Blood Pressure Values Table: Normal Ranges by Age & Interpretation
Which blood pressure values are normal? The following table helps you quickly interpret your measured blood pressure. You always get two values: the systolic blood pressure as the upper number and the diastolic blood pressure as the lower number.
For adults, blood pressure values below 120/80 mmHg are usually considered optimal. Values starting at around 140/90 mmHg, when measured repeatedly, are considered high blood pressure. But what matters is not a single measurementrather the pattern of several correctly taken readings.
Blood pressure values at a glance
The interpretation depends on both the systolic and diastolic values. If one of the two numbers is in a higher range, the blood pressure is usually classified according to that higher range.
| Systolic (mmHg) |
Diastolic (mmHg) |
|
| Optimal |
< 120 |
< 80 |
| Normal |
120-129 |
80-84 |
| High normal |
130-139 |
85-89 |
| Stage 1 hypertension |
140-159 |
90-99 |
| Stage 2 hypertension |
160-179 |
100-109 |
| Stage 3 hypertension |
>= 180 |
>= 110 |
| Isolated systolic hypertension |
>= 140 |
< 90 |
The table is meant as a general guide. For diagnosis, treatment, and personal target values, age, pre-existing conditions, medications, and your overall heart and blood vessel risk all play a role.
Blood Pressure Calculator: Interpret Your Readings
With the blood pressure calculator, you can interpret your measured values right away. To do that, enter the upper and lower blood pressure numbers.
Diastolisch: mmHg
Eine solche automatische Bewertung kann niemals einen Arztbesuch ersetzen, da für die individuelle Blutdruckeinstellung auch weitere Erkrankungen und Risikofaktoren mit in das Behandlungskonzept eingebunden werden. Besprechen Sie fraglich erhöhte Blutdruckwerte also immer mit Ihrem Arzt.
Bitte beachten Sie auch, dass laut einigen Leitlinien bei häuslichen Messungen ein Blutdruck von >=135 und/oder >=85 mmHg als Bluthochdruck gilt.
What do systolic and diastolic blood pressure mean?
Blood pressure is given in millimeters of mercury, abbreviated as mmHg. For example, a reading of 128/82 mmHg means:
- 128 mmHg systolic: the pressure when the heart pumps blood through the body.
- 82 mmHg diastolic: the pressure when the heart relaxes between two beats.
You can read more in the detailed articles: systolic blood pressure, diastolic blood pressure, and pulse pressure.
Blood pressure values by age: Are there separate normal ranges?
Many people look up a blood pressure table by age. Whats important here is the difference between normal ranges and target values.
Normal ranges describe the general classification of blood pressure readings. Target values, on the other hand, indicate what blood pressure a specific person should aim for as part of treatment. These target values can vary depending on age, pre-existing conditions, and how well the treatment is tolerated.
| Situation | Interpretation |
|---|---|
| Younger adults without relevant pre-existing conditions | A lower target range is often aimed for if it is well tolerated. |
| Older people | The target value is frequently set more individually, especially in cases of frailty, dizziness, or fall risk. |
| People with diabetes, kidney disease, or cardiovascular conditions | The target value depends on overall risk and the doctors assessment. |
| A single elevated reading | No reliable diagnosis yet. What matters are repeated measurements under correct conditions. |
Thats why a simple table by age is only of limited help. It can provide orientation, but it does not replace an individual medical assessment.
When is blood pressure too high?
High blood pressure (hypertension) is generally diagnosed whenon repeated measurementsvalues are in the range of 140/90 mmHg or higher. Individual elevated readings can also be caused by stress, physical exertion, pain, caffeine, excitement, or incorrect measurement.
Have elevated values checked by a doctor, especially if they occur repeatedly or if symptoms appear.
If blood pressure is very high along with chest pain, shortness of breath, paralysis, speech problems, vision problems, confusion, or severe headaches, seek medical help immediately.
More about this: High blood pressure: Symptoms and warning signs.
When is blood pressure too low?
