Stage 1 hypertension is 130 to 139 systolic or 80 to 89 diastolic; stage 2 is 140 or higher systolic or 90 or higher diastolic.
Below stage 1: normal is under 120/80 and elevated is 120 to 129 with diastolic under 80. Above stage 2: over 180 or over 120 is a hypertensive crisis needing immediate care. The higher number always wins; one high component is enough to classify you. The stages drive different first moves. Stage 1 usually starts with lifestyle change, with medication added if your overall cardiovascular risk is raised by things like diabetes, kidney disease, or prior heart events. Stage 2 typically starts medication plus lifestyle change immediately, because stroke and heart attack risk climbs steeply from there. Diagnosis is never one reading: it takes repeated measurements on separate days, ideally with home monitoring to filter out white-coat spikes. If you are near a boundary, two weeks of morning and evening home readings give your clinician far better data than any single office measurement.
What to do
Common questions
What is stage 1 vs stage 2 hypertension?
The two stages come from the ACC/AHA blood pressure categories, and the cutoff between them is 140/90. The full ladder: normal is under 120 and under 80. Elevated is 120 to 129 with diastolic under 80. Stage 1 hypertension is 130 to 139 systolic or 80 to 89 diastolic. Stage 2 is 140 or higher systolic or 90 or higher diastolic, and either number can put you in the higher stage on its own. Above that sits hypertensive crisis: over 180 or over 120, which needs immediate medical care. What the stages mean practically: stage 1 is usually managed first with lifestyle changes (salt reduction, weight, exercise, alcohol limits), with medication added depending on your overall cardiovascular risk, like whether you have diabetes, kidney disease, or existing heart disease. Stage 2 generally means starting medication alongside lifestyle change, because the risk of stroke and heart attack climbs meaningfully at those levels. One reading never makes the diagnosis: hypertension is confirmed with repeated measurements on different days, ideally including home readings, since white-coat effects are common. If your numbers are borderline, a week or two of proper home readings is the most useful thing you can bring to your appointment.