Convert Gigapascals to Atmospheres (GPa to atm)
1 gigapascal (GPa) = 9869.232667 atmospheres (atm). 1 atm = 0.000101325 GPa. Example: 15 GPa = 15 × 9869.232667 = 148038.49 atm.
Also searched as gigapascals to atm, gigapascals in atm, gigapascals into atmospheres, GPa to atm, GPa in atmospheres, GPa into atmosphere, gigapascal to atmosphere, GPa to atmospheres converter and how many atmospheres in a gigapascal.
1 GPa = 9869.232667 atm
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigapascal to atmosphere converter to paste a column from Excel.
How to Convert Gigapascal to Atmosphere
- 1 GPa = 9869.232667 atm
- 1 atm = 0.000101325 GPa
- Example: convert 15 GPa to atm: 15 GPa = 15 × 9869.232667 atm = 148038.49 atm
Formula
atm = GPa × 9869.23266716
Derivation from SI units:
- 1 GPa = 10⁹ Pa = 1000 MPa = 1 kN/mm²
- 1 atm = 101 325 Pa (exact, by definition)
- 1 GPa = 1000000000 Pa ÷ 101325 Pa per atm = 9869.23266716 atm
Both units are defined exactly, so the factor is exact. Gigapascal definition: gigapascal; Atmosphere definition: atmosphere.
Worked examples
- A reading of 10 GPa converts to 98692.32667 atm.
10 GPa × 9869.232667 = 98692.32667 atm - A value of 190 GPa is 1875154.207 atm.
190 GPa × 9869.232667 = 1875154.207 atm
Gigapascal to Atmosphere conversion table
| Gigapascals (GPa) | Atmospheres (atm) |
|---|---|
| 0.5 GPa | 4934.616334 atm |
| 1 GPa | 9869.232667 atm |
| 2 GPa | 19738.46533 atm |
| 3 GPa | 29607.698 atm |
| 5 GPa | 49346.16334 atm |
| 10 GPa | 98692.32667 atm |
| 45 GPa | 444115.47 atm |
| 70 GPa | 690846.2867 atm |
| 110 GPa | 1085615.593 atm |
| 117 GPa | 1154700.222 atm |
| 190 GPa | 1875154.207 atm |
| 200 GPa | 1973846.533 atm |
| 210 GPa | 2072538.86 atm |
| 400 GPa | 3947693.067 atm |
| 1000 GPa | 9869232.667 atm |
Where it's used
Gigapascals are used for young's modulus and shear modulus of metals, ceramics and composites, while atmospheres appear in chemistry and gas laws (STP and NTP conditions). Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Gigapascal to other pressure units
| Conversion | 1 GPa equals |
|---|---|
| gigapascal to atmosphere | 9869.232667 atm |
| gigapascal to pascal | 1000000000 Pa |
| gigapascal to kilopascal | 1000000 kPa |
| gigapascal to ksi | 145.0377377 ksi |
| gigapascal to kilogram-force per square centimetre | 10197.16213 kgf/cm² |
| gigapascal to psi | 145037.7377 psi |
| gigapascal to bar | 10000 bar |
| gigapascal to millimeter of mercury | 7500615.758 mmHg |
Show 12 more units
| gigapascal to inch of water | 4014630.76 inH₂O |
|---|---|
| gigapascal to megapascal | 1000 MPa |
| gigapascal to newton per square millimetre | 1000 N/mm² |
| gigapascal to kilogram-force per square millimetre | 101.9716213 kgf/mm² |
| gigapascal to millibar | 10000000 mbar |
| gigapascal to torr | 7500616.827 Torr |
| gigapascal to millimeter of water | 101971621.3 mmH₂O |
| gigapascal to centimeter of water | 10197162.13 cmH₂O |
| gigapascal to inch of mercury | 295299.833 inHg |
| gigapascal to decibar | 100000 dbar |
| gigapascal to inch of water (60 °F) | 4018646.52 inH₂O (60 °F) |
| gigapascal to barye | 10000000000 Ba |
Frequently asked questions
How many atmospheres are in 1 gigapascal?
1 GPa = 9869.232667 atm.
How do I convert gigapascals to atmospheres?
Multiply the value in GPa by 9869.232667. For example, 15 GPa × 9869.232667 = 148038.49 atm.
Is the GPa to atm conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "atmosphere, standard (atm)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Gigapascals to Atmospheres (GPa to atm). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/gigapascal-to-atmosphere/
IEEE
Scientific Converters, "Convert Gigapascals to Atmospheres (GPa to atm)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/gigapascal-to-atmosphere/