Pressure Converter Online
Free online pressure converter. Convert between PSI, bar, atmospheres, pascals, mmHg, torr, and more. Instant, precise engineering results.
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Tip: Click any result row to instantly copy its value to clipboard
💡 Definition
Pressure Converter
- Pressure is force per unit area.
- The SI unit is the pascal (Pa), but many fields use bar, PSI, atmospheres, or mmHg.
- This converter handles all major pressure units used in engineering, meteorology, medicine, and science.
📖 How to use
Step by Step
- Enter a pressure value and choose your source unit from the Convert From dropdown
- All equivalent pressures appear instantly in the results grid
- The source unit row is highlighted in purple for clarity
- Click any result row to copy that value to your clipboard
🎯 Use cases
When to use
- Tire pressure conversions (PSI ↔ bar)
- Weather and atmospheric pressure readings
- Medical blood pressure unit conversions
- Industrial and hydraulic engineering calculations
Frequently Asked Questions
How many PSI is 1 bar?▾
One bar equals approximately 14.5038 PSI. Standard atmospheric pressure is about 14.696 PSI or 1.01325 bar.
What is standard atmospheric pressure?▾
Standard atmospheric pressure (1 atm) is defined as 101,325 pascals, which equals 1.01325 bar, 14.696 PSI, or 760 mmHg. It represents average sea-level air pressure.
What is mmHg used for?▾
Millimeters of mercury (mmHg), also called torr, is used primarily for measuring blood pressure and vacuum pressure. Normal blood pressure is about 120/80 mmHg.