Bars to Gigapascals Converter
Enter the pressure in bars below to convert it to gigapascals.
Convert Bars to Gigapascals
Enter a value in bars (bar) to convert to gigapascals (GPa).
Bar to Gigapascal Conversion Table
Table showing various bar measurements converted to gigapascals. Click any preset value or arrow to load it into the converter.
| Bars (bar) | Gigapascals (GPa) |
|---|---|
| 1 bar | 0.0001 GPa |
| 2 bar | 0.0002 GPa |
| 2.5 bar | 0.00025 GPa |
| 5 bar | 0.0005 GPa |
| 10 bar | 0.001 GPa |
| 15 bar | 0.0015 GPa |
| 20 bar | 0.002 GPa |
| 25 bar | 0.0025 GPa |
| 30 bar | 0.003 GPa |
| 50 bar | 0.005 GPa |
How to Convert Bars to Gigapascals
To convert bars to gigapascals, multiply the pressure by the following conversion ratio: 0.0001 gigapascals/bar.
Since one bar is equal to 0.0001 gigapascals, you can use this simple formula to convert:
The pressure in gigapascals is equal to the pressure in bars multiplied by 0.0001.
For example, here's how to convert 5 bars to gigapascals using the formula above.
How Many Gigapascals Are in a Bar?
There are 0.0001 gigapascals in a bar, which is why we use this value in the formula above.
Our bar to gigapascal calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Bars and gigapascals are both units used to measure pressure. Keep reading to learn more about each unit.
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). [1]
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.
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 bars (bar) and gigapascals (GPa), keep full floating-point precision (1 bar = 0.0001 GPa; 1 GPa = 10,000 bar) during intermediate calculations and round only the final gigapascal figure to match your instrument tolerance.
More Bar & Gigapascal Conversions
Need to calculate in the opposite direction? Use our gigapascals to bars calculator to switch your starting unit immediately. You can also explore related tools such as converting gigapascals to bars, converting bars to psi, or converting bars to atmospheres.
Convert from Bars
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Bars (bar) to Gigapascals (GPa)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Bar (bar) & Gigapascal (GPa)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (bar to GPa)