How do you convert psf to gigapascals?

To convert psf (psf) to gigapascals (GPa), multiply the pressure in psf by 4.788026e-8 (gigapascals = psf × 4.788026e-8).

What is 5 psf in gigapascals?

5 psf (5 psf) is equal to 2.394013e-7 gigapascals (2.394013e-7 GPa).

Which is larger, 1 pounds per square foot (psf) (psf) or 1 gigapascal (GPa)?

One gigapascal (GPa) is larger than one pounds per square foot (psf) (psf). Specifically, 1 GPa equals 20,885,434.23316576 psf, while 1 psf is 4.788026e-8 GPa.

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

To reverse the calculation from GPa to psf, multiply your gigapascal value by the inverse factor 20,885,434.23316576 (or divide by 4.788026e-8). You can also click the Swap button in the tool above to flip directions in one click.

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

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

psf to Gigapascals Converter

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

Gigapascals to psf (GPa → psf)

Convert psf to Gigapascals

Enter a value in psf (psf) to convert to gigapascals (GPa).

Value (psf)

From

Result

•

2.394013e-7gigapascals

5 psf = 2.394013e-7 GPa

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 psf

Pascals239.40129 Pa

Kilopascals0.2394 kPa

Bars0.00239401 bar

PSI0.03472 psi

Atmospheres0.0023627 atm

Suggested Conversions

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

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Pounds per Square Foot to Gigapascal Conversion Table

Table showing various pounds per square foot measurements converted to gigapascals. Click any preset value or arrow to load it into the converter.

psf (psf)	Gigapascals (GPa)
1 psf	0.000000048 GPa
10 psf	0.000000479 GPa
100 psf	0.000004788 GPa
1,000 psf	0.00004788 GPa
10,000 psf	0.000478803 GPa
100,000 psf	0.004788 GPa
1,000,000 psf	0.0478803 GPa
5,000,000 psf	0.2394013 GPa
10,000,000 psf	0.4788026 GPa
25,400,000 psf	1.2161586 GPa

How to Convert psf to Gigapascals

To convert psf to gigapascals, multiply the pressure by the following conversion ratio: 0.000000048 gigapascals/pounds per square foot.

Since one pounds per square foot is equal to 0.000000048 gigapascals, you can use this simple formula to convert:

gigapascals = psf × 0.000000048

The pressure in gigapascals is equal to the pressure in psf multiplied by 0.000000048.

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

gigapascals = (5 psf × 0.000000048) = 0.000000239 GPa

How Many Gigapascals Are in a Pounds per Square Foot?

There are 0.000000048 gigapascals in a pounds per square foot, which is why we use this value in the formula above.

1 psf = 0.000000048 GPa|1 GPa = 20,885,434.2331658 psf

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

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

What Is a Pounds per Square Foot?

A pounds per square foot is a unit of pressure equal to 47.880259 pascals (Pa), the base unit for pressure. Equal to 1/144 PSI (47.88 Pascals), used in aerodynamic and structural wind loading. [1]

The pounds per square foot is classified as a US customary and imperial unit of pressure. psf can be abbreviated as psf; for example, 1 pounds per square foot can be written as 1 psf.

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

In practice, psf (psf) are widely used across standard pressure applications within US customary and imperial workflows, engineering documentation, and technical data sheets.

Learn more about psf 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 psf (psf) and gigapascals (GPa), keep full floating-point precision (1 psf = 0.000000048 GPa; 1 GPa = 20,885,434.2331658 psf) during intermediate calculations and round only the final gigapascal figure to match your instrument tolerance.

More Pounds per Square Foot & Gigapascal Conversions

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

Convert from psf

Convert to Gigapascals

Frequently Asked Questions

There are 4.788026e-8 gigapascals (GPa) in 1 pounds per square foot (psf). Conversely, 1 gigapascal (GPa) is equal to 20,885,434.23316576 psf (psf).

Pressure Converter

Quick Info

Direct Factor: 1 pounds per square foot (psf) (psf) equals 4.788026e-8 gigapascals (GPa).
Inverse Factor: 1 gigapascal (GPa) equals 20,885,434.23316576 psf (psf).
Formula: gigapascals = psf × 4.788026e-8.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Pounds per Square Foot (psf) (psf)

Equal to 1/144 PSI (47.88 Pascals), used in aerodynamic and structural wind loading.

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

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