READING LOOKUP

Blood pressure 91 over 50 to 76

A top number of 91 is in the Normal range. The bottom number decides the rest: under 80 stays Normal, 80 to 89 is Stage 1, and 90 or higher is Stage 2.

Reviewed by Kaustubh Dabhadkar, MD, MPH, FACC, board-certified cardiologist. Categories follow the 2025 ACC/AHA guideline for adults.

91 over what? The quick answer

91/50 to 76: Normal

Every 91 reading

Pulse pressure is the top number minus the bottom number. MAP (mean arterial pressure) is the bottom number plus a third of the pulse pressure.

Reading	Category	Pulse pressure	MAP
91/50	Normal	41	63.7
91/51	Normal	40	64.3
91/52	Normal	39	65
91/53	Normal	38	65.7
91/54	Normal	37	66.3
91/55	Normal	36	67
91/56	Normal	35	67.7
91/57	Normal	34	68.3
91/58	Normal	33	69
91/59	Normal	32	69.7
91/60	Normal	31	70.3
91/61	Normal	30	71
91/62	Normal	29	71.7
91/63	Normal	28	72.3
91/64	Normal	27	73
91/65	Normal	26	73.7
91/66	Normal	25	74.3
91/67	Normal	24	75
91/68	Normal	23	75.7
91/69	Normal	22	76.3
91/70	Normal	21	77
91/71	Normal	20	77.7
91/72	Normal	19	78.3
91/73	Normal	18	79
91/74	Normal	17	79.7
91/75	Normal	16	80.3
91/76	Normal	15	81

What to do with a 91 reading

Keep checking now and then, the same way each time. Your category comes from the average of many home readings, so one number tells you less than a week of them.

With a bottom number of 80 or higher, the reading is at or above 130/80. In that case: sit quietly for 5 minutes and take two readings a minute apart. If home readings average in this range over a week, share them with your doctor, who will look at them alongside your overall heart risk.

Readings move from minute to minute, and the first one usually runs a few points higher. The home measuring guide covers how to get a reading you can trust, and the 7-day home average turns a week of readings into the number your doctor uses. To check any reading, use the category checker.

Common questions

Is 91/70 high blood pressure?

91/70 is in the Normal range of the 2025 ACC/AHA chart, with a top number under 120 and a bottom number under 80. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

What is the MAP of 91/76?

About 81 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 76 + 15/3. The pulse pressure is 15.

This page is educational and does not provide medical advice, diagnosis, or treatment. Categories describe numbers for adults; they are not a diagnosis, and they are not a substitute for care from your own doctor.

SOURCES

Jones DW, et al. 2025 AHA/ACC/AANP/AAPA/ABC/ACCP/ACPM/AGS/AMA/ASPC/NMA/PCNA/SGIM Guideline for the Prevention, Detection, Evaluation and Management of High Blood Pressure in Adults (Circulation, 2025): Blood pressure categories (normal under 120/80, elevated 120 to 129 and under 80, stage 1 130 to 139 or 80 to 89, stage 2 140 or 90 and higher); the higher category counts when the two numbers disagree; severe hypertension above 180/120; PREVENT for risk estimation
Understanding Blood Pressure Readings (American Heart Association, reviewed August 14, 2025): Category chart for adults; severe hypertension and hypertensive emergency rows; call 911 above 180/120 with symptoms

Track this automatically with BP Log.

The free iPhone app times two readings a minute apart, averages them, keeps your morning and evening numbers apart, and builds a report for your doctor.

Other ways to track: printable log now, desktop and Excel coming soon