How do you convert ksi to gigapascals?

To convert ksi (ksi) to gigapascals (GPa), multiply the pressure in ksi by 0.00689475 (gigapascals = ksi × 0.00689475).

What is 5 ksi in gigapascals?

5 ksi (5 ksi) is equal to 0.03447 gigapascals (0.03447 GPa).

Which is larger, 1 kilopounds per square inch (ksi) (ksi) or 1 gigapascal (GPa)?

One gigapascal (GPa) is larger than one kilopounds per square inch (ksi) (ksi). Specifically, 1 GPa equals 145.03774 ksi, while 1 ksi is 0.00689475 GPa.

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

To reverse the calculation from GPa to ksi, multiply your gigapascal value by the inverse factor 145.03774 (or divide by 0.00689475). You can also click the Swap button in the tool above to flip directions in one click.

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

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 ksi ≈ 0.03 GPa). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

ksi to Gigapascals Converter

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

Gigapascals to ksi (GPa → ksi)

Convert ksi to Gigapascals

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

Value (ksi)

From

Result

•

0.034473786gigapascals

5 ksi = 0.034473786 GPa

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 ksi

Pascals34,473,786.46584 Pa

Kilopascals34,473.78647 kPa

Bars344.73786 bar

PSI5,000 psi

Atmospheres340.22982 atm

Suggested Conversions

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

[1–3] ↓

Kilopounds per Square Inch to Gigapascal Conversion Table

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

ksi (ksi)	Gigapascals (GPa)
1 ksi	0.0068948 GPa
2 ksi	0.0137895 GPa
2.5 ksi	0.0172369 GPa
5 ksi	0.0344738 GPa
10 ksi	0.0689476 GPa
15 ksi	0.1034214 GPa
20 ksi	0.1378951 GPa
25 ksi	0.1723689 GPa
30 ksi	0.2068427 GPa
50 ksi	0.3447379 GPa

How to Convert ksi to Gigapascals

To convert ksi to gigapascals, multiply the pressure by the following conversion ratio: 0.0068948 gigapascals/kilopounds per square inch.

Since one kilopounds per square inch is equal to 0.0068948 gigapascals, you can use this simple formula to convert:

gigapascals = ksi × 0.0068948

The pressure in gigapascals is equal to the pressure in ksi multiplied by 0.0068948.

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

gigapascals = (5 ksi × 0.0068948) = 0.0344738 GPa

How Many Gigapascals Are in a Kilopounds per Square Inch?

There are 0.0068948 gigapascals in a kilopounds per square inch, which is why we use this value in the formula above.

1 ksi = 0.0068948 GPa|1 GPa = 145.0377377 ksi

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

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

What Is a Kilopounds per Square Inch?

A kilopounds per square inch is a unit of pressure equal to 6,894,757.293168 pascals (Pa), the base unit for pressure. Materials engineering yield strength unit equal to 1,000 PSI (6.89476 MPa). [1]

The kilopounds per square inch is classified as a US customary unit of pressure. ksi can be abbreviated as ksi; for example, 1 kilopounds per square inch can be written as 1 ksi.

In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilopounds per square inch (ksi) a convenient decimal multiple of the pascal (Pa).

In practice, ksi (ksi) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within US customary workflows, engineering documentation, and technical data sheets.

Learn more about ksi 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 ksi (ksi) and gigapascals (GPa), keep full floating-point precision (1 ksi = 0.0068948 GPa; 1 GPa = 145.0377377 ksi) during intermediate calculations and round only the final gigapascal figure to match your instrument tolerance.

More Kilopounds per Square Inch & Gigapascal Conversions

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

Convert from ksi

Convert to Gigapascals

Frequently Asked Questions

There are 0.00689475 gigapascals (GPa) in 1 kilopounds per square inch (ksi). Conversely, 1 gigapascal (GPa) is equal to 145.03774 ksi (ksi).

Pressure Converter

Quick Info

Direct Factor: 1 kilopounds per square inch (ksi) (ksi) equals 0.00689475 gigapascals (GPa).
Inverse Factor: 1 gigapascal (GPa) equals 145.03774 ksi (ksi).
Formula: gigapascals = ksi × 0.00689475.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Kilopounds per Square Inch (ksi) (ksi)

Materials engineering yield strength unit equal to 1,000 PSI (6.89476 MPa).

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

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