How do you convert atmospheres to gigapascals?

To convert atmospheres (atm) to gigapascals (GPa), multiply the pressure in atmospheres by 0.00010132 (gigapascals = atmospheres × 0.00010132).

What is 5 atmospheres in gigapascals?

5 atmospheres (5 atm) is equal to 0.00050662 gigapascals (0.00050662 GPa).

Which is larger, 1 standard atmosphere (atm) or 1 gigapascal (GPa)?

One gigapascal (GPa) is larger than one standard atmosphere (atm). Specifically, 1 GPa equals 9,869.23267 atm, while 1 atm is 0.00010132 GPa.

How do I convert back from gigapascals (GPa) to atmospheres (atm)?

To reverse the calculation from GPa to atm, multiply your gigapascal value by the inverse factor 9,869.23267 (or divide by 0.00010132). You can also click the Swap button in the tool above to flip directions in one click.

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

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 atm ≈ 0.00 GPa). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Atmospheres to Gigapascals Converter

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

Gigapascals to Atmospheres (GPa → atm)

Convert Atmospheres to Gigapascals

Enter a value in atmospheres (atm) to convert to gigapascals (GPa).

Value (atm)

From

Result

•

0.000506625gigapascals

5 atm = 0.000506625 GPa

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 atm

Pascals506,625 Pa

Kilopascals506.625 kPa

Bars5.06625 bar

PSI73.47974 psi

Suggested Conversions

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

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Standard Atmosphere to Gigapascal Conversion Table

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

Atmospheres (atm)	Gigapascals (GPa)
1 atm	0.000101325 GPa
2 atm	0.00020265 GPa
2.5 atm	0.000253313 GPa
5 atm	0.000506625 GPa
10 atm	0.0010133 GPa
15 atm	0.0015199 GPa
20 atm	0.0020265 GPa
25 atm	0.0025331 GPa
30 atm	0.0030397 GPa
50 atm	0.0050662 GPa

How to Convert Atmospheres to Gigapascals

To convert atmospheres to gigapascals, multiply the pressure by the following conversion ratio: 0.000101325 gigapascals/standard atmosphere.

Since one standard atmosphere is equal to 0.000101325 gigapascals, you can use this simple formula to convert:

gigapascals = atmospheres × 0.000101325

The pressure in gigapascals is equal to the pressure in atmospheres multiplied by 0.000101325.

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

gigapascals = (5 atm × 0.000101325) = 0.000506625 GPa

How Many Gigapascals Are in a Standard Atmosphere?

There are 0.000101325 gigapascals in a standard atmosphere, which is why we use this value in the formula above.

1 atm = 0.000101325 GPa|1 GPa = 9,869.2326672 atm

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

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

What Is a Standard Atmosphere?

A standard atmosphere is a unit of pressure equal to 101,325 pascals (Pa), the base unit for pressure. Standard sea-level atmospheric pressure defined as 101,325 Pascals. [1]

The standard atmosphere is classified as a standard unit of pressure. Atmospheres can be abbreviated as atm; for example, 1 standard atmosphere can be written as 1 atm.

When working with atmospheres (atm) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, atmospheres (atm) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within international standard workflows, engineering documentation, and technical data sheets.

Learn more about atmospheres 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 atmospheres (atm) and gigapascals (GPa), keep full floating-point precision (1 atm = 0.000101325 GPa; 1 GPa = 9,869.2326672 atm) during intermediate calculations and round only the final gigapascal figure to match your instrument tolerance.

More Standard Atmosphere & Gigapascal Conversions

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

Convert from Atmospheres

Convert to Gigapascals

Frequently Asked Questions

There are 0.00010132 gigapascals (GPa) in 1 standard atmosphere (atm). Conversely, 1 gigapascal (GPa) is equal to 9,869.23267 atmospheres (atm).

Pressure Converter

Quick Info

Direct Factor: 1 standard atmosphere (atm) equals 0.00010132 gigapascals (GPa).
Inverse Factor: 1 gigapascal (GPa) equals 9,869.23267 atmospheres (atm).
Formula: gigapascals = atmospheres × 0.00010132.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Standard Atmosphere (atm)

Standard sea-level atmospheric pressure defined as 101,325 Pascals.

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

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