Gigapascals to Hectopascals Converter
Enter the pressure in gigapascals below to convert it to hectopascals.
Convert Gigapascals to Hectopascals
Enter a value in gigapascals (GPa) to convert to hectopascals (hPa).
Gigapascal to Hectopascal Conversion Table
Table showing various gigapascal measurements converted to hectopascals. Click any preset value or arrow to load it into the converter.
How to Convert Gigapascals to Hectopascals
To convert gigapascals to hectopascals, multiply the pressure by the following conversion ratio: 10,000,000 hectopascals/gigapascal.
Since one gigapascal is equal to 10,000,000 hectopascals, you can use this simple formula to convert:
The pressure in hectopascals is equal to the pressure in gigapascals multiplied by 10,000,000.
For example, here's how to convert 5 gigapascals to hectopascals using the formula above.
How Many Hectopascals Are in a Gigapascal?
There are 10,000,000 hectopascals in a gigapascal, which is why we use this value in the formula above.
Our gigapascal to hectopascal calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Gigapascals and hectopascals 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 Hectopascal?
A hectopascal is a unit of pressure equal to 100 pascals (Pa), the base unit for pressure. Equal to 100 Pascals (identical to 1 millibar). [2]
The hectopascal is classified as a metric and SI-compatible unit of pressure. Hectopascals can be abbreviated as hPa; for example, 1 hectopascal can be written as 1 hPa.
In the metric system, "hecto" is the standard SI prefix for hundreds, or 10². This makes the hectopascal (hPa) a convenient decimal multiple of the pascal (Pa).
In practice, hectopascals (hPa) are widely used across standard pressure applications within SI metric workflows, engineering documentation, and technical data sheets.
When converting pressure between gigapascals (GPa) and hectopascals (hPa), keep full floating-point precision (1 GPa = 10,000,000 hPa; 1 hPa = 0.0000001 GPa) during intermediate calculations and round only the final hectopascal figure to match your instrument tolerance.
More Gigapascal & Hectopascal Conversions
Need to calculate in the opposite direction? Use our hectopascals to gigapascals calculator to switch your starting unit immediately. You can also explore related tools such as converting hectopascals to gigapascals, converting pascals to hectopascals, or converting inches of mercury to hectopascals.
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 Hectopascals (hPa)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Gigapascal (GPa) & Hectopascal (hPa)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (GPa to hPa)