maintain a normal blood pressure.
The American Heart Association (AHA) and other medical organizations recommend that people with high blood pressure or hypertension monitor their blood pressure at home. Home monitoring(1 Trusted Source
Home monitoring confirms clinic diagnosis of high blood pressure

Go to source
) is easy and saves both time and money and at the same time avoids white coat hypertension(2 Trusted Source
Mallion JM. Clinical significance and treatment requirements in white coat and masked hypertension. Special Issues in Hypertension. 2012;13-24. DOI:10.1007/978-88-470-2601-8_2

Go to source
) Blood pressure is a 'mathematical representation' of two forces(3 Trusted Source
Mathematical Modeling of Noninvasive Blood Pressure Estimation Techniques-Part II: Brachial Hemodynamics. Mauro Ursino, Cristina Cristalli. J Biomech Eng. Feb 1995, 117(1): 117-126 (10 pages)

Go to source
). The top number (systolic) is the force applied against the walls of the arteries when the heart beats and the bottom number (diastolic) is the force applied against the walls between the two beats of the heart (i.e. when heart is in a relaxed state). A blood pressure range of 110/70 to 120/80 is considered normal.

Calculate your Blood Pressure Numbers

Gender *
Age *
Systolic pressure (Top number) /
Diastolic pressure (Bottom number) *
(mm Hg)
Are you taking any blood pressure tablets? *   
* Required

Note: This calculator is only for people over 15 years of age
The readings should be taken when a person is in a relaxed and resting state. The test should be repeated at different intervals of the day or over a few days until similar values are consistently obtained. Measurement should be avoided immediately after exercise or a meal, as blood pressure may be high at these times.
Beware also of the White Coat Syndrome! It is a condition in which some people blood pressure is high in a doctor’s office but normal at home. This may be because of anxiety and stress. White Coat Syndrome may lead to misdiagnosis and unnecessary treatment.

Advertisement

Do remember that it is important to measure the blood pressure (BP) properly for the management of hypertension(4 Trusted Source
Measurement of Blood Pressure in Humans: A Scientific Statement From the American Heart Association | Hypertension 2019; 73:e35-e66. DOI: 10.1161/HYP.0000000000000087.

Go to source
) and this may require more than one reading with the right cuff size, its correct positioning on the arm, remaining still and avoiding caffeinated drinks or smoking(5 Trusted Source
Monitoring Your Blood Pressure at Home

Go to source
). Both manual or automated blood pressure measurement requires the same precautions.

Advertisement

Monitoring Blood Pressure at Home

High blood pressure or hypertension  is a silent disease and is a major cause of death (6 Trusted Source
High Blood Pressure

Go to source
). There maybe no symptoms or very subtle indicators like anxiety, excessive sweating, palpitation, fatigue, dizziness or ringing in the ear. Monitoring the blood pressure at home can prevent the complications such as heart attack and stroke associated with high blood pressure(7 Trusted Source
Health Threats From High Blood Pressure

Go to source
).  Home blood pressure devices usually use automatic blood pressure cuff and gauge. Buy one that is authenticated by validated by a reputable medical association. The following instructions can help with the home monitoring of your blood pressure-

  • Preparation for reading – Avoid caffeinated drinks and smoking. Empty your bladder and you should not have done any exercise for at least 30 minutes prior to the reading. Also avoid looking at your cell phones or watch TV during it measurement.(8 Trusted Source
    8 steps to ensure your patients get their BP right

    Go to source
    )
  • Timing of the Reading -Take the reading at the same time everyday – either in morning or evening or at both time.(9 Trusted Source
    Monitoring Your Blood Pressure at Home

    Go to source
    )
  • Be still when taking the reading – Take rest for 5 minutes before the reading and be still as moving can affect the reading.(10 Trusted Source
    How to use a blood pressure monitor

    Go to source
    )
  • Take the right posture by sitting correctly – Sit on a dining chair rather than sofa with your back straight and supported. Keep you feet flat on the floor and not crossed. Your elbow should be supported flat on the table and the cuff should be where your mid- chest is so that it is t the same level as your heart.(11 Trusted Source
    Home Blood Pressure Monitoring Explained

