Gigapascal is 1000000000 pascal units.
Gigapascals to Megapascals Converter — GPa to MPa
Convert Gigapascal (GPa) to Megapascal (MPa) using the exact conversion factor (1 gigapascal = 1,000 megapascal). See the formula, worked examples, and conversion table.
Gigapascals to Megapascals converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Megapascal is 1000000 pascal units.
Result = input x 1e+9 / 1e+6.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Gigapascals to Megapascals
Gigapascal and Megapascal both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Gigapascal is 1000000000 pascal units, and megapascal is 1000000 pascal units.
Formula
megapascals = gigapascals × 1000
This factor comes from each unit's defined relationship to the category's base unit: 1 gigapascal equals 1000000000 base units, and 1 megapascal equals 1000000 base units, so dividing one by the other gives the direct gigapascal-to-megapascal factor of 1000.
Simple example
1 GPa × 1000 = 1,000 MPa
1 gigapascal = 1,000 megapascals.
Real-world example
100 GPa × 1000 = 100,000 MPa
100 gigapascals = 100,000 megapascals.
Conversion table
| Gigapascal (GPa) | Megapascal (MPa) |
|---|---|
| 1 GPa | 1,000 MPa |
| 10 GPa | 10,000 MPa |
| 50 GPa | 50,000 MPa |
| 100 GPa | 100,000 MPa |
| 500 GPa | 500,000 MPa |
| 1,000 GPa | 1,000,000 MPa |
Reverse conversion: Megapascal to Gigapascal
1 MPa × 0.001 = 0.001 GPa
1 megapascal = 0.001 gigapascals.
gigapascals = megapascals × 0.001
For a page dedicated to this direction, see Megapascal to Gigapascal.
Understanding the Gigapascal (GPa)
Gigapascal is 1000000000 pascal units.
Understanding the Megapascal (MPa)
Megapascal is 1000000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megapascals are in 1 gigapascal?
1 gigapascal equals 1,000 megapascals, using the exact defined conversion factor rather than an estimate.
How do I convert gigapascal to megapascal?
Multiply the gigapascal value by 1000. The converter above does this instantly to whatever precision you set.
How do I convert megapascal back to gigapascal?
Use the reverse factor: 1 megapascal equals 0.001 gigapascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigapascal?
Gigapascal (GPa) is a unit of engineering.
What is a megapascal?
Megapascal (MPa) is a unit of engineering.
Is the gigapascal to megapascal conversion exact?
Yes. Both gigapascal and megapascal are defined by fixed standards rather than physical artifacts, so the factor of 1000 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.