Blood pressure is written as two numbers. The higher number (systolic) is pressure when the heart pumps; the lower number (diastolic) is pressure between beats.

ReadingWhat it may mean
Around 120/80Often considered a healthy adult target
130–139 / 80–89Discuss lifestyle and follow-up with your clinician
180/120 or higher with symptomsSeek urgent care

Home monitors help, but a clinic check confirms the reading and looks for related risks such as diabetes or kidney disease.