READING LOOKUP

Blood pressure 123 over 50 to 108

A top number of 123 is in the Elevated range. The bottom number decides the rest: under 80 stays Elevated, 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.

123 over what? The quick answer

123/50 to 79: Elevated
123/80 to 89: Stage 1 hypertension
123/90 to 108: Stage 2 hypertension

Every 123 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
123/50	Elevated	73	74.3
123/51	Elevated	72	75
123/52	Elevated	71	75.7
123/53	Elevated	70	76.3
123/54	Elevated	69	77
123/55	Elevated	68	77.7
123/56	Elevated	67	78.3
123/57	Elevated	66	79
123/58	Elevated	65	79.7
123/59	Elevated	64	80.3
123/60	Elevated	63	81
123/61	Elevated	62	81.7
123/62	Elevated	61	82.3
123/63	Elevated	60	83
123/64	Elevated	59	83.7
123/65	Elevated	58	84.3
123/66	Elevated	57	85
123/67	Elevated	56	85.7
123/68	Elevated	55	86.3
123/69	Elevated	54	87
123/70	Elevated	53	87.7
123/71	Elevated	52	88.3
123/72	Elevated	51	89
123/73	Elevated	50	89.7
123/74	Elevated	49	90.3
123/75	Elevated	48	91
123/76	Elevated	47	91.7
123/77	Elevated	46	92.3
123/78	Elevated	45	93
123/79	Elevated	44	93.7
123/80	Stage 1	43	94.3
123/81	Stage 1	42	95
123/82	Stage 1	41	95.7
123/83	Stage 1	40	96.3
123/84	Stage 1	39	97
123/85	Stage 1	38	97.7
123/86	Stage 1	37	98.3
123/87	Stage 1	36	99
123/88	Stage 1	35	99.7
123/89	Stage 1	34	100.3
123/90	Stage 2	33	101
123/91	Stage 2	32	101.7
123/92	Stage 2	31	102.3
123/93	Stage 2	30	103
123/94	Stage 2	29	103.7
123/95	Stage 2	28	104.3
123/96	Stage 2	27	105
123/97	Stage 2	26	105.7
123/98	Stage 2	25	106.3
123/99	Stage 2	24	107
123/100	Stage 2	23	107.7
123/101	Stage 2	22	108.3
123/102	Stage 2	21	109
123/103	Stage 2	20	109.7
123/104	Stage 2	19	110.3
123/105	Stage 2	18	111
123/106	Stage 2	17	111.7
123/107	Stage 2	16	112.3
123/108	Stage 2	15	113

What to do with a 123 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 123/70 high blood pressure?

123/70 is in the Elevated range of the 2025 ACC/AHA chart, with a top number of 120 to 129 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 123/80 high blood pressure?

123/80 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 123/90 high blood pressure?

123/90 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 123/80?

About 94.3 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 80 + 43/3. The pulse pressure is 43.

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