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Blood Pressure Calculator

Health & Body

BP category, pulse pressure and reference tables

Quick Answer

Blood Pressure Calculator: BP category, pulse pressure and reference tables. Normal <120/80 · High-normal 120–139/80–89.

China guideline classification

High-normal

128/84 mmHg

US ACC/AHA classStage 1
Pulse pressure44mmHg
Mean arterial P99mmHg
AdviceReduce salt, exercise, monitor regularly

Systolic scale (mmHg)

Normal
High-normal
G1
G2
G3

Your SBP: 128 mmHg

Diastolic scale (mmHg)

Normal
High-normal
G1
G2
G3

Your DBP: 84 mmHg

Classification reference (China guideline / US ACC-AHA 2017)
CategorySBP (mmHg)DBP (mmHg)
Normal (both)< 120< 80
CN: High-normal120–13980–89
US: Elevated / Stage 1120–139<80 / 80–89
CN Grade 1 / US Stage 2140–15990–99
CN Grade 2160–179100–109
CN Grade 3 (severe)≥ 180≥ 110

Measurement tips

Rest 5 min before measuring; seated, arm at heart level; take 2–3 readings 1 min apart and average. Diagnosis requires repeated measurements on different days — never self-diagnose from a single reading. This tool is for reference only and is not medical advice.

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How to Use

  1. Enter body metrics: fill height, weight, age etc. as prompted by the Blood Pressure Calculator.
  2. Read value and grade: results appear instantly with an authority-based classification.
  3. Check reference tables: confirm your range and healthy targets against the tables on this page.
  4. Back-solve your goal: adjust inputs to see what it takes to reach a target.

Key Points

  • Blood Pressure Calculator is a free online health tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: BP category, pulse pressure and reference tables.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

BP categories (China 2024 guideline, mmHg)

Normal <120/80 · High-normal 120–139/80–89
Grade 1: 140–159/90–99 · Grade 2: 160–179/100–109 · Grade 3: ≥180/≥110
Pulse pressure = systolic − diastolic (normal 30–50); home threshold ≥135/85

FAQ

How do I use the Blood Pressure Calculator?
Open the page and fill in the input fields — results update automatically. BP category, pulse pressure and reference tables.
Are the results accurate?
Results follow published international standards (WHO, ACE, IOM) and are for reference only.
Can this replace medical advice?
No. Always consult a qualified healthcare professional for health decisions.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on all devices.

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Source & Updates

Based on WHO, ACE, IOM and other published international standards. Last updated: 2025-07

Authoritative sources:

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Blood Pressure Calculator[EB/OL]. https://www.yijiansuan.com/en/c/health/blood-pressure

Results provided by this tool are for reference only and do not constitute professional advice.