READING LOOKUP

Blood pressure 131 over 50 to 110

A top number of 131 is in the Stage 1 range on its own. A bottom number of 90 or higher moves the reading up to Stage 2.

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

131 over what? The quick answer

131/50 to 89: Stage 1 hypertension
131/90 to 110: Stage 2 hypertension

Every 131 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
131/50	Stage 1	81	77
131/51	Stage 1	80	77.7
131/52	Stage 1	79	78.3
131/53	Stage 1	78	79
131/54	Stage 1	77	79.7
131/55	Stage 1	76	80.3
131/56	Stage 1	75	81
131/57	Stage 1	74	81.7
131/58	Stage 1	73	82.3
131/59	Stage 1	72	83
131/60	Stage 1	71	83.7
131/61	Stage 1	70	84.3
131/62	Stage 1	69	85
131/63	Stage 1	68	85.7
131/64	Stage 1	67	86.3
131/65	Stage 1	66	87
131/66	Stage 1	65	87.7
131/67	Stage 1	64	88.3
131/68	Stage 1	63	89
131/69	Stage 1	62	89.7
131/70	Stage 1	61	90.3
131/71	Stage 1	60	91
131/72	Stage 1	59	91.7
131/73	Stage 1	58	92.3
131/74	Stage 1	57	93
131/75	Stage 1	56	93.7
131/76	Stage 1	55	94.3
131/77	Stage 1	54	95
131/78	Stage 1	53	95.7
131/79	Stage 1	52	96.3
131/80	Stage 1	51	97
131/81	Stage 1	50	97.7
131/82	Stage 1	49	98.3
131/83	Stage 1	48	99
131/84	Stage 1	47	99.7
131/85	Stage 1	46	100.3
131/86	Stage 1	45	101
131/87	Stage 1	44	101.7
131/88	Stage 1	43	102.3
131/89	Stage 1	42	103
131/90	Stage 2	41	103.7
131/91	Stage 2	40	104.3
131/92	Stage 2	39	105
131/93	Stage 2	38	105.7
131/94	Stage 2	37	106.3
131/95	Stage 2	36	107
131/96	Stage 2	35	107.7
131/97	Stage 2	34	108.3
131/98	Stage 2	33	109
131/99	Stage 2	32	109.7
131/100	Stage 2	31	110.3
131/101	Stage 2	30	111
131/102	Stage 2	29	111.7
131/103	Stage 2	28	112.3
131/104	Stage 2	27	113
131/105	Stage 2	26	113.7
131/106	Stage 2	25	114.3
131/107	Stage 2	24	115
131/108	Stage 2	23	115.7
131/109	Stage 2	22	116.3
131/110	Stage 2	21	117

What to do with a 131 reading

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 131/70 high blood pressure?

131/70 is in the Stage 1 hypertension range of the 2025 ACC/AHA chart, because the top number is 130 to 139. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

Is 131/80 high blood pressure?

131/80 is in the Stage 1 hypertension range of the 2025 ACC/AHA chart, because the top number is 130 to 139. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

Is 131/90 high blood pressure?

131/90 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 131/80?

About 97 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 80 + 51/3. The pulse pressure is 51.

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