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Published on: 9/22/2026
Blood pressure is measured in mmHg using two numbers, systolic (top) over diastolic (bottom), and readings fall into five standard categories: normal (below 120/80), elevated (120 to 129 systolic and under 80 diastolic), hypertension stage 1 (130 to 139 or 80 to 89), hypertension stage 2 (140 or higher or 90 or higher), and hypertensive crisis (above 180 and/or above 120, which requires immediate medical care). Your category is set by whichever number is higher, so a normal systolic reading paired with a raised diastolic still counts as elevated or high. Several factors affect accuracy, including cuff size, caffeine, stress, time of day, and white coat effect, so a single reading is rarely enough to confirm a diagnosis. Age, pregnancy, diabetes, and kidney disease can also change the targets that apply to you, and there are important details below that explain when to recheck, how to measure correctly at home, and when a reading is an emergency.
If your numbers land outside the normal range, the next question is usually why, and symptoms like headaches, chest tightness, dizziness, shortness of breath, or swelling can point toward causes that deserve attention sooner rather than later. Take a free, instant, online symptom check to see which conditions may match what you are experiencing, get a clearer sense of urgency, and walk into your next appointment with organized information instead of guesswork.
Last reviewed for medical accuracy: 09/22/2026
Keeping track of your blood pressure is a key part of maintaining good cardiovascular health. A clear blood pressure chart can help you understand where your readings fall—whether they’re within a healthy range or if you need to take action. Below, you’ll find straightforward explanations of the main categories, tips for accurate measurement, and guidance on next steps.
Blood pressure measures the force of blood pushing against the walls of your arteries as your heart pumps. It’s recorded as two numbers:
For example, a reading of 120/80 mm Hg (millimeters of mercury) means 120 systolic over 80 diastolic.
According to the American Heart Association and other credible sources, blood pressure falls into five main categories. Use the chart below to see where your numbers fit.
Normal
• Systolic less than 120 mm Hg
• Diastolic less than 80 mm Hg
– What it means: Your heart and arteries are under minimal strain.
Elevated
• Systolic 120–129 mm Hg
• Diastolic less than 80 mm Hg
– What it means: You’re at higher risk of developing hypertension if you don’t take steps like diet changes.
Hypertension Stage 1
• Systolic 130–139 mm Hg
• Diastolic 80–89 mm Hg
– What it means: Lifestyle adjustments and sometimes medications are needed to lower risk.
Hypertension Stage 2
• Systolic 140 mm Hg or higher
• Diastolic 90 mm Hg or higher
– What it means: More intensive treatment—including medication—is often recommended.
Hypertensive Crisis (Emergency Care Needed)
• Systolic over 180 mm Hg
• Diastolic over 120 mm Hg
– What it means: This could signal organ damage. Seek immediate medical attention.
Regularly using a blood pressure chart to track your readings helps you:
Accurate readings depend on proper technique. Follow these steps:
Understanding what influences blood pressure can help you interpret your chart more accurately:
If your readings fall into the elevated or hypertensive ranges, consider:
Always discuss lifestyle changes with your doctor, especially if you’re on medication.
Use your blood pressure chart as a guide, but never ignore concerning patterns or symptoms such as:
If you experience any of these, consider a free, online symptom check, using the doctor approved Ubie Symptom Checker. It can help you decide if you need urgent care.
A clear blood pressure chart is your roadmap to healthier arteries and a stronger heart. By knowing where your readings fall—normal, elevated or high—you can take informed steps to protect your health. Always speak to a doctor about any readings in the hypertensive crisis range or any symptoms that could be life threatening. Regular check-ups, lifestyle changes and, when necessary, medication will help you stay on track.
Stay proactive, stay informed, and keep that blood pressure chart close at hand.
(References)
* Masuo K, Mikami H, Itoh M, Ogihara T, Tuck ML. Sympathetic activity and body mass index contribute to blood pressure levels. Hypertens Res. 2000 Jul;23(4):303-10. doi: 10.1291/hypres.23.303. PMID: 10912765.
