Real-Time Blood Pressure Converter
120/80 mmHg = 16.00/10.67 kPa
Conversion History
Advanced Conversion Tools
Mean Arterial Pressure
Calculate Mean Arterial Pressure (MAP) from systolic and diastolic values.
Quick Conversions
Common blood pressure conversions at a glance.
Pressure Categories
Check where your blood pressure falls according to medical guidelines.
Understanding Blood Pressure Units: A Comprehensive Guide
Blood pressure measurement is crucial for monitoring cardiovascular health. However, different countries and medical professionals use various units to express blood pressure values. This guide will help you understand these units and how to convert between them accurately.
Why Blood Pressure Unit Conversion Matters
Blood pressure is most commonly measured in millimeters of mercury (mmHg) in clinical settings worldwide. However, scientific literature and some countries use kilopascals (kPa) or other pressure units. Understanding how to convert between these units ensures accurate interpretation of medical data across different contexts.
Common Blood Pressure Units
| Unit | Full Name | Common Usage | Conversion to 1 mmHg |
|---|---|---|---|
| mmHg | Millimeters of Mercury | Clinical medicine worldwide | 1 mmHg |
| kPa | Kilopascals | Scientific research, some countries | 0.133322 kPa |
| atm | Atmospheres | Physics, engineering | 0.00131579 atm |
| psi | Pounds per Square Inch | Engineering, some medical devices | 0.0193368 psi |
| bar | Bar | Meteorology, some European countries | 0.00133322 bar |
How to Use This Blood Pressure Unit Converter
- Enter your blood pressure values - Input both systolic (upper) and diastolic (lower) values in the input fields.
- Select source and target units - Choose the unit you're converting from and the unit you want to convert to.
- Get instant results - The converter provides real-time conversion for both systolic and diastolic values.
- Check blood pressure categories - The tool automatically categorizes your blood pressure according to medical guidelines.
- Save conversions - Keep a history of your conversions for future reference.
Conversion Formula Reference
The standard conversion between mmHg and kPa is based on the definition of standard atmospheric pressure:
- 1 mmHg = 0.133322 kPa
- 1 kPa = 7.50062 mmHg
Our converter uses precise conversion factors for all supported units, ensuring medical-grade accuracy for healthcare professionals, patients, and researchers.
Blood Pressure Categories
Understanding what your blood pressure numbers mean is as important as the conversion itself. Here are the standard categories based on American Heart Association guidelines:
- Normal: Systolic less than 120 mmHg AND Diastolic less than 80 mmHg
- Elevated: Systolic 120-129 mmHg AND Diastolic less than 80 mmHg
- Hypertension Stage 1: Systolic 130-139 mmHg OR Diastolic 80-89 mmHg
- Hypertension Stage 2: Systolic 140 mmHg or higher OR Diastolic 90 mmHg or higher
- Hypertensive Crisis: Systolic higher than 180 mmHg AND/OR Diastolic higher than 120 mmHg