Blood Pressure Chart
Know your numbers. Enter your systolic and diastolic readings to instantly see if your blood pressure is Normal, Elevated, or in the Hypertension range based on AHA guidelines.
Normal
Below 120/80
Elevated
Early warning
Stage 1
Hypertension
Crisis
Emergency care
Decoding Blood Pressure
Blood pressure is the force of blood pushing against the walls of your arteries. It is measured using two numbers.
Systolic vs. Diastolic
Systolic (Top Number): Measures the pressure in your arteries when your heart beats.
Diastolic (Bottom Number): Measures the pressure in your arteries when your heart rests between beats.
The Silent Killer
High blood pressure (Hypertension) often has no symptoms but damages your arteries, heart, and kidneys over time.
Updated Guidelines
In 2017, the AHA updated the guidelines. Readings previously considered "Pre-hypertension" are now classified as "Elevated" or "Stage 1".
Why Check at Home?
"White Coat Syndrome" can cause higher readings at the doctor's office due to anxiety. Home monitoring provides a more accurate picture.
AHA Standards
We use the latest official categories from the American Heart Association.
Color Coded
Instantly see if you are in the Green (Safe), Yellow (Warning), or Red (Danger) zone.
Action Steps
We provide specific advice for each category, from lifestyle changes to seeking emergency care.
Why Use Our Tool?
Quick Diagnosis
Don't guess what "135 over 85" means. Get an instant category assessment.
Emergency Alert
Our tool specifically flags Hypertensive Crisis levels, alerting you to seek immediate medical attention.
Educational
Learn about the risks and prevention strategies associated with your specific numbers.
How to Measure Accurately
Get reliable readings at home.
Prepare
Avoid caffeine, smoking, or exercise for 30 minutes before measuring. Empty your bladder.
Position
Sit quietly for 5 minutes. Keep feet flat on the floor and your back supported. Rest your arm on a table at heart level.
Measure & Enter
Take the reading. Enter the top (systolic) and bottom (diastolic) numbers into the calculator below.
Understanding Systolic & Diastolic
Blood pressure is written as two numbers (e.g., 120/80 mm Hg). Here is what they mean.
Systolic (Top Number)
This measures the pressure in your arteries when your heart beats (squeezes).
- It is always the higher number.
- It rises with age due to stiffening arteries.
- It is a major risk factor for cardiovascular disease in people over 50.
Diastolic (Bottom Number)
This measures the pressure in your arteries when your heart rests between beats.
- It is always the lower number.
- It indicates how much resistance is in your blood vessels.
- High diastolic pressure is common in younger people.
How to Measure Correctly
Check Your BP Category
Enter your numbers.
Decoding the Stages
The American Heart Association categorizes blood pressure into 5 levels. Knowing where you stand is the first step to control.
Your numbers are healthy! Stick to your current lifestyle habits (balanced diet and exercise) to maintain this range.
You are at risk. People with elevated BP are likely to develop high blood pressure unless steps are taken to control the condition immediately.
This is Hypertension. Doctors usually prescribe lifestyle changes and may consider adding blood pressure medication based on your risk of atherosclerotic cardiovascular disease (ASCVD).
This is serious. Doctors will prescribe a combination of blood pressure medications and lifestyle changes. Regular monitoring is essential.
MEDICAL EMERGENCY. Wait 5 minutes and test again. If still high, contact your doctor immediately. If you have chest pain, shortness of breath, or difficulty speaking, call 911.
AHA Blood Pressure Categories
Management & Prevention
High blood pressure is a lifelong condition, but it can be managed.
DASH Diet
The "Dietary Approaches to Stop Hypertension" (DASH) diet focuses on fruits, vegetables, whole grains, and lean protein while reducing sodium. It is proven to lower BP.
Stress Management
Chronic stress constricts blood vessels. Regular meditation, breathing exercises, and sleep can have a tangible effect on lowering your numbers.
Impact & Solutions
Why you need to lower it, and how to do it naturally.
Why it matters
High blood pressure forces your heart to work harder to pump blood. Over time, this force damages the delicate tissues inside your arteries.
Stroke Risk
High BP can cause blood vessels in the brain to clog or burst.
Vision Loss
It strains the vessels in the eyes, potentially leading to blindness.
Kidney Failure
It is the second leading cause of kidney failure in the world.
Pro Tips: How to Lower It
Reduce Sodium
Limit salt to under 1,500mg per day. Avoid processed foods and canned soups.
Increase Potassium
Potassium helps kidneys flush sodium. Eat bananas, spinach, and sweet potatoes.
30 Mins Cardio
Regular physical activity makes your heart stronger so it can pump blood with less effort.
Limit Alcohol
Alcohol raises blood pressure. Limit to 1 drink/day for women, 2 for men.
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Frequently Asked Questions
What if my numbers are in different categories?
If your systolic (top) and diastolic (bottom) fall into two different risk categories, you should consider yourself in the higher category for safety.
Does BP change during the day?
Yes. It is usually lower while sleeping and rises when you wake up. It spikes during exercise or stress. This is why consistent measurement times (e.g., morning) are best.
What is "Low Blood Pressure"?
Generally, readings lower than 90/60 are considered hypotension. It is usually not a problem unless it causes dizziness, fainting, or fatigue.
Can I lower BP without medication?
In early stages (Elevated/Stage 1), lifestyle changes like losing weight, reducing sodium, and exercising can often return BP to normal ranges without drugs.