Gigapascals to Bars Converter
Enter the pressure in gigapascals below to convert it to bars.
Convert Gigapascals to Bars
Enter a value in gigapascals (GPa) to convert to bars (bar).
Gigapascal to Bar Conversion Table
Table showing various gigapascal measurements converted to bars. Click any preset value or arrow to load it into the converter.
| Gigapascals (GPa) | Bars (bar) |
|---|---|
| 1 GPa | 10,000 bar |
| 2 GPa | 20,000 bar |
| 2.5 GPa | 25,000 bar |
| 5 GPa | 50,000 bar |
| 10 GPa | 100,000 bar |
| 15 GPa | 150,000 bar |
| 20 GPa | 200,000 bar |
| 25 GPa | 250,000 bar |
| 30 GPa | 300,000 bar |
| 50 GPa | 500,000 bar |
How to Convert Gigapascals to Bars
To convert gigapascals to bars, multiply the pressure by the following conversion ratio: 10,000 bars/gigapascal.
Since one gigapascal is equal to 10,000 bars, you can use this simple formula to convert:
The pressure in bars is equal to the pressure in gigapascals multiplied by 10,000.
For example, here's how to convert 5 gigapascals to bars using the formula above.
How Many Bars Are in a Gigapascal?
There are 10,000 bars in a gigapascal, which is why we use this value in the formula above.
Our gigapascal to bar calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Gigapascals and bars are both units used to measure pressure. Keep reading to learn more about each unit.
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. [1]
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.
What Is a Bar?
A bar is a unit of pressure equal to 100,000 pascals (Pa), the base unit for pressure. Metric pressure unit equal to 100,000 Pascals (100 kPa). [2]
The bar is classified as a metric and SI-compatible unit of pressure. Bars can be abbreviated as bar; for example, 1 bar can be written as 1 bar.
When working with bars (bar) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, bars (bar) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within SI metric workflows, engineering documentation, and technical data sheets.
When converting pressure between gigapascals (GPa) and bars (bar), keep full floating-point precision (1 GPa = 10,000 bar; 1 bar = 0.0001 GPa) during intermediate calculations and round only the final bar figure to match your instrument tolerance.
More Gigapascal & Bar Conversions
Need to calculate in the opposite direction? Use our bars to gigapascals calculator to switch your starting unit immediately. You can also explore related tools such as converting bars to gigapascals, converting psi to bars, or converting atmospheres to bars.
Convert from Gigapascals
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Gigapascals (GPa) to Bars (bar)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Gigapascal (GPa) & Bar (bar)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (GPa to bar)