How Often to Check Blood Pressure at Home
By the BP Monitor Lab editorial team · Written from manufacturer documentation and published guidance, not from our own device testing · Last checked: August 31, 2026
How often should you check your blood pressure at home?
It depends on why you are checking, and the frequency itself is set with your healthcare professional. That is the American Heart Association's own instruction, in its own words: talk with your healthcare professional about how often to take your blood pressure.
What the AHA does specify is the technique, and it is worth more than a schedule. Each time you measure, take two readings one minute apart, at the same time each day, after five minutes of quiet rest, and write both down.
We used to publish a table here that told you how often to measure based on your risk profile. We could not source a single row of it, so it is gone.
Why we will not give you a number
A schedule looks helpful. It is the thing most pages about this question lead with, and it is the thing readers arrive wanting. It is also the part no general-audience source will actually commit to, because the right answer depends on your diagnosis, your treatment, what changed recently and what your clinician is trying to learn.
The honest version is less satisfying and more useful: measure correctly, measure consistently, record everything, and let the person managing your treatment set the cadence. A precise-looking number invented by a website is worth less than a rough one from someone who has seen your chart.
Four reasons people measure at home
Each of these is a different job, which is why one frequency cannot cover them. In every case the technique is the same and the cadence is not ours to set.
Building a log before an appointment
Measure the same way each time and write every reading down, including the ones you do not like. The AHA publishes a printable tracker for exactly this, and tells you to bring the log or the monitor itself to the visit.
Who decides: Ask the clinician who will read it how many days they want.
Confirming a diagnosis made in the office
Home readings are used to check whether an office reading holds up away from the office. The AHA says home monitoring can be used to help confirm a diagnosis of high blood pressure.
Who decides: Your clinician sets the period and then interprets it.
Monitoring treatment over time
The AHA recommends home monitoring for everyone with high blood pressure, so their healthcare professional can tell whether treatment is working. It does not replace appointments.
Who decides: Your clinician sets how often, and it may change over time.
After a change to your treatment
A change is usually the point at which someone wants more data than usual. What counts as more, and for how long, depends on what changed.
Who decides: The person who changed the plan. Never stop or adjust medication because of a home reading.
The part that is specified: how to take each reading
This is where the AHA is precise, and where getting it wrong changes your number more than any schedule would.
- •Do not smoke, drink caffeinated drinks or exercise in the 30 minutes before. Empty your bladder.
- •Sit still for at least five minutes first. Do not talk and do not use your phone.
- •Put the cuff on bare skin, not over a sleeve, with the bottom edge just above the bend of your elbow.
- •Support your arm on a flat surface so the cuff sits at heart level.
- •Take two readings one minute apart and write both down.
- •Measure at the same time each day.
The cuff matters more than any of the rest. One that is too small squeezes a narrow band of tissue and reads high. Our cuff sizing guide walks through measuring your arm, and our technique guide covers the rest in more detail.
What not to read into one reading
The AHA is direct about this: a single high reading is not an immediate cause for alarm. Blood pressure moves through the day, with posture, with what you just did, and with how long you sat still first. That is why the protocol asks for two readings and a record, rather than a verdict from one number.
If a reading is higher than usual, take it again and write both down, then check with your healthcare professional.
When a reading is an emergency
If your readings are suddenly higher than 180/120, wait at least one minute and measure again. If they are still that high, contact your healthcare professional immediately.
Call 911 if a reading that high comes with chest pain, shortness of breath, back pain, numbness, weakness, a change in vision or difficulty speaking. Do not wait to take another reading first.
Getting the log to your clinician
A log only helps if the person treating you can read it. Take the monitor itself to the appointment if it stores readings, or bring the printed tracker. The AHA also suggests having your clinician check your monitor against the office equipment about once a year, which is the simplest way to find out whether the thing on your shelf still reads true. On-device memory is finite, so if you are logging twice a day, check how many readings your monitor keeps before it starts overwriting.
Common questions
How often should I check my blood pressure at home?
It depends on why you are checking, and the frequency itself is set with your healthcare professional. That is the American Heart Association's own instruction: talk with your healthcare professional about how often to take your blood pressure. What the AHA does specify is the technique. Each time you measure, take two readings one minute apart, at the same time each day, and record both.
How many readings should I take each time?
Two, one minute apart, and write both down. That is the AHA's home protocol. You may have read that you should take three and average the last two; that convention comes from elsewhere and is not what the AHA publishes for home monitoring.
How long should I keep a log before an appointment?
Ask the clinician who will read it. The AHA supplies a printable tracker for recording home readings and tells you to bring the log, or the monitor itself, to your appointment. The useful thing is a consistent record taken the same way each time, not a particular number of days you found online.
Should I check my blood pressure every day?
That is a question for your healthcare professional, and the answer differs depending on whether you have just been diagnosed, have just had a treatment change, or are stable. We are not going to publish a rule that applies to all three, because no source we trust publishes one.
Should I measure before or after taking my medication?
Ask the person who prescribed it. The timing changes what the reading means, and it depends on the medicine and the plan. The AHA's instruction is to measure at the same time each day; anything more specific belongs to your clinician. Do not stop or change medication based on home readings.
What should I do about one high reading?
The AHA says a single high reading is not an immediate cause for alarm. Take it again, write both down, and check with your healthcare professional. If readings are suddenly higher than 180/120, wait at least one minute and measure again; if they are still that high, contact your healthcare professional immediately. If a reading that high comes with chest pain, shortness of breath, back pain, numbness, weakness, a change in vision or difficulty speaking, call 911.
Is prehypertension still a category?
No. The AHA's current categories are normal, elevated, stage 1 and stage 2. Prehypertension belonged to an older classification and you will still see it on older pages, including a previous version of this one. The thresholds themselves did not change when the 2025 guideline replaced the 2017 one.
Where this comes from
Guideline and evidence last checked: 2026-08-31. We publish what these sources say. Where they decline to give a rule, we say that instead of inventing one.
- •Home Blood Pressure Monitoring — American Heart Association
- •2025 AHA/ACC Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults — American Heart Association / American College of Cardiology, 2025-08-14
Fact-check history
What we have corrected on this page, and when. We publish the mistakes as well as the fixes.
- 2026-08-31 — Rebuilt. Removed a six-row monitoring schedule by risk profile that we could not source, and the attribution of it to 2017 ACC/AHA and JNC 8 guidance. JNC 8 is obsolete and the 2017 guideline was replaced in August 2025; neither contains that table. The page now answers by context and defers frequency to a clinician, which is what the AHA does.
- 2026-08-31 — Corrected the measurement protocol to two readings one minute apart, which is what the AHA publishes. The page had said three readings with the last two averaged.
- 2026-08-31 — Removed medication-timing instructions and an inter-arm difference threshold, neither of which we could source.