What is the AHA 2017 blood pressure classification?

The American Heart Association 2017 guidelines define five categories: Normal (systolic = 140 OR diastolic >= 90), and Hypertensive Crisis (systolic >= 180 OR diastolic >= 120).

What is systolic blood pressure?

Systolic pressure is the top number in a reading. It measures the pressure in your arteries when your heart beats. A reading below 120 mmHg is considered normal.

What is diastolic blood pressure?

Diastolic pressure is the bottom number. It measures the pressure in your arteries between heartbeats. A reading below 80 mmHg is considered normal.

What is Hypertensive Crisis?

A Hypertensive Crisis occurs when systolic is 180 mmHg or higher, or diastolic is 120 mmHg or higher. This requires immediate medical attention. Contact emergency services if you also have symptoms such as chest pain, shortness of breath, or vision changes.

How many readings should I log?

Most healthcare providers recommend taking two to three readings at least one minute apart and averaging them. This tool calculates your session average automatically once you have logged two or more readings.

Blood Pressure Classifier

Name: Blood Pressure Classifier
Availability: InStock
Author: Nham Vu

Enter systolic and diastolic values to classify your blood pressure by AHA 2017 standards. Log up to 5+ readings and track your average and trend.

Blood Pressure Reading

Systolic (top number, mmHg)

Diastolic (bottom number, mmHg)

Note (optional)

AHA 2017 Reference Chart

Category	Sys.	Dia.
Normal	<120	<80
Elevated	120-129	<80
Stage 1	130-139	80-89
Stage 2	≥140	≥90
Crisis	≥180	≥120

Enter systolic and diastolic values, then click Classify or Add Reading.

Log 3 or more readings to see your average and trend.

—

— / —

—

Reading Log

#	Sys.	Dia.	Category	Note

Medical Disclaimer: This tool is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Classifications follow AHA 2017 guidelines. Always consult a qualified healthcare provider about your blood pressure and any related symptoms.

Done!

Summary

Enter systolic and diastolic values to classify your blood pressure by AHA 2017 standards. Log up to 5+ readings and track your average and trend.

How it works

Enter your systolic (top) blood pressure value.
Enter your diastolic (bottom) blood pressure value.
Click "Add Reading" to log the entry to your session.
Click "Classify" to see the AHA category for the current values.
Add 3 or more readings to see your average and trend (improving or worsening).

Use cases

Quickly classify a blood pressure reading against AHA 2017 guidelines.
Log multiple home blood pressure readings in one session.
Track whether your blood pressure trend is improving or worsening.
Share a color-coded summary with your healthcare provider.

Frequently Asked Questions

Last updated: 2026-06-09 · Reviewed by Nham Vu