The blood pressure chart, in both the American and European versions

A reading of 135/85 can be called stage 1 hypertension in the United States and high-normal blood pressure in much of Europe. Both descriptions can be correct because the American and European guidelines draw their category lines in different places.

That difference does not mean one country has different human biology. Blood pressure rises along a continuous risk curve. The guidelines use thresholds to help clinicians describe risk and decide what deserves closer attention.

This blood pressure chart puts the two systems side by side. It also explains what a category can and cannot tell you, which number tends to matter more at different ages, and why a poorly taken reading belongs in no category at all.

The two blood pressure charts side by side

Blood pressure is written as systolic over diastolic pressure, such as 135/85 mmHg. Systolic is the top number, recorded as the heart contracts. Diastolic is the bottom number, recorded between beats when the heart relaxes. The unit mmHg means millimetres of mercury, the traditional unit used by blood pressure monitors and guidelines.

The American College of Cardiology and American Heart Association (ACC/AHA) use the 2017 adult categories below. The European Society of Cardiology and European Society of Hypertension (ESC/ESH) use the office categories shown beside them. These are reference categories, not diagnoses.

The word “or” matters. If either number falls in a higher row, use the higher category. A reading of 138/92 is not placed in a lower category because the systolic number is below 140. Its diastolic number places it higher. Likewise, 150/78 is classified from the systolic value rather than being treated as normal because the diastolic value is below 80.

The ranges in the European column are commonly used for office blood pressure. Home and ambulatory readings often use lower thresholds in clinical decision-making. That is one reason a home diary should show how and where each reading was taken, rather than mixing home and clinic numbers without a label. A monitor reading taken at the kitchen table should not be presented as though it were an office measurement.

You can enter a reading in the Blood pressure category checker (ACC/AHA and ESC/ESH) to see both labels. It is a way to compare reference systems, not a way to diagnose yourself.

Why the American and European versions disagree

The disagreement is mainly about where to place a boundary on a gradual increase in risk. It is not a claim that 129/79 is safe and 130/80 suddenly becomes dangerous. The body does not change category at one exact point.

ACC/AHA moved the threshold for stage 1 hypertension to 130 systolic or 80 diastolic. The guideline places more readings into a group that may need attention, especially when other risk factors are present. ESC/ESH keeps hypertension at 140/90 or higher in the office, with a high-normal group below that threshold.

The systems still agree on several practical points. A persistently very high pressure needs prompt medical review. A persistent reading in the middle ranges deserves confirmation, context, and a discussion of overall risk. Neither framework treats a single measurement as proof of hypertension.

This is why a search for “blood pressure chart systolic and diastolic” can produce answers that seem to conflict. Check which guideline the page uses, whether it describes office or home readings, and whether it is showing a category or a treatment target. Those are different things.

For a closer look at the reasoning behind the thresholds, see Why American and European blood pressure guidelines disagree.

A chart classifies a reading. It does not diagnose you.

A category describes one set of numbers under a particular standard. Hypertension is a clinical diagnosis based on repeated measurements, usually including readings outside the medical office. A clinician may use home monitoring or ambulatory monitoring, which records readings over a longer period, to look for a reliable pattern.

One high result can follow a rushed walk, a difficult conversation, pain, caffeine, nicotine, or an incorrect cuff position. One low result can follow illness, dehydration, or a measurement taken immediately after standing. The next step is not to attach a permanent label to that reading.

A useful record includes the date, time, arm, position, pulse if shown, and any detail that could explain an unusual result. Record whether the measurement was taken before or after food, caffeine, exercise, or a medicine if that information is part of the monitoring plan. A seven-day pattern is usually more informative than a single value, though the exact monitoring plan belongs to the clinician who is reviewing it. The 7-day home blood pressure average calculator can help organize a completed series without replacing that review.

White-coat hypertension means office readings are higher than readings outside the office. The reverse pattern, sometimes called masked hypertension, can also occur: an office reading looks acceptable while home readings are higher. A home diary helps reveal these patterns only if the measurements are taken consistently and with a validated monitor.

Which number matters more?

There is no permanent winner between systolic and diastolic pressure. The answer changes with age and with the pattern of the reading.

After midlife, systolic pressure is generally the stronger marker of long-term cardiovascular risk. Arteries tend to stiffen with age, so the top number may rise while the bottom number stays the same or falls. This produces isolated systolic hypertension, such as 148/72.

Diastolic pressure can carry more information in younger adults, when the bottom number is more likely to be the first to rise. That does not make a raised diastolic reading unimportant in an older adult, or a raised systolic reading unimportant in a younger adult. Both numbers belong in the record.

The gap between the two numbers is pulse pressure. For 140/70, it is 70 mmHg. A wide pulse pressure can be associated with arterial stiffness, but it is not a diagnosis by itself. You can calculate the gap with the Pulse pressure calculator, then discuss repeated results with your clinician.

