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For adults, the major guideline bodies do not publish a separate normal blood pressure range for each age band: they use one adult classification for everyone, with percentile-based charts for children and some age-specific treatment targets that a doctor applies to people already diagnosed. This matters because a search for a normal blood pressure range by age returns dozens of tidy tables giving a different figure for every decade of life, and most of them cannot be traced back to any authoritative body. This page explains what the published guidance really contains, and where age does and does not change the answer.
The blood pressure by age tables you find online
Look for a normal blood pressure range by age and you will find neat tables assigning a different figure to every decade. Very few of them cite a guideline body. Some appear to be built by averaging population data and then presenting the average as a target, which is a different thing entirely.
What the published guidance actually contains is narrower and clearer:
- One classification for adults, with no age bands in it.
- Percentile-based charts for children, because children are still growing.
- Some age-specific treatment targets, which apply to people already diagnosed and under treatment.
One classification, applied to all adults
The adult categories published by the US National Heart, Lung, and Blood Institute run from normal, less than 120 systolic and less than 80 diastolic, through elevated at 120 to 129 systolic with diastolic under 80, then stage 1 at 130 to 139 systolic or 80 to 89 diastolic, stage 2 at 140 or higher systolic or 90 or higher diastolic, and a hypertensive crisis higher than 180 systolic or higher than 120 diastolic. Age appears nowhere in that classification.
The World Health Organization describes hypertension as blood pressure of 140/90 mmHg or higher, diagnosed when readings taken on two different days are 140 mmHg or above systolic and/or 90 mmHg or above diastolic. Again, no age bands.
NICE in the UK defines stage 1 hypertension as clinic blood pressure from 140/90 mmHg to 159/99 mmHg with a daytime ambulatory or home average from 135/85 mmHg to 149/94 mmHg, and stage 2 as clinic blood pressure of 160/100 mmHg or higher but less than 180/120 mmHg with an ambulatory or home average of 150/95 mmHg or higher. These definitions do not change with the age of the adult being measured.
What those categories mean in practice is set out in our guide to normal blood pressure.
Children are the real exception
Children are the one group where blood pressure genuinely is read against age. The US National Heart, Lung, and Blood Institute states that blood pressure levels in children are classified by age, sex and height percentile, so a child result is compared with growth standards rather than with a fixed adult number.
That is why a paediatric reading cannot be judged from an adult chart, and why a paediatrician works from percentile charts. If a child has had a blood pressure reading taken, take the result to the paediatrician rather than interpreting it at home.
Where age does change things for adults: treatment targets
Once an adult has been diagnosed and is being treated, some targets are age-specific. These are treatment goals chosen by a doctor. They are not definitions of normal blood pressure.
NICE sets clinic blood pressure targets of below 140/90 mmHg for adults with hypertension aged under 80, and below 150/90 mmHg for adults aged 80 and over, adding that clinical judgement should be used for people with frailty or several conditions at once. Where ambulatory or home averages are used to monitor treatment, NICE gives below 135/85 mmHg for adults under 80 and below 145/85 mmHg for adults aged 80 and over.
NICE also says drug treatment may be considered alongside lifestyle advice for people aged over 80 with stage 1 hypertension if their clinic blood pressure is over 150/90 mmHg, and that adults under 40 with hypertension should be considered for specialist evaluation of secondary causes.
Why the targets differ in later life
The reason is not that older arteries are allowed to be unhealthy. It is that the balance of benefit and risk from treatment is weighed individually. NICE repeatedly asks clinicians to use clinical judgement for people with frailty or multiple conditions.
Standing blood pressure is part of that picture. NICE advises measuring blood pressure lying or seated and then again after the person has been standing for at least one minute in people with symptoms of postural hypotension, including falls or dizziness on standing. A fall of 20 mmHg or more in systolic pressure, or 10 mmHg or more in diastolic pressure, prompts a review of likely causes including current medicines.
That has an everyday side. Dizziness on standing is a recognised contributor to falls, and NICE points clinicians towards falls guidance in exactly that situation. Our guide to fall prevention covers the practical steps at home.
