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mmHg to kPa

Convert mmHg to kPa quickly with this free online calculator. The page explains the conversion rule, gives practical examples and provides a quick reference table.

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CONVERTED RESULT—
Decimal places
CONVERSION RULE

1 mmHg equals approximately 0.133322 kPa.

How to use the mmHg to kPa

  1. Enter the number you want to convert.
  2. Confirm the source unit shown beside the input.
  3. Choose decimal precision if you need more or less detail.
  4. Read the converted result.
  5. Copy the result when you need to use it elsewhere.

How the conversion works

1 mmHg equals approximately 0.133322 kPa.

For a simple fixed-factor conversion, the calculator multiplies the entered value by the stated factor. Temperature scales and certain specialized tools use their specific mathematical relationship instead.

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Common mmHg to kPa conversions

mmHgkPa
1 mmHg0.133322 kPa
2 mmHg0.266645 kPa
5 mmHg0.666612 kPa
10 mmHg1.333224 kPa
20 mmHg2.666447 kPa
50 mmHg6.666118 kPa

Example

For example, entering 1 mmHg gives approximately 0.133322 kPa using the rule above. Change the input to test your own value.

Frequently asked questions

The mmHg to kPa converts a value from mmHg to kPa using the conversion relationship described on this page.
Enter your value, review the source and destination units, choose the decimal precision and read or copy the result.
1 mmHg equals approximately 0.133322 kPa.
Use enough precision for your purpose. Everyday estimates usually need fewer decimal places; technical work may require more.
It can be a useful reference calculation, but safety-critical, regulated, contractual or specialized work should be verified against the applicable authoritative standard.

Accuracy note: This calculator is a practical reference. For regulated, safety-critical or specialized work, verify the result against the applicable standard.

Page reviewed: August 24, 2026.