Conversor de Pressão
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
1 Pa = 0,001 kPa = 1e-6 MPa = 1e-5 bar = 9,86923e-6 atm = 0,000145038 psi = 0,00750062 mmHg
About this calculator
The UtilizAí Pressure Converter allows you to transform pressure values between the main units used globally: Pascal (Pa), kilopascal (kPa), megapascal (MPa), bar, atmosphere (atm), pound-force per square inch (psi), millimeter of mercury (mmHg), and torr. This tool is ideal for professionals and students in engineering, physics, meteorology, and mechanics who need to convert pressures in different contexts, such as hydraulic systems, equipment calibration, or gas studies.
It works simply: enter a numeric value in any input unit and select the source unit. Automatically, the converter calculates the equivalent in all other units using precise conversion factors. For example, 1 Pascal equals 0.001 kPa, 1e-5 bar, 9.86923e-6 atm, 0.000145038 psi, and 0.00750062 mmHg. Conversion is bidirectional, allowing you to start from any unit and get instant results.
Use this calculator whenever you need to match measurements from different instruments or technical standards. For instance, when reading a pressure gauge in psi and needing the value in bar for a project, or converting atmospheric pressure from mmHg to kPa in a weather report. It is also useful in laboratories, where devices may display pressure in torr while calculations require Pascal.
Cautions: double-check that the source unit is correct, as selection errors can lead to wrong results. Remember that psi is commonly used in countries like the United States, while bar is frequent in Europe. For high-precision applications, consider rounding; the converter uses factors with 6 decimal places, sufficient for most practical uses.
Frequently asked questions
What is the difference between torr and mmHg?
Torr and mmHg are equivalent for most practical purposes. 1 torr equals 1 mmHg, as both are based on the pressure exerted by a 1 mm column of mercury at 0 °C.
Can I convert pressure from psi to bar using this tool?
Yes, the converter supports psi and bar. Simply enter the value in psi and select psi as the source unit; the result in bar will be displayed automatically.
Does the converter work for very small or very large values?
Yes, the tool accepts any numeric value, including scientific notation. For extreme values, the result may be displayed in scientific notation if needed.
I need to convert pressure in Pascal to atmospheres. How do I do it?
Enter the value in Pascal and select Pa as the source unit. The equivalent in atm will be calculated automatically using the factor 1 Pa = 9.86923e-6 atm.
Is this calculator accurate for scientific applications?
Yes, the conversion factors are based on standard definitions. For critical applications, verify that the 6-decimal precision meets your needs.