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Lookup 1 — Check my reading
Your two numbers → the AHA category and what to do.
REFERENCE TABLE · HEALTH · PRINTABLE
Blood Pressure Chart: What Your Reading Means
Two numbers, five categories, and one rule that decides everything: when the top and bottom numbers disagree, the higher category wins. The chart below follows the American Heart Association / American College of Cardiology categories (2017, reaffirmed in the 2025 guideline): normal is under 120/80, hypertension starts at 130/80. At the defaults — 118/76 — the reading is normal, with a 42 mmHg pulse pressure and a 90.0 mmHg mean arterial pressure. Below: the full category chart, three live lookups — check your reading, pulse pressure, and MAP — plus what each category asks you to do. The tables print cleanly: keep one near the home monitor.
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Lookup 2 — Pulse pressure
Systolic minus diastolic → how hard each beat lands.
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Lookup 3 — Mean arterial pressure
The average pressure your organs actually feel.
The full chart: AHA blood pressure categories
Categories from the American Heart Association / American College of Cardiology guideline (2017; thresholds reaffirmed in the 2025 update). Readings are in mmHg — millimeters of mercury. Printing? Use your browser’s print command — the table below is formatted for paper.
| Category | Systolic (top number) | Diastolic (bottom number) | What to do |
|---|---|---|---|
| Normal | Less than 120 | and less than 80 | Keep it up — healthy weight, regular movement, limited sodium and alcohol. Recheck at least yearly. |
| Elevated | 120–129 | and less than 80 | The yellow light — no medication for most people yet. Lifestyle changes now, recheck in 3–6 months. |
| Stage 1 hypertension | 130–139 | or 80–89 | See your clinician. Lifestyle is the foundation; the 2025 guideline adds medication with heart disease, diabetes, kidney disease, or ≥7.5% 10-year cardiovascular risk. |
| Stage 2 hypertension | 140 or higher | or 90 or higher | See your clinician promptly. The 2025 guideline recommends starting two first-line medications (usually one combination pill) plus lifestyle — not lifestyle alone. |
| Hypertensive crisis | Higher than 180 | and/or higher than 120 | No symptoms: call your clinician promptly. With symptoms (chest pain, shortness of breath, back pain, numbness, weakness, vision change, trouble speaking): call 911 — that’s a hypertensive emergency. |
The “and/or” rule is the whole chart. Normal and elevated need both numbers in range (that’s the and). From stage 1 up, either number reaching the band puts you there (that’s the or) — a 128/84 is stage 1 on the diastolic alone, and a 145/79 is stage 2 on the systolic alone. When the two numbers fall in different categories, the higher one wins.
Pulse pressure: the gap between the numbers
Pulse pressure = systolic − diastolic. It’s how hard each heartbeat lands on your arteries — about 40 mmHg is typical:
| Pulse pressure | Reading | What it suggests |
|---|---|---|
| Under 25 | Narrow | May signal low stroke volume — worth discussing with a clinician, especially with dizziness or fatigue. |
| 25–60 | Typical | The normal operating range — about 40 is average. |
| Over 60 | Wide | Can signal arterial stiffness — common with age, and a known cardiovascular risk marker. Worth discussing with a clinician. |
Mean arterial pressure: what your organs feel
MAP = diastolic + (pulse pressure ÷ 3). Your organs don’t feel the systolic spike or the diastolic trough — they feel the average pressure across the heartbeat, which is what MAP estimates. Normal is 70–100 mmHg:
| MAP | Reading | What it suggests |
|---|---|---|
| Under 70 | Low | Organs may be under-perfused — seek care promptly if you feel faint, confused, or clammy. |
| 70–100 | Normal | Adequate perfusion pressure for the brain, heart, and kidneys. |
| Over 100 | High | A sustained pressure load on the system — talk to your clinician about the trend, not just one reading. |
Worked example: 118/76
Category: systolic 118 is under 120 and diastolic 76 is under 80 → normal. Pulse pressure: 118 − 76 = 42 mmHg — typical. MAP: 76 + (42 ÷ 3) = 90.0 mmHg — normal. 'Contrast 132/84: systolic 132 sits in the 130–139 band or diastolic 84 sits in the 80–89 band → stage 1, because the higher category wins on either number.
