How to Take Blood Pressure Manually, Step by Step
To take blood pressure manually, inflate the cuff about 30 mmHg past your pulse, let it down 2 mmHg a second, and note the first and last tapping sounds.
This article is educational content, not medical advice. Always talk to a healthcare professional about your blood pressure.
To take blood pressure manually, wrap a cuff around your bare upper arm, place a stethoscope over the artery at the inside of your elbow, and pump the cuff until you can't hear your pulse. Then let the air out slowly. The first tapping sound you hear is your systolic (top) number, and the point where the sounds disappear is your diastolic (bottom) number.
The American Heart Association's scientific statement on blood pressure measurement sets out the method clinicians use. Find the pressure at which your wrist pulse vanishes, then inflate about 30 mmHg above it. Deflate at roughly 2 mmHg per second. Systolic is the first of at least two regular taps (Korotkoff phase I), and diastolic is where all sound stops (phase V).
The NIH's MedlinePlus notes that a manual device is very accurate in skilled hands, but it isn't the recommended type for home use: for most people, an automatic upper-arm monitor is the better choice.
What do you need for a manual reading?
A manual kit has four parts: an inflatable cuff, a rubber squeeze bulb with a small screw valve, a round dial gauge (called an aneroid gauge), and a stethoscope. Some home kits build the stethoscope head into the cuff, which helps a lot when you're measuring yourself.
Check two things first. With the cuff empty, the needle should rest on zero; if it doesn't, every reading will be off. And the cuff has to fit: Mayo Clinic notes that a cuff that's too small can add roughly 2 to 10 mmHg to a reading. Our cuff size chart shows how to match the cuff to your arm.
Measuring at the same time each day makes your readings comparable. BPlus can remind you. Set my reminder →
How do you take blood pressure manually, step by step?
Set up the way the AHA advises for any home reading: no caffeine, exercise or smoking for 30 minutes, an empty bladder, and five quiet minutes sitting with your back supported and feet flat. Then:
- Bare the arm and fit the cuff. Wrap it snugly on bare skin, with the lower edge about an inch (2–3 cm) above the elbow crease and the tube or artery marker over the inside of the arm. Rest the arm on a table so the cuff sits at heart level.
- Find your target pressure. Close the valve by turning it clockwise. If someone can help, have them feel the pulse at the wrist of your cuffed arm while you pump; the gauge reading where it vanishes is a rough systolic number. Let the air out. Measuring alone, use the top number from your recent readings instead. If you hear taps as soon as you start listening, let the cuff empty fully, wait a minute, and pump higher.
- Place the stethoscope. Put the earpieces in, angled forward. Set the flat disc on the inside of the elbow, just below the cuff edge, where you can feel the brachial pulse. Don't press hard.
- Inflate. Pump quickly to about 30 mmHg above the number from step 2. You should hear nothing in the stethoscope.
- Deflate slowly and listen. Open the valve a little so the needle falls about 2 mmHg per second, roughly one small tick on most dials each second.
- Note the first taps. The first of two or more regular tapping sounds is your systolic number.
- Note the silence. Keep deflating. The point where the taps stop completely is your diastolic number.
- Let the cuff empty fully, wait one minute, and take a second reading.
Measuring someone else? The steps are the same and easier: you work the bulb and dial while they sit relaxed, and you can feel their wrist pulse yourself in step 2.
Write both readings down straight away. If the two numbers are new to you, our guide to understanding your blood pressure numbers explains them.
What should you hear as the cuff deflates?
The sounds change in a set order, and knowing it makes both numbers easier to catch.
| What you hear | What it means | What you write down |
|---|---|---|
| Silence, cuff pressure high | The artery is squeezed shut | Nothing yet |
| First clear taps, at least two in a row | Blood is starting to push through | Systolic (top number) |
| Taps get louder, then softer and muffled | The cuff is pressing less and less | Nothing; keep listening |
| Taps vanish, then come back lower down | An auscultatory gap | Ignore the gap; the first taps still count |
| Complete silence | Blood flows freely again | Diastolic (bottom number) |
The auscultatory gap is the classic trap. Sounds can fade out, then return further down the dial. Pump too low and you'll mistake the returning taps for the start, recording a systolic number that's too low. Step 2 guards against that.
