Blood Pressure 123 Over 40–111: Which Are OK?
With an upper value of 123, the answer depends on your lower number. Here are all readings, sorted by what they mean.
On its own, a systolic (upper) value of 123 mmHg is Normal by the international categories (2023 ESH guideline) and Elevated under the 2025 AHA/ACC guideline. The worse of your two numbers decides the category, so a raised diastolic (lower) value moves a 123 reading up: from 123/85 it counts as high normal, from 123/90 it counts as stage 1, from 123/100 it counts as stage 2, from 123/110 it counts as stage 3. Readings below 123/63 have a pulse pressure above 60 mmHg — a wide gap that is common after 60 and worth mentioning to your doctor.
Normal 123/40 to 123/84
- 123/40 ↓
- 123/41 ↓
- 123/42 ↓
- 123/43 ↓
- 123/44 ↓
- 123/45 ↓
- 123/46 ↓
- 123/47 ↓
- 123/48 ↓
- 123/49 ↓
- 123/50
- 123/51
- 123/52
- 123/53
- 123/54
- 123/55
- 123/56
- 123/57
- 123/58
- 123/59
- 123/60
- 123/61
- 123/62
- 123/63
- 123/64
- 123/65
- 123/66
- 123/67
- 123/68
- 123/69
- 123/70
- 123/71
- 123/72
- 123/73
- 123/74
- 123/75
- 123/76
- 123/77
- 123/78
- 123/79
- 123/80
- 123/81
- 123/82
- 123/83
- 123/84
↓ = the lower number is below 50: these readings count as normal by the upper number, but the low lower number needs checking — see each page.
Hypertension stage 1 123/90 to 123/99
Hypertension stage 2 123/100 to 123/109
What to do with a reading of 123 over …
Normal internationally, though above the ideal of under 120 (the US calls it elevated). Re-check once or twice a year and keep an eye on salt, weight and exercise. From 123/110 the lower number makes it stage 3: sit quietly for 5 minutes and measure again; if it stays at 110 or higher, contact a doctor the same day, and call 911 (US) or your local emergency number with chest pain, shortness of breath, back pain, numbness or weakness, vision or speech problems, confusion or a severe headache. A lower number below 50 (from 123/49 down) is clearly low: measure again, and if it is confirmed or you feel dizzy, faint or confused, contact a doctor the same day. Keep your readings in a free blood pressure log and read how to measure correctly.
Sources: ESH 2023 guideline · AHA/ACC 2025 guideline.