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kPa to mmHg Conversion

Convert kPa to mmHg (and back) for barometric readings, medical references, and vacuum work.

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

Quick Summary

Use this when you need:
  • Convert weather pressure values between kPa and mmHg
  • Translate vacuum gauges labeled in torr into kPa
  • Compare reference pressures that mix atm and mmHg
You’ll get:Pressure

Calculator Tool

How this is calculated

Formula:

mmHg = kPa × 7.50062

In plain language:

Values are normalized to Pascals and then converted to mmHg (and torr) using the standard mmHg factor.

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

Pressure used in the calculation.

When to use this calculator

  • Convert weather pressure values between kPa and mmHg
  • Translate vacuum gauges labeled in torr into kPa
  • Compare reference pressures that mix atm and mmHg
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