Mean arterial pressure is another calculated value that estimates the average pressure driving blood through the arteries during one heartbeat. It has uses in clinical settings, but it does not replace the top and bottom numbers for interpreting a home diary. The Mean arterial pressure calculator shows the arithmetic and its limits.

Is 140 over 70 a good blood pressure?

No chart calls 140/70 normal. Under ACC/AHA, the systolic value places it in stage 2 hypertension. Under ESC/ESH, it is grade 1 hypertension and fits isolated systolic hypertension because the systolic value is at least 140 while the diastolic value is below 90.

That classification is a description of the reading, not a diagnosis. A single 140/70 reading may be affected by timing, movement, talking, or the way the cuff was fitted. Repeat it under calm, consistent conditions and keep the result with the rest of your readings.

Do not try to lower one number by changing a medicine or dose based on a chart. If a category is about to influence a treatment decision, that decision belongs with the clinician who knows your history.

Why age and gender charts can mislead

People often search for “blood pressure chart by age and gender” or “blood pressure chart for women.” Adult guidelines generally do not provide a simple chart that makes a higher reading normal because someone is older, male, or female.

Blood pressure tends to change with age, and pregnancy creates its own clinical context. Sex, family history, kidney health, diabetes, sleep, alcohol use, and prescribed or nonprescription medicines can affect risk. Those facts help a clinician interpret a pattern; they do not turn a category table into a personal target chart.

Children are different. Their reference ranges use age, height, and sex because body size is still changing. An adult chart should not be used for a child.

A normal blood pressure range also needs careful wording. In the ACC/AHA system, below 120/80 is normal. In the ESC/ESH system, below 120/80 is optimal, while 120–129/80–84 is normal. “Normal” is a label within a guideline, not a promise that every future reading will be the same.

For more detail on why adult age charts are often oversimplified, read Blood pressure by age: the charts everyone searches, and why guidelines rejected them.

What throws off a reading

A cuff can produce a precise-looking number even when the setup is wrong. Sit with your back supported and your feet flat. Rest quietly before measuring, keep the arm supported at heart level, place the cuff on bare skin, and do not talk during the reading.

A cuff that is too small can give a falsely high result. A cuff that is too large can give a falsely low result. The monitor should fit the upper arm and be validated for blood pressure use. Wrist devices can be useful in some situations, but they require careful positioning and are generally less forgiving. Follow the monitor’s instructions for cuff placement and compare the device with office equipment if a clinician asks you to bring it in.

Exercise, caffeine, nicotine, alcohol, pain, stress, a full bladder, cold temperatures, and a recent meal can affect the result. Repeatedly measuring every few minutes can also increase worry and make the numbers less representative. Follow the monitoring schedule you were given instead of chasing one reading.

A smartphone camera, a fingertip placed on a screen, or a phone app alone cannot measure blood pressure. Only a validated cuff can do that. An app can record a cuff reading, but it cannot measure pressure through the phone.

The full practical checklist is in Measuring blood pressure at home correctly, step by step. If you prefer paper, a Printable blood pressure log can capture the same details.

When a number needs urgent attention

If a reading is above 180 systolic or above 120 diastolic, sit quietly and repeat it after a short rest. If it remains that high, seek urgent medical guidance. If very high pressure occurs with chest pain, breathlessness, weakness, vision change, or confusion, seek emergency care rather than making another diary entry.

That is the point at which symptoms and the reading belong together. Do not wait for a chart to explain the situation.

How to use a blood pressure chart well

First, identify the setting. An office reading and a home reading are not always interpreted with the same thresholds. Write “home,” “clinic,” or “ambulatory” beside the result.

Second, classify both numbers using the same guideline. Do not use the American systolic threshold with the European diastolic threshold. If you are comparing advice from two countries, write down which framework each source follows.

Third, look for a pattern. Morning and evening readings may differ. Medicines, sleep, activity, meals, and stress can also shape the day. A diary that separates morning from evening makes those changes easier to see. If the device displays an irregular-heartbeat symbol or another alert, record that beside the reading rather than treating it as a diagnosis.

Tonelva is designed for this record-keeping work. It logs a reading in three taps, keeps morning and evening trends separate, and can produce a PDF for a medical appointment. It records readings from your cuff; it does not measure them. Everything stays on the device, with no account or server.

If you use the app, search for “Tonelva Blood Pressure Log” in the App Store or Google Play. Apple Health syncing can help keep compatible health records together, while the PDF gives your clinician a view of the numbers over time.

A good log does not need to be elaborate. It needs the actual reading, the time, the conditions, and enough consistency to show what usually happens. That is more useful than a long list of isolated numbers copied from memory.

Bottom line

Use the blood pressure chart to name a reading, not to name yourself. At 135/85, ACC/AHA says stage 1 while ESC/ESH says high-normal; at 140/70, both systems place the systolic number above their normal range. The reliable approach is to show both scales, take readings correctly over time, and bring the record to the clinician who can interpret it in context.