READING LOOKUP

Blood pressure 109 over 50 to 94

A top number of 109 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.

109 over what? The quick answer

109/50 to 79: Normal
109/80 to 89: Stage 1 hypertension
109/90 to 94: Stage 2 hypertension

Every 109 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
109/50	Normal	59	69.7
109/51	Normal	58	70.3
109/52	Normal	57	71
109/53	Normal	56	71.7
109/54	Normal	55	72.3
109/55	Normal	54	73
109/56	Normal	53	73.7
109/57	Normal	52	74.3
109/58	Normal	51	75
109/59	Normal	50	75.7
109/60	Normal	49	76.3
109/61	Normal	48	77
109/62	Normal	47	77.7
109/63	Normal	46	78.3
109/64	Normal	45	79
109/65	Normal	44	79.7
109/66	Normal	43	80.3
109/67	Normal	42	81
109/68	Normal	41	81.7
109/69	Normal	40	82.3
109/70	Normal	39	83
109/71	Normal	38	83.7
109/72	Normal	37	84.3
109/73	Normal	36	85
109/74	Normal	35	85.7
109/75	Normal	34	86.3
109/76	Normal	33	87
109/77	Normal	32	87.7
109/78	Normal	31	88.3
109/79	Normal	30	89
109/80	Stage 1	29	89.7
109/81	Stage 1	28	90.3
109/82	Stage 1	27	91
109/83	Stage 1	26	91.7
109/84	Stage 1	25	92.3
109/85	Stage 1	24	93
109/86	Stage 1	23	93.7
109/87	Stage 1	22	94.3
109/88	Stage 1	21	95
109/89	Stage 1	20	95.7
109/90	Stage 2	19	96.3
109/91	Stage 2	18	97
109/92	Stage 2	17	97.7
109/93	Stage 2	16	98.3
109/94	Stage 2	15	99

What to do with a 109 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 109/70 high blood pressure?

109/70 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 109/80 high blood pressure?

109/80 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 109/90 high blood pressure?

109/90 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 109/80?

About 89.7 mmHg. Mean arterial pressure is the bottom number plus a third of the pulse pressure: 80 + 29/3. The pulse pressure is 29.

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