Blood Pressure Category Checker

Look up your category from systolic / diastolic readings

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Systolic OFF

Diastolic OFF

Category OFF

Disclaimer ON

Input Validation

Checks that both fields contain valid numbers within physiologically plausible ranges.

Check	Rule
Presence	Both fields required
Numeric	Must be valid numbers
Systolic range	60 – 300 mmHg
Diastolic range	30 – 200 mmHg

Systolic Check

The top number — pressure when the heart beats. Compared against AHA thresholds to determine category.

Category	Systolic (mmHg)
Normal	< 120
Elevated	120 – 129
Stage 1 HTN	130 – 139
Stage 2 HTN	≥ 140
Crisis	≥ 180

Diastolic Check

The bottom number — pressure between beats. Used alongside systolic for final classification.

Category	Diastolic (mmHg)
Normal	< 80
Elevated	< 80
Stage 1 HTN	80 – 89
Stage 2 HTN	≥ 90
Crisis	≥ 120

Category Logic

Classification follows the 2017 AHA/ACC guidelines. The higher-severity category of systolic or diastolic wins.

Category	Systolic	Diastolic
Normal	< 120	AND < 80
Elevated	120 – 129	AND < 80
Stage 1 HTN	130 – 139	OR 80 – 89
Stage 2 HTN	≥ 140	OR ≥ 90
Crisis	≥ 180	OR ≥ 120

Disclaimer

This tool is informational only and does not constitute medical advice, diagnosis, or treatment. Blood pressure categories are based on the 2017 AHA/ACC guidelines. Consult a qualified healthcare professional for medical decisions.

Systolic (mmHg) Top number

Diastolic (mmHg) Bottom number

AHA Reference

Category	Systolic		Diastolic
Normal	< 120	and	< 80
Elevated	120 – 129	and	< 80
Stage 1 HTN	130 – 139	or	80 – 89
Stage 2 HTN	≥ 140	or	≥ 90
Hypertensive Crisis	≥ 180	and/or	≥ 120

Disclaimer: This tool is for informational purposes only. It is not a diagnostic tool. Always consult a healthcare professional for medical advice. Based on 2017 AHA/ACC Blood Pressure Guidelines.