See where a reading falls against standard AHA-published categories.
| Category | Systolic | Diastolic |
|---|---|---|
| Normal | Below 120 | and Below 80 |
| Elevated | 120 – 129 | and Below 80 |
| Hypertension Stage 1 | 130 – 139 | or 80 – 89 |
| Hypertension Stage 2 | 140 or higher | or 90 or higher |
| Hypertensive Crisis | Above 180 | and/or Above 120 |
This categorizes a single reading against general published guidelines — it is not a diagnosis. Blood pressure varies throughout the day; take multiple readings at different times and consult a doctor for proper evaluation, especially for readings in the higher categories.
This is a general estimate based on standard published formulas, not a medical assessment — it doesn’t account for your individual health history. Results are informational only and aren’t a substitute for advice from a doctor or qualified professional. Read the full disclaimer.
This tool does exactly one thing: it compares a single reading against publicly documented threshold ranges. It cannot know your medical history, whether the reading was taken correctly, or what a pattern of readings over time actually means for you — that interpretation belongs to a doctor, not a calculator.
No. This categorizes a single reading against general published guidelines — it is not a diagnosis and cannot account for your medical history, medications, or how the reading was taken. Blood pressure also varies throughout the day, so a single elevated reading isn't the same as a diagnosis of hypertension. Consult a doctor for a proper evaluation, especially for readings in the higher categories.
Under the current AHA guidelines, normal is systolic below 120 and diastolic below 80. Readings above that move through Elevated, Hypertension Stage 1, Stage 2, and Hypertensive Crisis, each defined by specific systolic/diastolic thresholds.
Take another reading after resting a few minutes, and if it's consistently elevated across multiple readings on different days, talk to a doctor. A single high reading can be caused by many temporary factors (caffeine, stress, recent activity) and isn't by itself cause for alarm — but a consistent pattern is worth having evaluated.
Yes, completely free, with no account — nothing you enter here is stored or sent anywhere.
