Kips per square inch.
KSI to Gigapascals Converter — ksi to GPa
Convert KSI (ksi) to Gigapascal (GPa) using the exact conversion factor (1 ksi = 0.0068947573 gigapascal). See the formula, worked examples, and conversion table.
KSI to Gigapascals converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Gigapascal is 1000000000 pascal units.
Result = input x 6.89475729e+6 / 1e+9.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting KSI to Gigapascals
KSI and Gigapascal both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Kips per square inch, and gigapascal is 1000000000 pascal units.
Formula
gigapascals = ksi × 0.00689475729317
This factor comes from each unit's defined relationship to the category's base unit: 1 ksi equals 6894757.29317 base units, and 1 gigapascal equals 1000000000 base units, so dividing one by the other gives the direct ksi-to-gigapascal factor of 0.00689475729317.
Simple example
1 ksi × 0.006894757293 = 0.0068947573 GPa
1 ksi = 0.0068947573 gigapascals.
Real-world example
100 ksi × 0.006894757293 = 0.6894757293 GPa
100 ksi = 0.6894757293 gigapascals.
Conversion table
| KSI (ksi) | Gigapascal (GPa) |
|---|---|
| 1 ksi | 0.0068947573 GPa |
| 10 ksi | 0.0689475729 GPa |
| 50 ksi | 0.3447378647 GPa |
| 100 ksi | 0.6894757293 GPa |
| 500 ksi | 3.447378647 GPa |
| 1,000 ksi | 6.894757293 GPa |
Reverse conversion: Gigapascal to KSI
0.0068947573 GPa × 145.0377377 = 1.000000001 ksi
0.0068947573 gigapascals = 1.000000001 ksi.
ksi = gigapascals × 145.03773773
For a page dedicated to this direction, see Gigapascal to KSI.
Understanding the KSI (ksi)
Kips per square inch.
Understanding the Gigapascal (GPa)
Gigapascal is 1000000000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many gigapascals are in 1 ksi?
1 ksi equals 0.0068947573 gigapascals, using the exact defined conversion factor rather than an estimate.
How do I convert ksi to gigapascal?
Multiply the ksi value by 0.006894757293. The converter above does this instantly to whatever precision you set.
How do I convert gigapascal back to ksi?
Use the reverse factor: 1 gigapascal equals 145.0377377 ksi. You can also use the swap control in the converter above to flip the direction instantly.
What is a ksi?
KSI (ksi) is a unit of engineering.
What is a gigapascal?
Gigapascal (GPa) is a unit of engineering.
Is the ksi to gigapascal conversion exact?
Yes. Both ksi and gigapascal are defined by fixed standards rather than physical artifacts, so the factor of 0.006894757293 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.