Low blood pressure is not automatically a sign of illness. Many people have consistently lower values and are symptom-free. Low blood pressure can become a problem if symptoms occurfor example, dizziness, lightheadedness, fainting, weakness, or vision problems.
More about this: Low blood pressure.
Why blood pressure values fluctuate
Blood pressure is not a fixed number. It changes throughout the day and responds to movement, stress, sleep, meals, medications, temperature, and the measurement situation. Thats why a single reading is only a snapshot.
More meaningful is a series of correctly measured values over several days. Its especially helpful to measure at the same times in the morning and evening and to document the results.
More about this: Blood pressure over the course of the day and Measure blood pressure correctly.
How to measure blood pressure correctly
To make blood pressure readings comparable, they should be taken under as similar conditions as possible.
- Before measuring, sit quietly for a few minutes.
- Dont measure right after exercise, coffee, nicotine, or emotional excitement.
- Choose the right cuff size and fit it correctly.
- Support your arm comfortably
- Measure at heart level (for wrist devices).
- Dont talk during the measurement.
- For follow-up measurements, measure as often as possible at the same time of day.
It is often recommended to take several measurements spaced one to two minutes apart and to record the results. If the values differ noticeably, another measurement may be helpful.
Which normal ranges does BloodPressureDB use?
Blood pressure readings are not interpreted the same way everywhere internationally. Medical societies and guidelines differ in part in threshold values, terminology, and target ranges.
Thats why BloodPressureDB uses its own harmonized table for the app and the web version. For this purpose, international recommendations were compared and converted into a consistent interpretation. You can find the detailed reasoning here: Harmonized global blood pressure normal ranges.
Normal ranges and target values are not the same
Normal ranges help you interpret a blood pressure reading in general. Target values, however, are personal treatment goals. They are set by your doctor and can differ depending on age, existing conditions, medications, side effects, and your personal risk.
Newer guidelines place more emphasis on the fact that, for many people, lowering blood pressure well can reduce cardiovascular risk. At the same time, treatment must be tolerated well. Especially in older or frail people, blood pressure thats too low can cause symptoms.
So dont change your medications on your own. Always discuss target values and treatment with your doctor.
Document your blood pressure readings
Frequently asked questions about blood pressure normal ranges
Is 120 over 80 a normal blood pressure?
For adults, a blood pressure around 120/80 mmHg is usually considered a normal to very favorable range. However, what matters is the average of several correctly measured readings.
When is blood pressure considered too high?
Repeated readings starting at about 140/90 mmHg are generally considered high blood pressure. Individual measurements usually arent enough for a reliable diagnosis.
What blood pressure is normal at an older age?
As people get older, blood pressure values often increase. But that doesnt automatically mean that higher values are always harmless. Individual target values are crucial for treatment.
Whats more important: the systolic or the diastolic value?
Both values are important. The systolic value is the upper number during the hearts ejection phase. The diastolic value is the lower number during the relaxation phase. Depending on age and situation, one value may be more relevant than the other.
Why does my blood pressure monitor show different values?
Blood pressure fluctuates naturally. Measurement position, cuff placement, stress, conversations, movement, or short breaks between measurements can also affect the results.
Is one measurement enough to diagnose high blood pressure?
Usually not. A diagnosis should be based on several correctly measured readingsfor example, repeated measurements in the doctors office, home measurements over several days, or a 24-hour blood pressure monitor.
Sources
- German Hypertension League: Patient information on high blood pressure
- German Heart Foundation: systolic and diastolic blood pressure
- 2023 ESH Guidelines for the management of arterial hypertension
- 2024 ESC Guidelines for the management of elevated blood pressure and hypertension
- BloodPressureDB: Harmonized global blood pressure normal ranges
Author Horst Klier has been dealing intensively with high blood pressure since 2002 – initially from personal experience and since 2009 as a developer of BloodPressureDB – and, thanks to his app and specialist platform used millions of times and numerous publications, he is now regarded as an established blood pressure expert. As the author of several health guides and professional articles, he explains complex topics clearly and in a practical way.
