How do you convert megapascals to gigapascals?

To convert megapascals (MPa) to gigapascals (GPa), multiply the pressure in megapascals by 0.001 (gigapascals = megapascals × 0.001).

What is 5 megapascals in gigapascals?

5 megapascals (5 MPa) is equal to 0.005 gigapascals (0.005 GPa).

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

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

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

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

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

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 MPa ≈ 0.01 GPa). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Megapascals to Gigapascals Converter

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

Gigapascals to Megapascals (GPa → MPa)

Convert Megapascals to Gigapascals

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

Value (MPa)

From

Result

•

0.005gigapascals

5 MPa = 0.005 GPa

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 MPa

Pascals5,000,000 Pa

Kilopascals5,000 kPa

Bars50 bar

PSI725.18869 psi

Atmospheres49.34616 atm

Suggested Conversions

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

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Megapascal to Gigapascal Conversion Table

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

Megapascals (MPa)	Gigapascals (GPa)
1 MPa	0.001 GPa
2 MPa	0.002 GPa
2.5 MPa	0.0025 GPa
5 MPa	0.005 GPa
10 MPa	0.01 GPa
15 MPa	0.015 GPa
20 MPa	0.02 GPa
25 MPa	0.025 GPa
30 MPa	0.03 GPa
50 MPa	0.05 GPa

How to Convert Megapascals to Gigapascals

To convert megapascals to gigapascals, multiply the pressure by the following conversion ratio: 0.001 gigapascals/megapascal.

Since one megapascal is equal to 0.001 gigapascals, you can use this simple formula to convert:

gigapascals = megapascals × 0.001

The pressure in gigapascals is equal to the pressure in megapascals multiplied by 0.001.

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

gigapascals = (5 MPa × 0.001) = 0.005 GPa

How Many Gigapascals Are in a Megapascal?

There are 0.001 gigapascals in a megapascal, which is why we use this value in the formula above.

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

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

Megapascals and gigapascals are both units used to measure pressure. Keep reading to learn more about each unit.

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). [1]

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.

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. [2]

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.

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

More Megapascal & Gigapascal Conversions

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

Convert from Megapascals

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Frequently Asked Questions

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

Pressure Converter

Quick Info

Direct Factor: 1 megapascal (MPa) equals 0.001 gigapascals (GPa).
Inverse Factor: 1 gigapascal (GPa) equals 1,000 megapascals (MPa).
Formula: gigapascals = megapascals ÷ 1000.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Megapascal (MPa)

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

Gigapascal (GPa)

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

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

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