How do you convert gigapascals to megapascals?

To convert gigapascals (GPa) to megapascals (MPa), multiply the pressure in gigapascals by 1,000 (megapascals = gigapascals × 1,000).

What is 5 gigapascals in megapascals?

5 gigapascals (5 GPa) is equal to 5,000 megapascals (5,000 MPa).

Which is larger, 1 gigapascal (GPa) or 1 megapascal (MPa)?

One gigapascal (GPa) is larger than one megapascal (MPa). Specifically, 1 GPa contains 1,000 MPa, whereas 1 MPa is 0.001 GPa.

How do I convert back from megapascals (MPa) to gigapascals (GPa)?

To reverse the calculation from MPa to GPa, multiply your megapascal value by the inverse factor 0.001 (or divide by 1,000). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round GPa to MPa results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 GPa ≈ 5,000.00 MPa). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Gigapascals to Megapascals Converter

Enter the pressure in gigapascals below to convert it to megapascals.

Megapascals to Gigapascals (MPa → GPa)

Convert Gigapascals to Megapascals

Enter a value in gigapascals (GPa) to convert to megapascals (MPa).

Value (GPa)

From

Result

•

5,000megapascals

5 GPa = 5,000 MPa

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 GPa

Pascals5.000000e+9 Pa

Kilopascals5,000,000 kPa

Bars50,000 bar

PSI725,188.68865108 psi

Atmospheres49,346.16334 atm

Suggested Conversions

Reference:NIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))

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Gigapascal to Megapascal Conversion Table

Table showing various gigapascal measurements converted to megapascals. Click any preset value or arrow to load it into the converter.

Gigapascals (GPa)	Megapascals (MPa)
1 GPa	1,000 MPa
2 GPa	2,000 MPa
2.5 GPa	2,500 MPa
5 GPa	5,000 MPa
10 GPa	10,000 MPa
15 GPa	15,000 MPa
20 GPa	20,000 MPa
25 GPa	25,000 MPa
30 GPa	30,000 MPa
50 GPa	50,000 MPa

How to Convert Gigapascals to Megapascals

To convert gigapascals to megapascals, multiply the pressure by the following conversion ratio: 1,000 megapascals/gigapascal.

Since one gigapascal is equal to 1,000 megapascals, you can use this simple formula to convert:

megapascals = gigapascals × 1,000

The pressure in megapascals is equal to the pressure in gigapascals multiplied by 1,000.

For example, here's how to convert 5 gigapascals to megapascals using the formula above.

megapascals = (5 GPa × 1,000) = 5,000 MPa

How Many Megapascals Are in a Gigapascal?

There are 1,000 megapascals in a gigapascal, which is why we use this value in the formula above.

1 GPa = 1,000 MPa|1 MPa = 0.001 GPa

Our gigapascal to megapascal calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Gigapascals and megapascals 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.

Learn more about gigapascals in our Pressure Converter.

What Is a Megapascal?

A megapascal is a unit of pressure equal to 1,000,000 pascals (Pa), the base unit for pressure. Equal to 1,000,000 Pascals (identically 1 N/mm²). [2]

The megapascal is classified as an International System of Units (SI) unit of pressure. Megapascals can be abbreviated as MPa; for example, 1 megapascal can be written as 1 MPa.

In the metric system, "mega" is the standard SI prefix for millions, or 10⁶. This makes the megapascal (MPa) a convenient decimal multiple of the pascal (Pa).

In practice, megapascals (MPa) 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.

Learn more about megapascals in our Pressure Converter.

When converting pressure between gigapascals (GPa) and megapascals (MPa), keep full floating-point precision (1 GPa = 1,000 MPa; 1 MPa = 0.001 GPa) during intermediate calculations and round only the final megapascal figure to match your instrument tolerance.

More Gigapascal & Megapascal Conversions

Need to calculate in the opposite direction? Use our megapascals to gigapascals calculator to switch your starting unit immediately. You can also explore related tools such as converting megapascals to gigapascals, converting psi to megapascals, or converting pascals to megapascals.

Convert from Gigapascals

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Frequently Asked Questions

There are 1,000 megapascals (MPa) in 1 gigapascal (GPa). Conversely, 1 megapascal (MPa) is equal to 0.001 gigapascals (GPa).

Pressure Converter

Quick Info

Direct Factor: 1 gigapascal (GPa) equals 1,000 megapascals (MPa).
Inverse Factor: 1 megapascal (MPa) equals 0.001 gigapascals (GPa).
Formula: megapascals = gigapascals × 1,000.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Gigapascal (GPa)

Equal to 1,000,000,000 Pascals (1,000 MPa), used for elastic modulus of metals and diamond.

Megapascal (MPa)

Equal to 1,000,000 Pascals (identically 1 N/mm²).

Pascal (Pa)

SI derived unit of pressure equal to 1 Newton per square meter (N/m²).

References

[1]NIST SP 811 · NIST SP 811 App. B.9 (Pressure & Stress)
Source
[2]NIST CUU · Derived SI Unit: Pascal (Pa)
Source
[3]BIPM · SI Brochure (9th Ed.) — Mechanics
Source

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References

NIST · BIPM · ISO

[1]
NIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Gigapascals (GPa) to Megapascals (MPa)
NIST SP 811 Standard
[2]
NIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Gigapascal (GPa) & Megapascal (MPa)
NIST CUU Specification
[3]
BIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (GPa to MPa)
BIPM Reference

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