Convert Gigapascals to psi (GPa to psi)
1 gigapascal (GPa) = 145037.7377 psi. 1 psi = 0.000006894757293 GPa. Example: 15 GPa = 15 × 145037.7377 = 2175566.066 psi.
Also searched as gigapascals to psi, gigapascals in psi, gigapascals into psi, GPa to psi, GPa in psi, GPa into psi, gigapascal to psi, GPa to psi converter and how many psi in a gigapascal.
1 GPa = 145037.7377 psi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk gigapascal to psi converter to paste a column from Excel.
How to Convert Gigapascal to psi
- 1 GPa = 145037.7377 psi
- 1 psi = 0.000006894757293 GPa
- Example: convert 15 GPa to psi: 15 GPa = 15 × 145037.7377 psi = 2175566.066 psi
Formula
psi = GPa × 145037.7377302
Derivation from SI units:
- 1 GPa = 10⁹ Pa = 1000 MPa = 1 kN/mm²
- 1 psi = 1 lbf/in² = (0.45359237 kg × 9.80665 m/s²) ÷ (0.0254 m)² = 6894.757293168 Pa
- 1 GPa = 1000000000 Pa ÷ 6894.757293168 Pa per psi = 145037.7377302 psi
Both units are defined exactly, so the factor is exact. Gigapascal definition: gigapascal; psi definition: psi.
Worked examples
- A reading of 10 GPa converts to 1450377.377 psi.
10 GPa × 145037.7377 = 1450377.377 psi - A value of 190 GPa is 27557170.17 psi.
190 GPa × 145037.7377 = 27557170.17 psi
Gigapascal to psi conversion table
| Gigapascals (GPa) | psi |
|---|---|
| 0.5 GPa | 72518.86887 psi |
| 1 GPa | 145037.7377 psi |
| 2 GPa | 290075.4755 psi |
| 3 GPa | 435113.2132 psi |
| 5 GPa | 725188.6887 psi |
| 10 GPa | 1450377.377 psi |
| 45 GPa | 6526698.198 psi |
| 70 GPa | 10152641.64 psi |
| 110 GPa | 15954151.15 psi |
| 117 GPa | 16969415.31 psi |
| 190 GPa | 27557170.17 psi |
| 200 GPa | 29007547.55 psi |
| 210 GPa | 30457924.92 psi |
| 400 GPa | 58015095.09 psi |
| 1000 GPa | 145037737.7 psi |
Where it's used
Gigapascals are used for young's modulus and shear modulus of metals, ceramics and composites, while psi appear in tyre pressure in the United States (about 30–35 psi for cars). 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 psi | 145037.7377 psi |
| 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 bar | 10000 bar |
| gigapascal to millimeter of mercury | 7500615.758 mmHg |
| gigapascal to inch of water | 4014630.76 inH₂O |
Show 12 more units
| gigapascal to atmosphere | 9869.232667 atm |
|---|---|
| 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 psi are in 1 gigapascal?
1 GPa = 145037.7377 psi.
How do I convert gigapascals to psi?
Multiply the value in GPa by 145037.7377. For example, 15 GPa × 145037.7377 = 2175566.066 psi.
Is the GPa to psi 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, "pound-force per square inch (psi)".
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 psi (GPa to psi). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/gigapascal-to-psi/
IEEE
Scientific Converters, "Convert Gigapascals to psi (GPa to psi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/gigapascal-to-psi/