138 Pascals to Mbar

138 Pa = 1.38 mbar

Calculation: mbar = 138 Pa × 0.01 = 1.38 mbar

Pascal to Mbar Converter

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How much pressure is 138 Pa?

0.020 psi (0.138 kPa) is comparable to a laboratory vacuum, such as inside a glass bell jar.

What does 138 Pa look like?

Illustration of a vacuum bell jar
0.020 psi (0.138 kPa) is comparable to a laboratory vacuum, such as inside a glass bell jar.

How to Convert Pascal to Mbar

1 pascal = 0.01 mbar

Mbar = Pascal × 0.01

Example: 138 Pa × 0.01 = 1.38 mbar

Reverse Conversion

To convert mbar back to pascals:

  • Remember, 1 mbar equals 100 pascals.
  • To convert 1.38 mbar to Pa, multiply 1.38 x 100, resulting in 138 Pa.

138 Pa is also equal to:

  • 0.138 kPa
  • 0.00138 bar
  • 0.020015 psi
About these units

Pascal: SI derived unit of pressure equal to one newton per square meter (N/m²).

Mbar: Metric pressure unit equal to one-thousandth of a bar (0.001 bar) or 100 pascals.

Frequently Asked Questions

How much is 138 pascals in mbar?

138 pascals equals 1.38 mbar. This is calculated by multiplying 138 by the conversion factor 0.01.

What does 138 pascals look like in mbar?

138 pascals (1.38 mbar) is low pressure — sound pressure or gentle airflow.

How do you calculate 138 pascals to mbar?

Multiply 138 by the conversion factor 0.01. The calculation is 138 × 0.01 = 1.38 mbar. This factor is defined by international measurement standards.

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138 pascals = 1.38 mbar
138 pascals = 1.38 mbar — conversion chart

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For general conversions between pascals and mbar, see the pascals to mbar converter.

Also convert Pascals to:

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 atm = 101 325 Pa by definition (BIPM). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.