Convert Megapascals to ksi (MPa to ksi)
1 megapascal (MPa) = 0.1450377377 ksi. 1 ksi = 6.894757293 MPa. Example: 355 MPa = 355 × 0.1450377377 = 51.48839689 ksi.
Also searched as megapascals to ksi, megapascals in ksi, megapascals into ksi, MPa to ksi, MPa in ksi, MPa into ksi, megapascal to ksi, MPa to ksi converter and how many ksi in a megapascal.
1 MPa = 0.1450377377 ksi
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk megapascal to ksi converter to paste a column from Excel.
How to Convert Megapascal to ksi
- 1 MPa = 0.1450377377 ksi
- 1 ksi = 6.894757293 MPa
- Example: convert 355 MPa to ksi: 355 MPa = 355 × 0.1450377377 ksi = 51.48839689 ksi
Formula
ksi = MPa × 0.1450377377302
or ksi = MPa ÷ 6.894757293168
Derivation from SI units:
- 1 MPa = 10⁶ Pa = 1 N/mm²
- 1 ksi = 1000 psi = 1 kip/in² = 6.894757293168 MPa
- 1 MPa = 1000000 Pa ÷ 6894757.293168 Pa per ksi = 0.1450377377302 ksi
Both units are defined exactly, so the factor is exact. Megapascal definition: megapascal; ksi definition: ksi.
Worked examples
- S355 steel with a yield strength of 355 MPa has 51.48839689 ksi.
355 MPa × 0.1450377377 = 51.48839689 ksi - S235 steel at 235 MPa yields at 34.08386837 ksi.
235 MPa × 0.1450377377 = 34.08386837 ksi
Megapascal to ksi conversion table
| Megapascals (MPa) | ksi |
|---|---|
| 0.01 MPa | 0.001450377377 ksi |
| 0.05 MPa | 0.007251886887 ksi |
| 0.1 MPa | 0.01450377377 ksi |
| 0.2 MPa | 0.02900754755 ksi |
| 0.5 MPa | 0.07251886887 ksi |
| 0.7 MPa | 0.1015264164 ksi |
| 1 MPa | 0.1450377377 ksi |
| 1.5 MPa | 0.2175566066 ksi |
| 2 MPa | 0.2900754755 ksi |
| 2.5 MPa | 0.3625943443 ksi |
| 5 MPa | 0.7251886887 ksi |
| 7 MPa | 1.015264164 ksi |
| 10 MPa | 1.450377377 ksi |
| 15 MPa | 2.175566066 ksi |
| 20 MPa | 2.900754755 ksi |
| 25 MPa | 3.625943443 ksi |
| 30 MPa | 4.351132132 ksi |
| 40 MPa | 5.801509509 ksi |
| 50 MPa | 7.251886887 ksi |
| 70 MPa | 10.15264164 ksi |
| 100 MPa | 14.50377377 ksi |
| 200 MPa | 29.00754755 ksi |
| 250 MPa | 36.25943443 ksi |
| 355 MPa | 51.48839689 ksi |
| 500 MPa | 72.51886887 ksi |
Where it's used
Material strengths in MPa from EN and ISO standards are converted to ksi for US design, ASME code checks and supplier comparisons. Divide by about 6.895.
Megapascal to other pressure units
| Conversion | 1 MPa equals |
|---|---|
| megapascal to ksi | 0.1450377377 ksi |
| megapascal to pascal | 1000000 Pa |
| megapascal to kilopascal | 1000 kPa |
| megapascal to kilogram-force per square centimetre | 10.19716213 kgf/cm² |
| megapascal to psi | 145.0377377 psi |
| megapascal to bar | 10 bar |
| megapascal to millimeter of mercury | 7500.615758 mmHg |
| megapascal to inch of water | 4014.63076 inH₂O |
Show 12 more units
| megapascal to atmosphere | 9.869232667 atm |
|---|---|
| megapascal to gigapascal | 0.001 GPa |
| megapascal to newton per square millimetre | 1 N/mm² |
| megapascal to kilogram-force per square millimetre | 0.1019716213 kgf/mm² |
| megapascal to millibar | 10000 mbar |
| megapascal to torr | 7500.616827 Torr |
| megapascal to millimeter of water | 101971.6213 mmH₂O |
| megapascal to centimeter of water | 10197.16213 cmH₂O |
| megapascal to inch of mercury | 295.299833 inHg |
| megapascal to decibar | 100 dbar |
| megapascal to inch of water (60 °F) | 4018.64652 inH₂O (60 °F) |
| megapascal to barye | 10000000 Ba |
Frequently asked questions
What is 355 MPa in ksi?
355 MPa = 51.48839689 ksi.
How many ksi are in 1 megapascal?
1 MPa = 0.1450377377 ksi.
How do I convert megapascals to ksi?
Multiply the value in MPa by 0.1450377377, or divide it by 6.894757293. For example, 355 MPa × 0.1450377377 = 51.48839689 ksi.
Is the MPa to ksi conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7, SI prefixes.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "kip per square inch (ksi)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Megapascals to ksi (MPa to ksi). Retrieved October 25, 2026, from https://scientificconverters.com/pressure/megapascal-to-ksi/
IEEE
Scientific Converters, "Convert Megapascals to ksi (MPa to ksi)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/megapascal-to-ksi/