Pregnancy and other conditions have their own guidance
Blood pressure is also handled separately in pregnancy and in conditions such as chronic kidney disease and diabetes. Rather than applying the general adult targets, NICE directs readers to dedicated guidelines on hypertension in pregnancy, chronic kidney disease and type 1 diabetes.
As one example of how specific this gets, NICE lists a clinic target below 130/80 mmHg for people under 80 who have chronic kidney disease or type 1 diabetes together with an albumin to creatinine ratio of 70 mg/mmol or more. That is a clinical decision made on test results by a doctor, not a number for anyone to apply to themselves.
Ranges vary, so read what is printed on your own report
Reference ranges and thresholds vary by the organisation publishing them, by measurement method, and by age, sex, pregnancy and clinical context. Laboratory reference ranges vary by laboratory and by the method used as well. Read the range printed on your own report and take it to the doctor who ordered it.
Your treating doctor interprets your readings and your symptoms. This page does not, and cannot tell you what your own numbers mean.
If you are collecting readings at home to bring to an appointment, the method matters as much as the machine. See our guide on how to check blood pressure at home.
When to seek urgent help
NICE advises same-day specialist assessment for a clinic blood pressure of 180/120 mmHg and higher with signs such as retinal haemorrhage or papilloedema, or with life-threatening symptoms such as new onset confusion, chest pain, signs of heart failure or acute kidney injury.
A high reading without symptoms still needs prompt medical review, but contact your doctor rather than the emergency services. This guide does not replace an emergency assessment.
Support for an older family member at home
Families often want readings taken consistently and shared with the treating doctor, particularly when someone is frail or taking several medicines. Varolyn provides hypertension care at home in Bangalore, working to the plan the doctor has already set.
Frequently asked questions
Does normal blood pressure change with age?
For adults, no. The major guideline bodies publish one adult classification and do not set a different normal range for each age band. Age appears in two places only: percentile charts used for children, and some treatment targets for people already diagnosed and being treated, which a doctor decides.
What is the normal blood pressure range for adults?
The National Heart, Lung, and Blood Institute publishes normal adult blood pressure as less than 120 systolic and less than 80 diastolic. WHO and NICE define hypertension from 140/90 mmHg upward when measured in a clinic. Different bodies draw the line at different numbers, so check which classification a chart uses.
Are blood pressure by age charts reliable?
Most cannot be traced to a guideline body. Many appear to be built from population averages, which describe what is common rather than what is healthy. Authoritative bodies publish one adult classification, percentile charts for children, and some age-specific treatment targets. Treat unsourced age tables with caution.
Is 150/90 acceptable for someone over 80?
NICE sets a clinic treatment target of below 150/90 mmHg for adults with hypertension aged 80 and over, compared with below 140/90 mmHg for those under 80. That is a treatment goal a doctor chooses for someone already diagnosed. It is not a definition of normal, and not advice for any individual.
How is blood pressure assessed in children?
By percentile. The National Heart, Lung, and Blood Institute states that blood pressure levels in children are classified by age, sex and height percentile, so a child reading is compared with growth standards rather than an adult number. Only a paediatrician should interpret a child blood pressure reading.
Should an older adult have blood pressure checked standing as well as sitting?
NICE advises checking for a drop on standing in people with symptoms such as dizziness on standing or falls. A fall of 20 mmHg or more in systolic pressure, or 10 mmHg or more in diastolic pressure, after standing for at least one minute should prompt review with a doctor.
Sources
National Heart, Lung, and Blood Institute (NIH) - High Blood Pressure · NICE guideline NG136 - Hypertension in adults: diagnosis and management · World Health Organization - Hypertension fact sheet · NHLBI (NIH) - High Blood Pressure in Children and Adolescents
Last checked 2 September 2026. How we write and check these pages: editorial policy.
Consistent readings for an older family member
Varolyn provides hypertension care at home in Bangalore, with readings taken and recorded the same way each time and shared with the treating doctor who makes the clinical decisions.