Millibars to Gigapascals Converter
Enter the pressure in millibars below to convert it to gigapascals.
Convert Millibars to Gigapascals
Enter a value in millibars (mbar) to convert to gigapascals (GPa).
Millibar to Gigapascal Conversion Table
Table showing various millibar measurements converted to gigapascals. Click any preset value or arrow to load it into the converter.
| Millibars (mbar) | Gigapascals (GPa) |
|---|---|
| 1 mbar | 0.0000001 GPa |
| 10 mbar | 0.000001 GPa |
| 100 mbar | 0.00001 GPa |
| 1,000 mbar | 0.0001 GPa |
| 10,000 mbar | 0.001 GPa |
| 100,000 mbar | 0.01 GPa |
| 1,000,000 mbar | 0.1 GPa |
| 5,000,000 mbar | 0.5 GPa |
| 10,000,000 mbar | 1 GPa |
| 25,400,000 mbar | 2.54 GPa |
How to Convert Millibars to Gigapascals
To convert millibars to gigapascals, multiply the pressure by the following conversion ratio: 0.0000001 gigapascals/millibar.
Since one millibar is equal to 0.0000001 gigapascals, you can use this simple formula to convert:
The pressure in gigapascals is equal to the pressure in millibars multiplied by 0.0000001.
For example, here's how to convert 5 millibars to gigapascals using the formula above.
How Many Gigapascals Are in a Millibar?
There are 0.0000001 gigapascals in a millibar, which is why we use this value in the formula above.
Our millibar to gigapascal calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Millibars and gigapascals are both units used to measure pressure. Keep reading to learn more about each unit.
What Is a Millibar?
A millibar is a unit of pressure equal to 100 pascals (Pa), the base unit for pressure. Meteorological pressure unit equal to 1/1000 of a bar (100 Pa = 1 hPa). [1]
The millibar is classified as a metric and SI-compatible unit of pressure. Millibars can be abbreviated as mbar; for example, 1 millibar can be written as 1 mbar.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millibar (mbar) a convenient decimal multiple of the bar (100,000 Pa).
In practice, millibars (mbar) are widely used across standard pressure applications within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Gigapascal?
A gigapascal is a unit of pressure equal to 1,000,000,000 pascals (Pa), the base unit for pressure. Equal to 1,000,000,000 Pascals (1,000 MPa), used for elastic modulus of metals and diamond. [2]
The gigapascal is classified as an International System of Units (SI) unit of pressure. Gigapascals can be abbreviated as GPa; for example, 1 gigapascal can be written as 1 GPa.
In the metric system, "giga" is the standard SI prefix for billions, or 10⁹. This makes the gigapascal (GPa) a convenient decimal multiple of the pascal (Pa).
In practice, gigapascals (GPa) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
When converting pressure between millibars (mbar) and gigapascals (GPa), keep full floating-point precision (1 mbar = 0.0000001 GPa; 1 GPa = 10,000,000 mbar) during intermediate calculations and round only the final gigapascal figure to match your instrument tolerance.
More Millibar & Gigapascal Conversions
Need to calculate in the opposite direction? Use our gigapascals to millibars calculator to switch your starting unit immediately. You can also explore related tools such as converting gigapascals to millibars, converting psi to bars, or converting bars to psi.
Convert from Millibars
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Millibars (mbar) to Gigapascals (GPa)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Millibar (mbar) & Gigapascal (GPa)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (mbar to GPa)