Convert psi to Kilograms-force per Square Millimetre
1 psi = 0.0007030695796 kilograms-force per square millimetre (kgf/mm²). 1 kgf/mm² = 1422.334331 psi. Example: 15 psi = 15 × 0.0007030695796 = 0.01054604369 kgf/mm².
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1 psi = 0.0007030695796 kgf/mm²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk psi to kilogram-force per square millimetre converter to paste a column from Excel.
How to Convert psi to Kilogram-force per Square Millimetre
- 1 psi = 0.0007030695796 kgf/mm²
- 1 kgf/mm² = 1422.334331 psi
- Example: convert 15 psi to kgf/mm²: 15 psi = 15 × 0.0007030695796 kgf/mm² = 0.01054604369 kgf/mm²
Formula
kgf/mm² = psi × 0.0007030695796392
or kgf/mm² = psi ÷ 1422.334330712
Derivation from SI units:
- 1 psi = 1 lbf/in² = (0.45359237 kg × 9.80665 m/s²) ÷ (0.0254 m)² = 6894.757293168 Pa
- 1 kgf/mm² = 9.80665 N ÷ 1 mm² = 9.80665 MPa (exact)
- 1 psi = 6894.757293168 Pa ÷ 9806650 Pa per kgf/mm² = 0.0007030695796392 kgf/mm²
Both units are defined exactly, so the factor is exact. psi definition: psi; Kilogram-force per Square Millimetre definition: kilogram-force per square millimetre.
Worked examples
- A reading of 14.7 psi converts to 0.01033512282 kgf/mm².
14.7 psi × 0.0007030695796 = 0.01033512282 kgf/mm² - A value of 60 psi is 0.04218417478 kgf/mm².
60 psi × 0.0007030695796 = 0.04218417478 kgf/mm²
psi to Kilogram-force per Square Millimetre conversion table
| psi | Kilograms-force per Square Millimetre (kgf/mm²) |
|---|---|
| 0.01 psi | 0.000007030695796 kgf/mm² |
| 0.05 psi | 0.00003515347898 kgf/mm² |
| 0.1 psi | 0.00007030695796 kgf/mm² |
| 0.25 psi | 0.0001757673949 kgf/mm² |
| 0.5 psi | 0.0003515347898 kgf/mm² |
| 1 psi | 0.0007030695796 kgf/mm² |
| 2 psi | 0.001406139159 kgf/mm² |
| 5 psi | 0.003515347898 kgf/mm² |
| 10 psi | 0.007030695796 kgf/mm² |
| 14.7 psi | 0.01033512282 kgf/mm² |
| 15 psi | 0.01054604369 kgf/mm² |
| 20 psi | 0.01406139159 kgf/mm² |
| 25 psi | 0.01757673949 kgf/mm² |
| 30 psi | 0.02109208739 kgf/mm² |
| 32 psi | 0.02249822655 kgf/mm² |
| 35 psi | 0.02460743529 kgf/mm² |
| 40 psi | 0.02812278319 kgf/mm² |
| 50 psi | 0.03515347898 kgf/mm² |
| 60 psi | 0.04218417478 kgf/mm² |
| 80 psi | 0.05624556637 kgf/mm² |
| 100 psi | 0.07030695796 kgf/mm² |
| 125 psi | 0.08788369745 kgf/mm² |
| 150 psi | 0.1054604369 kgf/mm² |
| 200 psi | 0.1406139159 kgf/mm² |
| 500 psi | 0.3515347898 kgf/mm² |
| 1000 psi | 0.7030695796 kgf/mm² |
| 3000 psi | 2.109208739 kgf/mm² |
| 5000 psi | 3.515347898 kgf/mm² |
Where it's used
psi are used for tyre pressure in the United States (about 30–35 psi for cars), while kilograms-force per square millimetre appear in tensile strength in older JIS and GB steel standards. Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
psi to other pressure units
| Conversion | 1 psi equals |
|---|---|
| psi to kilogram-force per square millimetre | 0.0007030695796 kgf/mm² |
| psi to pascal | 6894.757293 Pa |
| psi to kilopascal | 6.894757293 kPa |
| psi to ksi | 0.001 ksi |
| psi to kilogram-force per square centimetre | 0.07030695796 kgf/cm² |
| psi to bar | 0.06894757293 bar |
| psi to millimeter of mercury | 51.7149252 mmHg |
| psi to inch of water | 27.67990471 inH₂O |
Show 12 more units
| psi to atmosphere | 0.06804596391 atm |
|---|---|
| psi to megapascal | 0.006894757293 MPa |
| psi to gigapascal | 0.000006894757293 GPa |
| psi to newton per square millimetre | 0.006894757293 N/mm² |
| psi to millibar | 68.94757293 mbar |
| psi to torr | 51.71493257 Torr |
| psi to millimeter of water | 703.0695796 mmH₂O |
| psi to centimeter of water | 70.30695796 cmH₂O |
| psi to inch of mercury | 2.036020677 inHg |
| psi to decibar | 0.6894757293 dbar |
| psi to inch of water (60 °F) | 27.7075924 inH₂O (60 °F) |
| psi to barye | 68947.57293 Ba |
Frequently asked questions
How many kilograms-force per square millimetre are in 1 psi?
1 psi = 0.0007030695796 kgf/mm².
How do I convert psi to kilograms-force per square millimetre?
Multiply the value in psi by 0.0007030695796, or divide it by 1422.334331. For example, 15 psi × 0.0007030695796 = 0.01054604369 kgf/mm².
Is the psi to kgf/mm² 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
- 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, "pound-force per square inch (psi)".
- 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, "kilogram-force per square millimeter".
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 psi to Kilograms-force per Square Millimetre. Retrieved October 25, 2026, from https://scientificconverters.com/pressure/psi-to-kilogram-force-per-square-millimeter/
IEEE
Scientific Converters, "Convert psi to Kilograms-force per Square Millimetre," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/psi-to-kilogram-force-per-square-millimeter/