READING LOOKUP

Blood pressure 133 over 50 to 110

A top number of 133 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.

133 over what? The quick answer

133/50 to 89: Stage 1 hypertension
133/90 to 110: Stage 2 hypertension

Every 133 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
133/50	Stage 1	83	77.7
133/51	Stage 1	82	78.3
133/52	Stage 1	81	79
133/53	Stage 1	80	79.7
133/54	Stage 1	79	80.3
133/55	Stage 1	78	81
133/56	Stage 1	77	81.7
133/57	Stage 1	76	82.3
133/58	Stage 1	75	83
133/59	Stage 1	74	83.7
133/60	Stage 1	73	84.3
133/61	Stage 1	72	85
133/62	Stage 1	71	85.7
133/63	Stage 1	70	86.3
133/64	Stage 1	69	87
133/65	Stage 1	68	87.7
133/66	Stage 1	67	88.3
133/67	Stage 1	66	89
133/68	Stage 1	65	89.7
133/69	Stage 1	64	90.3
133/70	Stage 1	63	91
133/71	Stage 1	62	91.7
133/72	Stage 1	61	92.3
133/73	Stage 1	60	93
133/74	Stage 1	59	93.7
133/75	Stage 1	58	94.3
133/76	Stage 1	57	95
133/77	Stage 1	56	95.7
133/78	Stage 1	55	96.3
133/79	Stage 1	54	97
133/80	Stage 1	53	97.7
133/81	Stage 1	52	98.3
133/82	Stage 1	51	99
133/83	Stage 1	50	99.7
133/84	Stage 1	49	100.3
133/85	Stage 1	48	101
133/86	Stage 1	47	101.7
133/87	Stage 1	46	102.3
133/88	Stage 1	45	103
133/89	Stage 1	44	103.7
133/90	Stage 2	43	104.3
133/91	Stage 2	42	105
133/92	Stage 2	41	105.7
133/93	Stage 2	40	106.3
133/94	Stage 2	39	107
133/95	Stage 2	38	107.7
133/96	Stage 2	37	108.3
133/97	Stage 2	36	109
133/98	Stage 2	35	109.7
133/99	Stage 2	34	110.3
133/100	Stage 2	33	111
133/101	Stage 2	32	111.7
133/102	Stage 2	31	112.3
133/103	Stage 2	30	113
133/104	Stage 2	29	113.7
133/105	Stage 2	28	114.3
133/106	Stage 2	27	115
133/107	Stage 2	26	115.7
133/108	Stage 2	25	116.3
133/109	Stage 2	24	117
133/110	Stage 2	23	117.7

What to do with a 133 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 133/70 high blood pressure?

133/70 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 133/80 high blood pressure?

133/80 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 133/90 high blood pressure?

133/90 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 133/80?

About 97.7 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 80 + 53/3. The pulse pressure is 53.

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