Last updated: December 22, 2025

KSI to PSI Conversion

Created by

Sarah K.

Reviewed by

CalcuTotal Team

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Convert pressure between ksi and psi (1 ksi = 1000 psi) with optional kPa reference values.

KSI to PSI Conversion formula

psi=ksi×1000\text{psi} = \text{ksi} \times 1000

KSI is simply 'kilo-psi', so the conversion is a factor of 1000. This tool also shows kPa values for quick SI reference.

This one is straightforward because ksi literally means kilo-psi:

1 ksi=1000 psi1\,ksi = 1000\,psi

Quick formulas

psi=ksi×1000psi = ksi \times 1000

ksi=psi÷1000ksi = psi \div 1000

Worked examples

  1. 2.5 ksi → psi
    2.5×1000=2500 psi2.5\times 1000 = 2500\,psi.

  2. 500 psi → ksi
    500/1000=0.5 ksi500/1000 = 0.5\,ksi.

References and further reading

FAQs