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KSI to PSI Conversion

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

Formula shown0 inputs definedUpdated Dec 2025By CalcuTotal TeamFree, no sign-up

Quick Summary

Use this when you need:
  • Convert engineering stress values between ksi and psi
  • Translate pressure limits on component labels
  • Quickly sanity-check kPa equivalents when needed
You’ll get:Pressure / Stress

Calculator Tool

How this is calculated

Formula:

psi = ksi × 1000

In plain language:

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

The formula is always visible so you can verify the math and explain your numbers to anyone who asks.

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What these terms mean

Pressure / Stress

Pressure / Stress used in the calculation.

When to use this calculator

  • Convert engineering stress values between ksi and psi
  • Translate pressure limits on component labels
  • Quickly sanity-check kPa equivalents when needed
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