Gigapascals to Atmospheres Converter
Enter the pressure in gigapascals below to convert it to atmospheres.
Convert Gigapascals to Atmospheres
Enter a value in gigapascals (GPa) to convert to atmospheres (atm).
Gigapascal to Standard Atmosphere Conversion Table
Table showing various gigapascal measurements converted to atmospheres. Click any preset value or arrow to load it into the converter.
| Gigapascals (GPa) | Atmospheres (atm) |
|---|---|
| 1 GPa | 9,869.2326672 atm |
| 2 GPa | 19,738.4653343 atm |
| 2.5 GPa | 24,673.0816679 atm |
| 5 GPa | 49,346.1633358 atm |
| 10 GPa | 98,692.3266716 atm |
| 15 GPa | 148,038.4900074 atm |
| 20 GPa | 197,384.6533432 atm |
| 25 GPa | 246,730.816679 atm |
| 30 GPa | 296,076.9800148 atm |
| 50 GPa | 493,461.633358 atm |
How to Convert Gigapascals to Atmospheres
To convert gigapascals to atmospheres, multiply the pressure by the following conversion ratio: 9,869.2326672 atmospheres/gigapascal.
Since one gigapascal is equal to 9,869.2326672 atmospheres, you can use this simple formula to convert:
The pressure in atmospheres is equal to the pressure in gigapascals multiplied by 9,869.2326672.
For example, here's how to convert 5 gigapascals to atmospheres using the formula above.
How Many Atmospheres Are in a Gigapascal?
There are 9,869.2326672 atmospheres in a gigapascal, which is why we use this value in the formula above.
Our gigapascal to standard atmosphere calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Gigapascals and atmospheres 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 Standard Atmosphere?
A standard atmosphere is a unit of pressure equal to 101,325 pascals (Pa), the base unit for pressure. Standard sea-level atmospheric pressure defined as 101,325 Pascals. [2]
The standard atmosphere is classified as a standard unit of pressure. Atmospheres can be abbreviated as atm; for example, 1 standard atmosphere can be written as 1 atm.
When working with atmospheres (atm) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, atmospheres (atm) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within international standard workflows, engineering documentation, and technical data sheets.
When converting pressure between gigapascals (GPa) and atmospheres (atm), keep full floating-point precision (1 GPa = 9,869.2326672 atm; 1 atm = 0.000101325 GPa) during intermediate calculations and round only the final standard atmosphere figure to match your instrument tolerance.
More Gigapascal & Standard Atmosphere Conversions
Need to calculate in the opposite direction? Use our atmospheres to gigapascals calculator to switch your starting unit immediately. You can also explore related tools such as converting atmospheres to gigapascals, converting bars to atmospheres, or converting torr to atmospheres.
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 Atmospheres (atm)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Gigapascal (GPa) & Standard Atmosphere (atm)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (GPa to atm)