Blood Pressure Chart: Every Category Explained

Two major clinical bodies define blood pressure categories a little differently. The American Heart Association and American College of Cardiology (AHA/ACC 2025) use four bands anchored at a diastolic of 80, while the European Society of Cardiology (ESC 2024) uses three bands anchored at a diastolic of 70. Both agree that hypertension starts at 140 systolic or 90 diastolic, and both treat systolic over 180 or diastolic over 120 as a same-day emergency.

Both tables below come directly from the two guidelines, reproduced without rounding or blending. If you've ever seen two different sources categorize the same reading two different ways, the reason is almost always that one used AHA/ACC 2025 and the other used ESC 2024 — not that either source made an error.

The AHA/ACC 2025 Blood Pressure Chart (U.S. Standard)

This is the chart most commonly cited in the United States. It splits readings into four categories:

Notice that Elevated is triggered by the systolic number alone. If diastolic reaches 80, the reading is Stage 1 even when systolic is still in the 120–129 range — a detail that's easy to miss when skimming the table.

The ESC 2024 Blood Pressure Chart (European Standard)

The European Society of Cardiology's 2024 guideline groups readings into three categories instead of four, and it is always named explicitly as "European Society of Cardiology (ESC) 2024" rather than presented as a generic local standard:

Two differences stand out. First, the ESC diastolic axis starts at 70, not 80 as in the AHA/ACC chart. Second, ESC's Elevated category is triggered symmetrically from either axis — systolic or diastolic — rather than by systolic alone.

ESC also collapses what AHA/ACC calls Stage 1 and Stage 2 into a single Hypertension category. There's no ESC equivalent of a "Stage 1" label — once a reading reaches 140 systolic or 90 diastolic, it's simply Hypertension under this standard, whether it's just over that line or much higher. Everything below that line, but above Non-elevated, is grouped together as Elevated.

Where the Two Charts Disagree

Because the diastolic axes start in different places, the same reading can land in different categories depending on which chart is used:

• A reading of 118/76 is Normal under AHA/ACC 2025 (systolic under 120, diastolic under 80), but Elevated under ESC 2024, because its diastolic axis starts at 70 rather than 80.
• A reading of 122/82 is Hypertension Stage 1 under AHA/ACC 2025 (diastolic 80–89 triggers it, regardless of the systolic number), but only Elevated under ESC 2024 (diastolic 70–89 sits in that band, and hypertension there doesn't start until 90).
• A reading of 138/88 is Hypertension Stage 1 under AHA/ACC 2025, but still just Elevated under ESC 2024, since neither axis has reached ESC's Hypertension line of 140 or 90.

Neither chart is more "correct" than the other — they're two different clinical guidelines, developed by two different organizations, and your own clinician will typically tell you which one they use. A single reading cannot diagnose hypertension under either standard; both rely on a pattern of repeated, correctly taken measurements.

The Emergency Threshold (Same in Both Standards)

Regardless of which chart you use, one number sits outside both classification systems: systolic over 180 or diastolic over 120. Both AHA/ACC and ESC guidance treat this as a signal for immediate medical attention rather than a category to sit with and monitor. If you or someone near you gets a reading like this — particularly alongside symptoms such as chest pain, confusion, a severe headache or vision changes — call emergency services right away.

Why the Chart You Pick Affects More Than One Label

The standard you use doesn't just color a single reading — it also shapes how a series of readings gets summarized. Both guidelines support a simple share-of-readings view: what percentage of your logged readings over a period sit below the hypertension line, which is under 130/80 for AHA/ACC 2025 and under 140/90 for ESC 2024. Because that line sits in a different place for each standard, the same set of readings can produce a different percentage depending on which chart is selected, even though none of the underlying numbers changed. This is one more reason it's worth confirming which standard a chart, app or report is using before comparing percentages across sources.

Choosing Which Standard to Use

Most people don't need to choose a standard themselves — your clinician will usually tell you which one they follow, and it typically depends on where you're being treated. BPal lets you set AHA/ACC 2025 or ESC 2024 in settings, so the category badge and distribution card in your trends view match the standard your doctor actually uses, instead of leaving you to convert between the two by hand. For a closer look at where this setting lives and what each badge color means, see the guide to blood pressure categories.

Frequently Asked Questions

Which chart should I trust, AHA or ESC?

Neither is universally "right" — they're both current clinical guidelines from major cardiology organizations, and the one that matters for you is whichever your own doctor follows. If you're not sure, it's a reasonable question to ask at your next appointment. Either way, remember that a single reading cannot diagnose hypertension under any chart — the category label describes one measurement, not a diagnosis.

Why did an app or a doctor abroad categorize my reading differently?

It's very likely a standards difference rather than an error. Because ESC's diastolic axis starts at 70 and AHA/ACC's starts at 80, readings with a diastolic in the high 70s can be "Elevated" under one chart and "Normal" under the other. Check which standard is being applied before assuming a mistake.

Does the emergency threshold change between the two charts?

No. Systolic over 180 or diastolic over 120 is treated as an emergency signal under both AHA/ACC and ESC guidance, independent of which four- or three-band chart is otherwise in use.

Can I switch standards partway through tracking my readings?

Yes — switching the setting only changes how existing and future readings are labeled and summarized; it doesn't change the numbers you've logged. It's worth picking one standard and sticking with it for any period you plan to compare, though, since flipping back and forth will make trend comparisons harder to read.

Do other organizations, like the CDC or WHO, publish their own separate chart?

The CDC and WHO generally point to guideline bodies like the AHA/ACC and ESC for the detailed category thresholds rather than publishing a third competing set of numbers, so the two charts above cover the numeric categories most people will encounter in the U.S. and in Europe.

For more on how averages shift with age without changing these categories, see normal blood pressure by age. If your numbers already fall in one of the higher bands, what high blood pressure means walks through the stages and sensible next steps, and mean arterial pressure (MAP) explains a related number you may see in your reports.