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    Converters/Pressure Converter

    Pressure Converter

    Convert between pascal, kilopascal, megapascal, bar, psi, atmosphere, torr, mmHg, inHg, and mmH₂O.

    Unit Converters
    Converter

    Converter

    Ready to Convert

    Enter a value and click Convert to see all conversions.

    Popular Conversions

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    Back to all converters

    What is Pressure Converter?

    The Pressure Converter is a free online tool that helps you convert values between different units of pressure. Convert between pascal, kilopascal, megapascal, bar, psi, atmosphere, torr, mmHg, inHg, and mmH₂O. This tool provides instant, accurate results with support for all major unit conversions in this category.

    How the Conversion Works

    Pressure units are converted to pascals. For example: 1 bar = 100,000 Pa, 1 psi = 6894.76 Pa, 1 atm = 101,325 Pa.

    How to Use This Converter

    Using the Pressure Converter is simple: 1. Enter the numeric value you want to convert in the input field 2. Select the unit you are converting from using the first dropdown (available units: Pascal (Pa), Kilopascal (kPa), Megapascal (MPa), Bar (bar), PSI (psi), and 5 more) 3. Select the unit you are converting to using the second dropdown 4. Click "Convert" to see the result instantly 5. Use the "Swap" button to quickly reverse the conversion direction 6. View the "All Conversions" table to see the value in every available unit

    Example Conversions

    Here are some common conversions you can perform with this tool: 1 psi → ? bar, 1 bar → ? psi, 1 atm → ? kPa Try clicking any of the "Popular Conversions" buttons above to instantly set up these conversions. For example, you can quickly convert between metric and imperial units, which is especially useful when working with international measurements or specifications.

    Benefits and Use Cases

    Critical for automotive, HVAC, scuba diving, weather monitoring, and industrial processes. Important for mechanics, engineers, divers, and meteorologists.

    Common Mistakes to Avoid

    Avoid these common pitfalls when using the Pressure Converter: - Confusing bar with psi (they are very different magnitudes — 1 bar ≈ 14.5 psi) - Using the wrong reference (gauge pressure vs. absolute pressure) - Forgetting that mmHg and torr are slightly different at non-standard temperatures - Confusing mmH₂O with mmHg (water is much less dense than mercury) Being aware of these issues will help you get accurate conversions every time.

    Related Tools

    Force Converter
    Density Converter
    Temperature Converter

    Conclusion

    The Pressure Converter is a free, accurate tool that handles all standard unit conversions instantly. Whether you are working on a project, studying, shopping internationally, or just curious, this converter ensures you get precise results every time. For other conversions, try our Force Converter and Density Converter. Try it now with your own values above.

    Frequently Asked Questions

    What is the difference between bar and psi?

    1 bar equals approximately 14.504 psi. Bar is commonly used in metric systems, while psi is used in imperial systems.

    What is standard atmospheric pressure?

    Standard atmospheric pressure (1 atm) equals 101.325 kPa, 14.696 psi, or 760 mmHg.

    How do I convert kPa to psi?

    Multiply kilopascals by 0.14504 to get psi. For example, 100 kPa ≈ 14.504 psi.

    What is the difference between gauge pressure and absolute pressure?

    Gauge pressure excludes atmospheric pressure and reads zero at sea level. Absolute pressure includes atmospheric pressure: absolute = gauge + 1 atm.

    What is torr and how is it related to mmHg?

    1 torr equals 1 mmHg for practical purposes. Both measure pressure, with torr named after Evangelista Torricelli, inventor of the barometer.

    How do I convert bar to kPa?

    Multiply bar by 100 to get kilopascals. 1 bar equals exactly 100 kPa, making it a convenient metric unit.

    What is mmH₂O used for?

    mmH₂O (millimeters of water) is used to measure low pressures in HVAC systems, gas pressure, and medical ventilators. 1 mmH₂O ≈ 9.80665 Pa.