* James PA, Oparil S, Carter BL, Cushman WC, Dennison-Himmelfarb C, Handler J, Lackland DT, LeFevre ML, MacKenzie TD, Ogedegbe O, Smith SC Jr, Svetkey LP, Taler SJ, Townsend RR, Wright JT Jr, Narva AS, Ortiz E. 2014 evidence-based guideline for the management of high blood pressure in adults: report from the panel members appointed to the Eighth Joint National Committee (JNC 8). JAMA. 2014 Feb 5;311(5):507-20. doi: 10.1001/jama.2013.284427. PMID: 24352797.
* Flynn JT, Kaelber DC, Baker-Smith CM, Blowey D, Carroll AE, Daniels SR, de Ferranti SD, Dionne JM, Falkner B, Flinn SK, Gidding SS, Goodwin C, Leu MG, Powers ME, Rea C, Samuels J, Simasek M, Thaker VV, Urbina EM, SUBCOMMITTEE ON SCREENING AND MANAGEMENT OF HIGH BLOOD PRESSURE IN CHILDREN. Clinical Practice Guideline for Screening and Management of High Blood Pressure in Children and Adolescents. Pediatrics. 2017 Sep;140(3):e20171904. doi: 10.1542/peds.2017-1904. Epub 2017 Aug 21. PMID: 28827377.
* Heleno P, Emerick L, Mourão N, Pereira D, Santos I, Oliveira AS, Santos L, Bila W, Romano MC, Lamounier J. Systemic arterial hypertension, blood pressure levels and associated factors in schoolchildren. Rev Assoc Med Bras (1992). 2017 Oct;63(10):869-875. doi: 10.1590/1806-9282.63.10.869. PMID: 29267488.
* Starr MC, Flynn JT. Neonatal hypertension: cases, causes, and clinical approach. Pediatr Nephrol. 2019 May;34(5):787-799. doi: 10.1007/s00467-018-3977-4. Epub 2018 May 28. PMID: 29808264; PMCID: PMC6261698.
* Acierno MJ, Brown S, Coleman AE, Jepson RE, Papich M, Stepien RL, Syme HM. ACVIM consensus statement: Guidelines for the identification, evaluation, and management of systemic hypertension in dogs and cats. J Vet Intern Med. 2018 Nov;32(6):1803-1822. doi: 10.1111/jvim.15331. Epub 2018 Oct 24. PMID: 30353952; PMCID: PMC6271319.
* Gall E, Chaudhuri A, South AM. Peak blood pressure and prediction of posterior reversible encephalopathy syndrome in children. Pediatr Nephrol. 2020 Oct;35(10):1967-1975. doi: 10.1007/s00467-020-04577-5. Epub 2020 May 8. PMID: 32385528; PMCID: PMC8086820.
* Satoh M, Metoki H, Kikuya M, Murakami T, Tatsumi Y, Tsubota-Utsugi M, Hirose T, Hara A, Nomura K, Asayama K, Hozawa A, Imai Y, Ohkubo T. Proposal of reference value for day-to-day blood pressure variability based on two outcomes: the Ohasama study. J Hypertens. 2024 Oct 1;42(10):1769-1776. doi: 10.1097/HJH.0000000000003800. Epub 2024 Jun 20. PMID: 38973595.
* E L, C RO, G M, A D, S E, V HC, Z K, M L, D P, N P, T S, C S, S S, J R, B GL. Blood pressure values in healthy normal weight children and adolescents in eight European countries: auscultatory and oscillometric measurements. Eur J Intern Med. 2025 Sep;139:106382. doi: 10.1016/j.ejim.2025.06.011. Epub 2025 Jun 19. PMID: 40541458.
* Janssen EBNJ, Alers RJ, Mulder EG, Morina-Shijaku E, van der Vlugt MJ, Pustjens TFS, Dinh THT, van 't Hof AWJ, Spaanderman MEA, Ghossein-Doha C. Female- and age-specific reference values for blood pressure and its relationship with cardiac aberrations after pre-eclampsia. Eur J Prev Cardiol. 2026 May 15;33(7):1072-1081. doi: 10.1093/eurjpc/zwaf434. PMID: 40662521.
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