Blood pressure is one of the most important numbers for your heart and brain. The good news: you can track it yourself at home in a couple of minutes with a simple monitor. When you know your numbers, you notice changes early and can make calm, well-timed decisions with your doctor.
Why measure at home
Many people can't feel it when their blood pressure goes up; headaches and other signs are far from guaranteed (WHO). A single clinic reading doesn't tell the whole story either. Some people's numbers rise from nerves in the exam room, while others run higher at home.
Readings over several days give a truer picture. That is why the USPSTF recommends confirming a diagnosis with measurements taken outside the clinic (USPSTF, 2021), and the European Society of Cardiology treats home monitoring as a key part of diagnosis and follow-up (ESC, 2024).
Choosing a monitor
- Pick an automatic upper-arm monitor. Wrist monitors depend heavily on arm position.
- Get the right cuff size. A cuff that is too small reads too high (AHA, 2019).
- Choose a clinically validated model. If unsure, compare it with the doctor's device at your family clinic.
How to measure correctly: 7 steps
- For 30 minutes beforehand, skip coffee and strong tea, don't smoke and don't exercise.
- Use the bathroom first. A full bladder pushes the reading up a little.
- Sit in a chair with back support, feet flat on the floor and legs uncrossed. Rest quietly for 5 minutes.
- Put the cuff on your bare upper arm, not over clothing, about 2–3 cm (1 inch) above the bend of your elbow.
- Rest your arm on a table so the cuff is at heart level.
- Don't talk or move while the monitor is working.
- Take 2 readings 1 minute apart and write down both, with the date and time.
The first time, measure both arms. After that, always use the arm that gives the higher reading (AHA, 2019).
When to measure
As a habit, one check a week at the same time of day is enough. For a diagnosis or treatment change, doctors usually ask for at least 3 and ideally 7 days in a row, morning (before breakfast and medicines) and evening (ESC, 2024). Don't worry about one high number: the average matters more.
What the numbers mean
The top number (systolic) is the pressure in your arteries when your heart beats; the bottom number (diastolic) is the pressure between beats. Both are measured in millimeters of mercury (mmHg).
| Top and bottom numbers | AHA/ACC category | What you can do |
|---|---|---|
| Below 120 and below 80 | Normal | Keep up your habits and check weekly |
| 120–129 and below 80 | Elevated | Focus on salt, movement and sleep |
| 130–139 or 80–89 | Stage 1 hypertension | See your doctor with a few days of readings |
| 140 or higher, or 90 or higher | Stage 2 hypertension | See your doctor in the next few days |
| Above 180 or above 120 | Very high | Recheck after 5 minutes (see below) |
Source: AHA/ACC (2018). The European Society of Cardiology groups the numbers a little differently: below 120/70 is non-elevated, 120–139/70–89 is elevated, and hypertension means 140/90 or higher at the clinic or a home average of 135/85 or higher (ESC, 2024). The message is the same: the closer to normal, the better for your heart and brain. Your doctor will set your personal target.
If a reading is very high
If you see a reading above 180/120, sit calmly and measure again after 5 minutes. If it is still that high and you have chest pain, shortness of breath, numbness or weakness in the face, arm or leg, or changes in vision or speech, call emergency services (103 in Uzbekistan). If you have no symptoms, contact your doctor the same day.
Salt: the simplest change for your blood pressure
WHO advises adults to eat less than 5 g of salt a day, roughly one teaspoon, and to choose iodized salt (WHO). That includes salt hidden in bread and ready-made foods.
In the DASH-Sodium trial, cutting salt lowered blood pressure, most of all when combined with the DASH eating pattern, rich in vegetables, fruit and low-fat dairy (NEJM, 2001).
Easy ways to eat less salt:
- Watch the bread. It can supply a large share of daily salt, so keep portions modest.
- Make salty snacks occasional: qurt (dried salted yogurt balls), pickles, sausage and chips.
- Taste before you salt, and take the shaker off the table.
- Flavor with herbs and spices: cumin, pepper, garlic, lemon, basil, cilantro, dill.
- Eat more vegetables, fruit, mung beans and beans. They are rich in potassium.
Most people get used to a less salty taste within a few weeks, so cut back gradually.
Other habits that support healthy blood pressure
WHO and ESC recommendations point in the same direction (WHO; ESC, 2024):
- regular movement, at least 150 minutes a week of brisk walking or similar activity;
- a healthy weight, especially less fat around the waist;
- quitting tobacco and naswar, and limiting alcohol or not drinking at all;
- enough sleep and gentle stress relief, such as slow breathing.
If you take blood pressure medicine, don't stop or change it on your own based on home readings; discuss any change with your doctor.
Who should check, and from what age
The USPSTF recommends screening for all adults 18 and older: yearly from age 40 or with risk factors such as excess weight or high-normal readings, and every 3–5 years for younger adults with normal blood pressure (USPSTF, 2021).
Keep your numbers on track with 100 Yosh
From age 40, the 100 Yosh app adds a weekly “Check your blood pressure at home” task, and your annual check-up shows up as a reminder in the Roadmap. The daily plan also covers movement, nutrition and sleep, which all affect blood pressure. The app is free, has no ads and works on iPhone, iPad, Mac, Apple Watch and Android.
This article is for general information and is not medical advice — talk to your doctor before making decisions about your health.
Frequently asked questions
How often should I check my blood pressure?
If your blood pressure is normal, a weekly check is a good habit. For a diagnosis or a treatment change, doctors usually ask for 3 to 7 days of readings, twice each morning and evening.
Are wrist blood pressure monitors accurate?
Experts recommend a validated upper-arm monitor. Wrist monitors are sensitive to arm position, so their readings are often less reliable.
What if my two arms give different readings?
The first time, measure both arms, then always use the arm with the higher reading. If the difference is consistently large, mention it to your doctor.
My blood pressure is high at the clinic but normal at home. Which is right?
Some people's blood pressure rises from nerves at the clinic. That is why the USPSTF recommends confirming a diagnosis with readings taken outside the clinic, so bring your home log.
How quickly does cutting salt lower blood pressure?
In the DASH-Sodium trial, eating less salt lowered blood pressure within a month, and even more alongside a diet rich in vegetables and fruit. Results vary, so keep measuring.
Should I still check my blood pressure if it runs low?
Yes, it helps to know your usual numbers. If you feel dizzy when you stand up, tell your doctor, especially after starting a new medicine.
Sources
- Hypertension (fact sheet) — WHO, 2025
- 2024 ESC Guidelines for the management of elevated blood pressure and hypertension — European Heart Journal (ESC), 2024
- 2017 ACC/AHA Guideline for the Prevention, Detection, Evaluation, and Management of High Blood Pressure in Adults — Hypertension (AHA/ACC), 2018
- Measurement of Blood Pressure in Humans: A Scientific Statement From the American Heart Association — Hypertension (AHA), 2019
- Hypertension in Adults: Screening — USPSTF, 2021
- Sodium reduction (fact sheet) — WHO, 2026
- Effects on Blood Pressure of Reduced Dietary Sodium and the Dietary Approaches to Stop Hypertension (DASH) Diet — New England Journal of Medicine, 2001