Home readings vs the doctor’s office
One high reading is not a diagnosis — hypertension is diagnosed from repeated measurements, and the AHA specifically recommends home monitoring with a validated upper-arm device (cuff sized to your arm, $50–100) to catch the two classic distortions: white-coat hypertension (high at the clinic, normal at home) and masked hypertension (normal at the clinic, high at home — the dangerous one). Wrist and finger cuffs are considered less reliable, and the AHA advises against relying on cuffless smartwatch readings until they prove out. Measure seated, back supported, feet flat, arm at heart level, after five quiet minutes — and bring the log to your clinician.
Output · formula · meaning
| Output | Formula | What it means |
|---|---|---|
| AHA category | higher of the systolic / diastolic bands | Normal at 118/76 — both numbers under the line. |
| Pulse pressure | systolic − diastolic | 42 mmHg at 118/76 — typical beat strength. |
| Mean arterial pressure | diastolic + pulse pressure ÷ 3 | 90.0 mmHg at 118/76 — normal perfusion. |
Who uses this
- Home-monitor users: translating the cuff’s two numbers into a category and an action, reading by reading.
- The newly “elevated”: a 124/78 lands here — this page is the 3-to-6-month lifestyle window, explained.
- Caregivers: checking an older parent’s readings — and knowing that over 180/120 with symptoms means 911, not wait-and-see.
- Students & educators: the AHA categories are standard health-literacy curriculum — cite them with the block below.
Accuracy & limitations
Categories follow the AHA/ACC adult guideline (2017; thresholds reaffirmed 2025) — they don’t apply to children, pregnancy (different thresholds), or readings taken during exercise, acute illness, or heavy caffeine. A single reading never diagnoses hypertension; clinicians use averages of repeated measurements, often including 24-hour ambulatory monitoring. Pulse pressure and MAP are interpretive aids, not diagnoses. If you take blood-pressure medication (beta blockers especially), discuss target ranges with your clinician rather than this chart. Not medical advice.
Cite this reference tableBright Side Kit. “Blood Pressure Chart: What Your Reading Means.” brightoolbox.com, 2026.
Bright Side Kit. "Blood Pressure Chart: What Your Reading Means." https://brightoolbox.com/blood-pressure-chart/ Accessed October 23, 2026.Frequently asked questions
What is a normal blood pressure reading?
Under 120/80 mmHg — systolic under 120 and diastolic under 80, per the American Heart Association. That’s the only category that needs both numbers in range. Anything at or above 130/80 is hypertension (stage 1), and 120–129 with a diastolic under 80 is the “elevated” warning zone.
Is the cutoff 120/80 or 130/80?
130/80. The AHA/ACC guideline moved the hypertension line from 140/90 to 130/80 in 2017 and reaffirmed it in the 2025 update — the change roughly tripled hypertension prevalence among men under 45, because vessel damage starts well before 140/90. Normal is still under 120/80; 120–129/<80 is “elevated”, not hypertension.
What do the top and bottom numbers mean?
The top (systolic) is the pressure when your heart contracts and pushes blood out — the surge. The bottom (diastolic) is the pressure between beats, when the heart rests and refills. Both matter: either one reaching a higher band moves your whole reading into that category.
What’s the difference between “elevated” and stage 1?
Elevated (120–129 and diastolic under 80) is the warning track — lifestyle changes and a recheck in 3–6 months, no medication for most people. Stage 1 (130–139 or 80–89) is hypertension proper: lifestyle plus a clinician visit, and medication for people with heart disease, diabetes, kidney disease, or elevated 10-year risk.
What should I do if my reading is over 180/120?
That’s the hypertensive crisis threshold. Without symptoms — no chest pain, shortness of breath, back pain, numbness, weakness, vision change, or trouble speaking — call your healthcare professional promptly. With any of those symptoms, call 911: that’s a hypertensive emergency, and waiting is the dangerous option.
Can one high reading mean I have hypertension?
No. Diagnosis needs repeated readings on different days — stress, caffeine, a rushed morning, or the clinic itself (white-coat hypertension) can spike a single number. The AHA recommends home monitoring with a validated upper-arm cuff and bringing the log to your clinician. The reverse trap — normal at the clinic, high at home (masked hypertension) — is why home readings matter.