Convert Atmospheres to Gigapascals
Instantly convert Atmospheres (atm) to Gigapascals (GPa) with our free online calculator.
Formula: atm to GPa — multiply by 1.0132e-4
Reference Table
| Atmospheres (atm) | Gigapascals (GPa) |
|---|---|
| 1 | 0.000101325 |
| 5 | 0.000506625 |
| 10 | 0.00101325 |
| 25 | 0.00253312 |
| 50 | 0.00506625 |
| 100 | 0.0101325 |
How to Convert Atmospheres to Gigapascals
Formula
To convert Atmospheres (atm) to Gigapascals (GPa): multiply by 1.0132e-4
Step-by-Step
- Start with your value in Atmospheres (atm).
- Multiply by 1.0132e-4 to perform the conversion.
- The result is your value expressed in Gigapascals (GPa).
Conversion Factor
1 atm = 0.000101325 GPa
Reverse Factor
1 GPa = 9869.23 atm
Worked Example
Convert 25 Atmospheres to Gigapascals: 25 atm = 0.00253312 GPa
About Atmosphere (atm)
A non-SI unit of pressure defined as exactly 101,325 pascals, corresponding to the standard sea-level atmospheric pressure as adopted by ISO 2533 and the BIPM SI Brochure. Atmospheres are the default reference pressure in physical chemistry (Standard Temperature and Pressure conventions: 1 atm at 273.15 K under IUPAC's 'STP' definition, though IUPAC has since moved to 1 bar STP), in commercial diving (depths are quoted in atmospheres absolute, with each 10 m of seawater adding ~1 atm), and in pressure-sensitive materials research where vapor pressure and saturation data are tabulated at 1 atm. A common pitfall: the "technical atmosphere" (at, 98,066.5 Pa = 1 kgf/cm²) used in some legacy European and Japanese engineering is NOT the same as the standard atmosphere — older pressure-vessel drawings can read 100 at and mean either depending on context. 1 atm = 1.01325 bar = 14.696 psi = 760 mmHg = 760 torr.
About Gigapascal (GPa)
A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). Gigapascals are the standard unit for reporting elastic-modulus and material-stiffness properties — Young's modulus of structural steel is ~200-210 GPa, aluminum alloys ~69-72 GPa, titanium ~110 GPa, concrete ~25-35 GPa, single-crystal diamond ~1,050-1,200 GPa, and CFRP composite ~150-230 GPa (longitudinal). MatWeb, NIST's MMP database, and the ASM Handbook tabulate elastic constants in GPa. GPa is also the working unit for ultra-high-pressure scientific experiments: diamond-anvil cell measurements (currently extending past 1,000 GPa = 1 TPa for studies of metallic hydrogen and Earth-core conditions), shock-wave equation-of-state research at national labs (LANL, LLNL, Sandia), and geophysics interior models — Earth's outer core lies between roughly 135 and 330 GPa. 1 GPa = 10,000 bar = 145,038 psi.
Quick Facts
- 1 Atmosphere equals 0.000101325 Gigapascals
- 1 Gigapascal equals 9869.23 Atmospheres
- Atmosphere is a unit of pressure
- Gigapascal is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Gigapascal belongs to the metric system
Common Atmosphere to Gigapascal Conversions
| Atmospheres (atm) | Gigapascals (GPa) |
|---|---|
| 0.1 | 0.0000101325 |
| 0.5 | 0.0000506625 |
| 1 | 0.000101325 |
| 2 | 0.00020265 |
| 5 | 0.000506625 |
| 10 | 0.00101325 |
| 14.696 | 0.00148907 |
| 15 | 0.00151987 |
| 20 | 0.0020265 |
| 25 | 0.00253312 |
| 50 | 0.00506625 |
| 100 | 0.0101325 |
| 150 | 0.0151988 |
| 200 | 0.020265 |
| 500 | 0.0506625 |
| 1000 | 0.101325 |
Understanding Atmospheres
The Atmosphere (symbol: atm) is a unit of pressure. A non-SI unit of pressure defined as exactly 101,325 pascals, corresponding to the standard sea-level atmospheric pressure as adopted by ISO 2533 and the BIPM SI Brochure. Atmospheres are the default reference pressure in physical chemistry (Standard Temperature and Pressure conventions: 1 atm at 273.15 K under IUPAC's 'STP' definition, though IUPAC has since moved to 1 bar STP), in commercial diving (depths are quoted in atmospheres absolute, with each 10 m of seawater adding ~1 atm), and in pressure-sensitive materials research where vapor pressure and saturation data are tabulated at 1 atm. A common pitfall: the "technical atmosphere" (at, 98,066.5 Pa = 1 kgf/cm²) used in some legacy European and Japanese engineering is NOT the same as the standard atmosphere — older pressure-vessel drawings can read 100 at and mean either depending on context. 1 atm = 1.01325 bar = 14.696 psi = 760 mmHg = 760 torr.
Atmospheres are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Gigapascals
The Gigapascal (symbol: GPa) is a unit of pressure. A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). Gigapascals are the standard unit for reporting elastic-modulus and material-stiffness properties — Young's modulus of structural steel is ~200-210 GPa, aluminum alloys ~69-72 GPa, titanium ~110 GPa, concrete ~25-35 GPa, single-crystal diamond ~1,050-1,200 GPa, and CFRP composite ~150-230 GPa (longitudinal). MatWeb, NIST's MMP database, and the ASM Handbook tabulate elastic constants in GPa. GPa is also the working unit for ultra-high-pressure scientific experiments: diamond-anvil cell measurements (currently extending past 1,000 GPa = 1 TPa for studies of metallic hydrogen and Earth-core conditions), shock-wave equation-of-state research at national labs (LANL, LLNL, Sandia), and geophysics interior models — Earth's outer core lies between roughly 135 and 330 GPa. 1 GPa = 10,000 bar = 145,038 psi.
It belongs to the metric measurement system.
Gigapascals are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Atmospheres to Gigapascals?
Engineers, mechanics, and scientists frequently need to convert pressure between Atmospheres and Gigapascals when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Atmospheres to Gigapascals?
A non-SI unit of pressure defined as exactly 101,325 pascals, corresponding to the standard sea-level atmospheric pressure as adopted by ISO 2533 and the BIPM SI Brochure. To convert Atmospheres to Gigapascals, multiply by 1.0132e-4. For example, 25 atm equals 0.00253312 GPa.
How many Gigapascals are in 1 Atmosphere?
There are 0.000101325 Gigapascals in 1 Atmosphere.
How many Atmospheres are in 1 Gigapascal?
There are 9869.23 Atmospheres in 1 Gigapascal.
What is the formula for Atmosphere to Gigapascal conversion?
The formula is: multiply by 1.0132e-4. This means 1 atm = 0.000101325 GPa.
Is a Atmosphere bigger than a Gigapascal?
Yes. One Atmosphere is larger than one Gigapascal because 1 atm equals 0.000101325 GPa, which is less than 1.
When do you need to convert between Atmospheres and Gigapascals?
A metric unit of pressure equal to exactly 1,000,000,000 pascals (1,000 MPa). Atmosphere and Gigapascal are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.