Terms of Use; About. Contact Us; About WebMD; Careers; Newsletter; Corporate; WebMD Health Services; Site Map; Accessibility; WebMD Network. Medscape; Medscape Reference; MedicineNet; eMedicineHealth; RxList; OnHealth; BootsWebMD; WebMDRx; First Aid; WebMD Magazine; WebMD Health Record; Dictionary; Physician Directory; Our Apps. WebMD Mobile; WebMD App; Pregnancy; Baby; Allergy; Medscape; TheHeart
Once you have your average blood pressure, the next step is to see where the numbers fall. Generally, anything under 120/80 is considered a good blood pressure. Average numbers between 120/80 and 139/89 are considered prehypertension.. If the average of your numbers is more than 140/90, you have high blood pressure.
The diastolic blood pressure number or the bottom number indicates the pressure in the arteries when the heart rests between beats. A normal diastolic blood pressure number is 80 or less. A diastolic blood pressure between 80 and 89 is normal but higher than ideal.A diastolic blood pressure number of 90 or higher, on repeated measurements, is considered to be hypertension or high blood pressure. normal systolic blood pressure is 120 or below. A systolic blood pressure of 120-139 means you have normal blood pressure that is higher than ideal, or borderline high blood pressure.