Gigapascal (GPa)
Exactly one billion pascals.
What is a gigapascal?
- Symbol
- GPa
- Quantity
- Pressure
- Unit system
- SI
- Definition
- Exactly one billion pascals.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for the stiffness (Young's modulus) of materials such as steel and carbon fiber.
Gigapascal in other pressure units
- 1 GPa = 1000000000 PaPascal
- 1 GPa = 10000000 hPaHectopascal
- 1 GPa = 1000000 kPaKilopascal
- 1 GPa = 1000 MPaMegapascal
- 1 GPa = 10000000 mbarMillibar
- 1 GPa = 10000 barBar
- 1 GPa ≈ 9869.232667 atmStandard atmosphere
- 1 GPa ≈ 10197.16213 atTechnical atmosphere
- 1 GPa ≈ 7500616.827 TorrTorr
- 1 GPa ≈ 7500615.758 mmHgMillimeter of mercury
- 1 GPa ≈ 145037.7377 psiPound-force per square inch
- 1 GPa ≈ 145.0377377 ksiKilopound-force per square inch
Gigapascal quick reference
| Gigapascal | Bar | Pound-force per square inch | Pascal |
|---|---|---|---|
| 1 GPa | = 10000 bar | ≈ 145037.7377 psi | = 1000000000 Pa |
| 10 GPa | = 100000 bar | ≈ 1450377.377 psi | = 10000000000 Pa |
| 100 GPa | = 1000000 bar | ≈ 14503773.77 psi | = 100000000000 Pa |
| 1000 GPa | = 10000000 bar | ≈ 145037737.7 psi | = 1000000000000 Pa |
Where the gigapascal fits
The next smaller pressure unit is the ksi (ksi). 1 GPa ≈ 145.0377377 ksi, and 1 ksi ≈ 0.006894757293 GPa.
Frequently asked questions
- How many bars are in one gigapascal?
- One gigapascal = 10000 bar (bars).
- How many psi are in one gigapascal?
- One gigapascal ≈ 145037.7377 psi (psi).
- How many pascals are in one gigapascal?
- One gigapascal = 1000000000 Pa (pascals).