Gigapascals to PSI Converter
Enter the pressure in gigapascals below to convert it to psi.
Convert Gigapascals to PSI
Enter a value in gigapascals (GPa) to convert to psi (psi).
Gigapascal to Pounds per Square Inch Conversion Table
Table showing various gigapascal measurements converted to psi. Click any preset value or arrow to load it into the converter.
| Gigapascals (GPa) | PSI (psi) |
|---|---|
| 0.0000001 GPa | 0.0145038 psi |
| 0.0000002 GPa | 0.0290075 psi |
| 0.0000003 GPa | 0.0435113 psi |
| 0.0000004 GPa | 0.0580151 psi |
| 0.0000005 GPa | 0.0725189 psi |
| 0.0000006 GPa | 0.0870226 psi |
| 0.0000007 GPa | 0.1015264 psi |
| 0.0000008 GPa | 0.1160302 psi |
| 0.0000009 GPa | 0.130534 psi |
| 0.00000001 GPa | 0.0014504 psi |
How to Convert Gigapascals to PSI
To convert gigapascals to psi, multiply the pressure by the following conversion ratio: 145,037.7377302 psi/gigapascal.
Since one gigapascal is equal to 145,037.7377302 psi, you can use this simple formula to convert:
The pressure in psi is equal to the pressure in gigapascals multiplied by 145,037.7377302.
For example, here's how to convert 5 gigapascals to psi using the formula above.
How Many PSI Are in a Gigapascal?
There are 145,037.7377302 psi in a gigapascal, which is why we use this value in the formula above.
Our gigapascal to pounds per square inch calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Gigapascals and psi 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 Pounds per Square Inch?
A pounds per square inch is a unit of pressure equal to 6,894.7572932 pascals (Pa), the base unit for pressure. Imperial & US pressure unit equal to 1 pound-force per square inch (6.89476 kPa). [2]
The pounds per square inch is classified as a US customary and imperial unit of pressure. PSI can be abbreviated as psi; for example, 1 pounds per square inch can be written as 1 psi.
When working with psi (psi) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, psi (psi) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within US customary and imperial workflows, engineering documentation, and technical data sheets.
When converting pressure between gigapascals (GPa) and psi (psi), keep full floating-point precision (1 GPa = 145,037.7377302 psi; 1 psi = 0.000006895 GPa) during intermediate calculations and round only the final pounds per square inch figure to match your instrument tolerance.
More Gigapascal & Pounds per Square Inch Conversions
Need to calculate in the opposite direction? Use our psi to gigapascals calculator to switch your starting unit immediately. You can also explore related tools such as converting psi to gigapascals, converting bars to psi, or converting kilopascals to psi.
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 PSI (psi)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Gigapascal (GPa) & Pounds per Square Inch (psi)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (GPa to psi)