READING LOOKUP

Blood pressure 164 over 50 to 110

A top number of 164 is in the Stage 2 range on its own, so every 164 reading counts as Stage 2 whatever the bottom number.

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

164 over what? The quick answer

164/50 to 110: Stage 2 hypertension

Every 164 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
164/50	Stage 2	114	88
164/51	Stage 2	113	88.7
164/52	Stage 2	112	89.3
164/53	Stage 2	111	90
164/54	Stage 2	110	90.7
164/55	Stage 2	109	91.3
164/56	Stage 2	108	92
164/57	Stage 2	107	92.7
164/58	Stage 2	106	93.3
164/59	Stage 2	105	94
164/60	Stage 2	104	94.7
164/61	Stage 2	103	95.3
164/62	Stage 2	102	96
164/63	Stage 2	101	96.7
164/64	Stage 2	100	97.3
164/65	Stage 2	99	98
164/66	Stage 2	98	98.7
164/67	Stage 2	97	99.3
164/68	Stage 2	96	100
164/69	Stage 2	95	100.7
164/70	Stage 2	94	101.3
164/71	Stage 2	93	102
164/72	Stage 2	92	102.7
164/73	Stage 2	91	103.3
164/74	Stage 2	90	104
164/75	Stage 2	89	104.7
164/76	Stage 2	88	105.3
164/77	Stage 2	87	106
164/78	Stage 2	86	106.7
164/79	Stage 2	85	107.3
164/80	Stage 2	84	108
164/81	Stage 2	83	108.7
164/82	Stage 2	82	109.3
164/83	Stage 2	81	110
164/84	Stage 2	80	110.7
164/85	Stage 2	79	111.3
164/86	Stage 2	78	112
164/87	Stage 2	77	112.7
164/88	Stage 2	76	113.3
164/89	Stage 2	75	114
164/90	Stage 2	74	114.7
164/91	Stage 2	73	115.3
164/92	Stage 2	72	116
164/93	Stage 2	71	116.7
164/94	Stage 2	70	117.3
164/95	Stage 2	69	118
164/96	Stage 2	68	118.7
164/97	Stage 2	67	119.3
164/98	Stage 2	66	120
164/99	Stage 2	65	120.7
164/100	Stage 2	64	121.3
164/101	Stage 2	63	122
164/102	Stage 2	62	122.7
164/103	Stage 2	61	123.3
164/104	Stage 2	60	124
164/105	Stage 2	59	124.7
164/106	Stage 2	58	125.3
164/107	Stage 2	57	126
164/108	Stage 2	56	126.7
164/109	Stage 2	55	127.3
164/110	Stage 2	54	128

What to do with a 164 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 164/70 high blood pressure?

164/70 is in the Stage 2 hypertension range of the 2025 ACC/AHA chart, because the top number is 140 or higher. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

Is 164/80 high blood pressure?

164/80 is in the Stage 2 hypertension range of the 2025 ACC/AHA chart, because the top number is 140 or higher. One reading is a snapshot: the guideline places you by the average of readings taken on separate occasions.

Is 164/90 high blood pressure?

164/90 is in the Stage 2 hypertension range of the 2025 ACC/AHA chart, because the top number is 140 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 164/80?

About 108 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 80 + 84/3. The pulse pressure is 84.

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