READING LOOKUP

Blood pressure 115 over 50 to 100

A top number of 115 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.

115 over what? The quick answer

115/50 to 79: Normal
115/80 to 89: Stage 1 hypertension
115/90 to 100: Stage 2 hypertension

Every 115 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
115/50	Normal	65	71.7
115/51	Normal	64	72.3
115/52	Normal	63	73
115/53	Normal	62	73.7
115/54	Normal	61	74.3
115/55	Normal	60	75
115/56	Normal	59	75.7
115/57	Normal	58	76.3
115/58	Normal	57	77
115/59	Normal	56	77.7
115/60	Normal	55	78.3
115/61	Normal	54	79
115/62	Normal	53	79.7
115/63	Normal	52	80.3
115/64	Normal	51	81
115/65	Normal	50	81.7
115/66	Normal	49	82.3
115/67	Normal	48	83
115/68	Normal	47	83.7
115/69	Normal	46	84.3
115/70	Normal	45	85
115/71	Normal	44	85.7
115/72	Normal	43	86.3
115/73	Normal	42	87
115/74	Normal	41	87.7
115/75	Normal	40	88.3
115/76	Normal	39	89
115/77	Normal	38	89.7
115/78	Normal	37	90.3
115/79	Normal	36	91
115/80	Stage 1	35	91.7
115/81	Stage 1	34	92.3
115/82	Stage 1	33	93
115/83	Stage 1	32	93.7
115/84	Stage 1	31	94.3
115/85	Stage 1	30	95
115/86	Stage 1	29	95.7
115/87	Stage 1	28	96.3
115/88	Stage 1	27	97
115/89	Stage 1	26	97.7
115/90	Stage 2	25	98.3
115/91	Stage 2	24	99
115/92	Stage 2	23	99.7
115/93	Stage 2	22	100.3
115/94	Stage 2	21	101
115/95	Stage 2	20	101.7
115/96	Stage 2	19	102.3
115/97	Stage 2	18	103
115/98	Stage 2	17	103.7
115/99	Stage 2	16	104.3
115/100	Stage 2	15	105

What to do with a 115 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 115/70 high blood pressure?

115/70 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.

Is 115/80 high blood pressure?

115/80 is in the Stage 1 hypertension range of the 2025 ACC/AHA chart, because the bottom number is 80 to 89. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

Is 115/90 high blood pressure?

115/90 is in the Stage 2 hypertension range of the 2025 ACC/AHA chart, because the bottom number is 90 or higher. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

What is the MAP of 115/80?

About 91.7 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 80 + 35/3. The pulse pressure is 35.

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