Systolic / diastolic, adjusted for age. Based on American Heart Association (AHA) criteria.
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Low (hypotension)< 90 / < 60
Normal< 120 / < 80
Elevated120–129 / < 80
Hypertension Stage 1130–139 / 80–89
Hypertension Stage 2140–179 / 90–119
Hypertensive crisis≥ 180 / ≥ 120
A rough estimate using general adult (18+) criteria — sex does not change the category. Children and teens have different, height-dependent norms — this calculator isn't for them. A single reading isn't a diagnosis: if readings stay high or low, or you feel dizzy or have chest pain, see a doctor. At ≥180/120 with symptoms (chest pain, shortness of breath, vision or speech problems), that's an emergency — call emergency services.