Gigapascals to Millipascals Converter
Enter the pressure in gigapascals below to convert it to millipascals.
Convert Gigapascals to Millipascals
Enter a value in gigapascals (GPa) to convert to millipascals (mPa).
Gigapascal to Millipascal Conversion Table
Table showing various gigapascal measurements converted to millipascals. Click any preset value or arrow to load it into the converter.
| Gigapascals (GPa) | Millipascals (mPa) |
|---|---|
| 0.0000001 GPa | 100,000 mPa |
| 0.0000002 GPa | 200,000 mPa |
| 0.0000003 GPa | 300,000 mPa |
| 0.0000004 GPa | 400,000 mPa |
| 0.0000005 GPa | 500,000 mPa |
| 0.0000006 GPa | 600,000 mPa |
| 0.0000007 GPa | 700,000 mPa |
| 0.0000008 GPa | 800,000 mPa |
| 0.0000009 GPa | 900,000 mPa |
| 0.00000001 GPa | 10,000 mPa |
How to Convert Gigapascals to Millipascals
To convert gigapascals to millipascals, multiply the pressure by the following conversion ratio: 1e+12 millipascals/gigapascal.
Since one gigapascal is equal to 1e+12 millipascals, you can use this simple formula to convert:
The pressure in millipascals is equal to the pressure in gigapascals multiplied by 1e+12.
For example, here's how to convert 5 gigapascals to millipascals using the formula above.
How Many Millipascals Are in a Gigapascal?
There are 1e+12 millipascals in a gigapascal, which is why we use this value in the formula above.
Our gigapascal to millipascal calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Gigapascals and millipascals 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 Millipascal?
A millipascal is a unit of pressure equal to 1/1,000 of a pascal (0.001 Pa). One-thousandth of a Pascal. [2]
The millipascal is classified as a metric and SI-compatible unit of pressure. Millipascals can be abbreviated as mPa; for example, 1 millipascal can be written as 1 mPa.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millipascal (mPa) a convenient decimal multiple of the pascal (Pa).
In practice, millipascals (mPa) are widely used across fine-tolerance laboratory, analytical, and micro-scale pressure measurements within SI metric workflows, engineering documentation, and technical data sheets.
When converting pressure between gigapascals (GPa) and millipascals (mPa), keep full floating-point precision (1 GPa = 1e+12 mPa; 1 mPa = 1e-12 GPa) during intermediate calculations and round only the final millipascal figure to match your instrument tolerance.
More Gigapascal & Millipascal Conversions
Need to calculate in the opposite direction? Use our millipascals to gigapascals calculator to switch your starting unit immediately. You can also explore related tools such as converting millipascals to gigapascals, converting psi to bars, or converting bars to psi.
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 Millipascals (mPa)
- [2]NIST CUU SpecificationNIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Gigapascal (GPa) & Millipascal (mPa)
- [3]BIPM ReferenceBIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (GPa to mPa)