    Go to source
    )
  • Bare the Arm for the Reading – Tie the cuff on the bare arm, so either take of the shirt or pull up your sleeves.
  • Choose the right cuff & Tying the cuff-  Depending on your arm size you could choose between small, medium and large cuff. It is best to ask the nurse or doctor what cuff size is best for your arm. The cuff should be tied snugly around your arm and two finger breadths above your elbow.(12 Trusted Source
    Blood Pressure Monitoring at Home

    Go to source
    )
  • Number of Readings– Take two to three readings at least one to two minutes apart. Use the same arm every day
  • Measure at the same time every day. It’s important to take the readings at the same time each day, such as morning and evening. It is best to take the readings daily for a week and jot it all down in the dairy. Show it to your doctor or nurse on your next visit to the doctor.(13 Trusted Source
    Self-Measurement of Blood Pressure at Home in the Management of Hypertension

    Go to source
    )

  • 1. Home monitoring confirms clinic diagnosis of high blood pressure
    (https://newsroom.heart.org/news/home-monitoring-confirms-clinic-diagnosis-of-high-blood-pressure?preview=3656)
  • 2. Mallion JM. Clinical significance and treatment requirements in white coat and masked hypertension. Special Issues in Hypertension. 2012;13-24. DOI:10.1007/978-88-470-2601-8_2
    (https://www.semanticscholar.org/paper/Clinical-Significance-and-Treatment-Requirements-in-Mallion/699c7d4ade259acf4755cdb54d93037c29de569d)
  • 3. Mathematical Modeling of Noninvasive Blood Pressure Estimation Techniques-Part II: Brachial Hemodynamics. Mauro Ursino, Cristina Cristalli. J Biomech Eng. Feb 1995, 117(1): 117-126 (10 pages)
    (https://doi.org/10.1115/1.2792259)
  • 4. Measurement of Blood Pressure in Humans: A Scientific Statement From the American Heart Association | Hypertension 2019; 73:e35-e66. DOI: 10.1161/HYP.0000000000000087.
    (https://www.ahajournals.org/doi/full/10.1161/HYP.0000000000000087)
  • 5. Monitoring Your Blood Pressure at Home
    (https://www.heart.org/en/health-topics/high-blood-pressure/understanding-blood-pressure-readings/monitoring-your-blood-pressure-at-home)
  • 6. High Blood Pressure
    (https://www.cdc.gov/bloodpressure/index.htm)
  • 7. Health Threats From High Blood Pressure
    (https://www.heart.org/en/health-topics/high-blood-pressure/health-threats-from-high-blood-pressure)
  • 8. 8 steps to ensure your patients get their BP right
    (https://www.ama-assn.org/delivering-care/hypertension/8-steps-ensure-your-patients-get-their-bp-right)
  • 9. Monitoring Your Blood Pressure at Home
    (https://www.heart.org/en/health-topics/high-blood-pressure/understanding-blood-pressure-readings/monitoring-your-blood-pressure-at-home)
  • 10. How to use a blood pressure monitor
    (http://www.bloodpressureuk.org/BloodPressureandyou/Homemonitoring/Howtomeasure)
  • 11. Home Blood Pressure Monitoring Explained
    (https://bihsoc.org/wp-content/uploads/2017/09/Home_blood_pressure_monitoring_explained.pdf)
  • 12. Blood Pressure Monitoring at Home
    (https://familydoctor.org/blood-pressure-monitoring-at-home/)
  • 13. Self-Measurement of Blood Pressure at Home in the Management of Hypertension
    (http://www.clinmedres.org/content/3/1/19.long)

Post a Comment

Comments should be on the topic and should not be abusive. The editorial team reserves the right to review and moderate the comments posted on the site.

Comments

leanne-

Great. Easy to understand the info and calculator

Ole70, Denmark

What is the source of the equations behind the blood pressure calculator?

