Kips per square inch.
KSI to Megapascals Converter — ksi to MPa
Convert KSI (ksi) to Megapascal (MPa) using the exact conversion factor (1 ksi = 6.894757293 megapascal). See the formula, worked examples, and conversion table.
KSI to Megapascals 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.
Megapascal is 1000000 pascal units.
Result = input x 6.89475729e+6 / 1e+6.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting KSI to Megapascals
KSI and Megapascal 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 megapascal is 1000000 pascal units.
Formula
megapascals = ksi × 6.89475729317
This factor comes from each unit's defined relationship to the category's base unit: 1 ksi equals 6894757.29317 base units, and 1 megapascal equals 1000000 base units, so dividing one by the other gives the direct ksi-to-megapascal factor of 6.89475729317.
Simple example
1 ksi × 6.894757293 = 6.894757293 MPa
1 ksi = 6.894757293 megapascals.
Real-world example
100 ksi × 6.894757293 = 689.4757293 MPa
100 ksi = 689.4757293 megapascals.
Conversion table
| KSI (ksi) | Megapascal (MPa) |
|---|---|
| 1 ksi | 6.894757293 MPa |
| 10 ksi | 68.94757293 MPa |
| 50 ksi | 344.7378647 MPa |
| 100 ksi | 689.4757293 MPa |
| 500 ksi | 3,447.378647 MPa |
| 1,000 ksi | 6,894.757293 MPa |
Reverse conversion: Megapascal to KSI
6.894757293 MPa × 0.1450377377 = 1 ksi
6.894757293 megapascals = 1 ksi.
ksi = megapascals × 0.14503773773
For a page dedicated to this direction, see Megapascal to KSI.
Understanding the KSI (ksi)
Kips per square inch.
Understanding the Megapascal (MPa)
Megapascal is 1000000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megapascals are in 1 ksi?
1 ksi equals 6.894757293 megapascals, using the exact defined conversion factor rather than an estimate.
How do I convert ksi to megapascal?
Multiply the ksi value by 6.894757293. The converter above does this instantly to whatever precision you set.
How do I convert megapascal back to ksi?
Use the reverse factor: 1 megapascal equals 0.1450377377 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 megapascal?
Megapascal (MPa) is a unit of engineering.
Is the ksi to megapascal conversion exact?
Yes. Both ksi and megapascal are defined by fixed standards rather than physical artifacts, so the factor of 6.894757293 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.