Why is measuring your own blood pressure manually so hard?
On yourself, you're juggling three jobs: pumping, watching a moving needle, and listening for faint sounds. The arm being measured is supposed to stay limp and supported, yet it's easy to tense it while you hold the stethoscope or lean in to read the dial.
You also need good hearing, clear sight of the dial and a steady hand. Let the air out at 10 mmHg a second instead of 2, and with a pulse of about 60 the needle falls 10 points between two beats. The real number can slip past unheard. Clinicians have a name for one more error, terminal digit preference: rounding readings to numbers that end in zero.
Manual or automatic: which is better at home?
For most people, automatic. The American Heart Association recommends an automatic, cuff-style monitor worn on the upper arm for home use, and MedlinePlus calls digital monitors the best choice for most people. An automatic monitor takes the listening, the deflation speed and the rounding out of your hands.
A manual cuff still makes sense if you trained in it, want a battery-free backup, or a clinician asked you to use one. Keep the setup identical each day, and take your kit to an appointment to compare it with the clinic's reading. Our guide to choosing a home blood pressure monitor covers what to look for in an automatic one.
Whichever you use, the routine matters more. The AHA statement suggests two readings a minute apart, morning and evening, for seven days: 2 × 2 × 7 = 28 readings, enough to show your real average.
What if a manual reading is very high?
If you have chest pain, shortness of breath, back pain, numbness, weakness, trouble speaking or changes in vision, seek medical help immediately, whatever the reading. Without symptoms, a top number above 180 and/or a bottom number above 120 (written as 180/120 mmHg) calls for one step: the AHA advises waiting about five minutes and measuring again. If it's still that high, seek medical help immediately. Don't keep re-measuring to get a lower figure.
Logging manual readings with BPlus
A manual cuff has no memory, so every number has to be written down. BPlus is a logging app for that.
Type in systolic, diastolic and pulse by hand, and the time, date and arm are stamped automatically. Add a note such as "manual cuff" to tell readings apart. If you also own a digital monitor, you can scan its display with the camera instead.
The app charts readings over time, sorts each into color-coded categories, and exports a PDF or CSV report for your doctor. Daily reminders help keep the routine. The app works offline, needs no account, and keeps your data on your device.
BPlus is a wellness and logging tool, not a medical device. It doesn't measure blood pressure or diagnose anything, and it's no substitute for professional care.
Mini-FAQ
Can you take your own blood pressure manually? Yes, but it's harder than taking someone else's. You pump, listen and watch the dial at once while keeping the measured arm relaxed. A cuff with a built-in stethoscope head helps. For the first few weeks, compare your results with an automatic monitor or your clinic's reading.
Where do you put the stethoscope for a manual reading? On the inside of the elbow, just below the lower edge of the cuff, over the brachial artery. Feel for a pulse there first to find the spot. Rest the disc flat with light pressure, and don't tuck it so far under the cuff that it rubs and adds noise.
How fast should you let the air out? About 2 mmHg per second, the rate in the AHA's measurement statement. Much faster and you can skip past the real number between heartbeats. Much slower and the cuff stays tight too long, which is uncomfortable and can distort the reading.
Is a manual blood pressure reading more accurate than a digital one? Usually not at home. In trained hands a manual reading is very accurate, but hearing, deflation speed and rounding all add error. That's why MedlinePlus and the AHA point most people to an automatic upper-arm monitor.
Sources
Medical disclaimer. BPlus is a wellness and informational tool that helps you record, organize and understand your blood pressure readings. It is not a medical device and does not diagnose, treat, cure or prevent any disease. BPlus does not measure blood pressure on its own. Always consult a qualified healthcare professional. Readings are not a substitute for a clinically validated blood pressure monitor.