Advertisement

Recommended Readings on Blood Pressure

Top 10 Tips to Lower Your Blood Pressure
High blood pressure is the leading risk factor for cardiovascular disease. But it can be lowered naturally by simple lifestyle changes.
Health Benefits of Tribulus Terrestris
Tribulus terrestris also known as puncture vine boosts male sexual health and treats infertility and skin complaints.
Blood Pressure Cuffs - Are you measuring your Blood Pressure Right?
Your health care provider may use a blood pressure monitor to measure blood pressure or suggest the use of home blood pressure monitor for a better BP control.
White-coat Syndrome
White-coat syndrome is an increase in blood pressure only in a clinical setting, due to a fear of doctors and needles. The symptoms include weight gain and increased risk of diabetes among others.
Online Mini Health Checkup
Mini health check up is a quick and simple way to assess your current health status and risks for heart disease, if any. It predicts your life expectancy too.
Cholesterol Risk Calculator
The Cholesterol risk calculator assesses your risk for heart disease using the result of cholesterol test (lipid profile test).
Health Screening Guidelines
Use these Health Screening Guidelines that list the medical conditions you should be screened for in your next health check-up.
Blood Sugar-Conversion
Our easy to use blood sugar calculator helps you to get your blood sugar conversion results either in mg/dl used by the American system or in mmol/l used by the British system, which is accepted worldwide.
Blood Sugar Chart
The blood sugar chart gives you the fasting glucose values and glucose tolerance test values for normal people and people with early diabetes and established diabetes. Also use the calculator to find out if you have diabetes.
Blood Pressure Chart
Blood pressure is the pressure of the blood flowing through your blood vessels against the vessel walls. Just by entering you age, you can get the accurate range of blood pressure value.
Deep Vein Thrombosis (DVT) Risk Calculator
Is your movement restricted for a prolonged duration due to surgery or other reasons? Are you prone to excessive clotting of blood? Find out your risk for Deep Vein Thrombosis (DVT) using this calculator.
Respiratory Rate and Breath-Count Calculator
Respiratory Rate and Breath-Count Calculator calculates the respiratory rate and number of breaths. More on how breathing exercises and meditation practices are necessary for good health.
Pulse Rate Chart (or) Heart Rate Chart
Pulse rate or heart rate calculator helps you to find out the recommended average pulse rate for your age.
Father's Blood Group Calculator
Try this calculator that will give in 3 simple steps the probable blood type (group) for the father when the child's (Son/Daughter) blood type and the mother's blood type are known.
Quiz on Blood Pressure
Blood pressure is an important vital sign. Answer this Quiz and learn more about blood pressure. ...
Foods that Can Lower Your High Blood Pressure
Foods rich in dietary potassium, calcium and anti-oxidants such as rutin, kukoamine and vitamin C can lower your high blood pressure significantly.
Low Blood Pressure | Hypotension Home Remedy
Home remedies offer you herbal and natural method to treat low blood pressure or hypotension effectively.
Home Remedies for High Blood Pressure / Hypertension
Home remedies offer you herbal and natural methods to treat high blood pressure or hypertension. Follow these simple and natural remedies to lower or control high blood pressure.
Yoga and High Blood Pressure | Hypertension
Yoga, an ancient system of healing helps to cure high blood pressure or hypertension due to stress. Practicing yoga everyday can be a good treatment option for high blood pressure.
High Blood Pressure Drugs
View list of generic and brand names of drugs used for treatment of High Blood Pressure.
Diet and High Blood Pressure
High blood pressure or hypertension is defined as a blood pressure of above 140 mm Hg (systolic) and or 90mm Hg (diastolic).
How to Measure Blood Pressure - Animation
Animation to understand what is blood pressure and how to measure systolic and diastolic readings of blood pressure. High or low blood pressure can be a risk factor for many chronic diseases.
Blood Pressure Screening
Hypertension accounts for nearly 6% deaths worldwide.

Consult Cardiologists Online

Dr. Atul Prabhu
Dr. Atul Prabhu
MBBS, MD, FNB
15 years experience
View Profile
Dr. Mira Govindarajan
Dr. Mira Govindarajan
MBBS, MD, MHA
18 years experience
View Profile
Dr. Sowmya Dath
Dr. Sowmya Dath
MBBS, PGDCC, CCEBDM
15 years experience
Life Care Clinic, Near Mission hospital
View Profile
Dr. Manish Jain
Dr. Manish Jain
MBBS, Diploma in Cardiology, MRCP, Fellowship in Cardic Imaging
18 years experience
View Profile

View All Cardiologists

Advertisement
Advertisement
Health Calculators A-Z

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Cardiac Tools
View all
Advertisement
Advertisement

Get Health and Wellness Secrets from Our Engaging eBooks
Advertisement

This site uses cookies to deliver our services.By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use  Ok, Got it. Close