Inches of mercury.
inHgs to Kilopascals Converter — inHg to kPa
Convert inHg (inHg) to Kilopascal (kPa) using the exact conversion factor (1 inhg = 3.386389 kilopascal). See the formula, worked examples, and conversion table.
inHgs to Kilopascals converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Kilopascal is 1000 pascal units.
Result = input x 3386.389 / 1000.
Stress Pressure units are compatible.
Reserved above the conversion cards and below the converter.
About Converting inHgs to Kilopascals
inHg and Kilopascal both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Inches of mercury, and kilopascal is 1000 pascal units.
Formula
kilopascals = inhgs × 3.386389
This factor comes from each unit's defined relationship to the category's base unit: 1 inhg equals 3386.389 base units, and 1 kilopascal equals 1000 base units, so dividing one by the other gives the direct inhg-to-kilopascal factor of 3.386389.
Simple example
1 inHg × 3.386389 = 3.386389 kPa
1 inhg = 3.386389 kilopascals.
Real-world example
100 inHg × 3.386389 = 338.6389 kPa
100 inhgs = 338.6389 kilopascals.
Conversion table
| inHg (inHg) | Kilopascal (kPa) |
|---|---|
| 1 inHg | 3.386389 kPa |
| 10 inHg | 33.86389 kPa |
| 50 inHg | 169.31945 kPa |
| 100 inHg | 338.6389 kPa |
| 500 inHg | 1,693.1945 kPa |
| 1,000 inHg | 3,386.389 kPa |
Reverse conversion: Kilopascal to inHg
3.386389 kPa × 0.2952998016 = 1 inHg
3.386389 kilopascals = 1 inhgs.
inhgs = kilopascals × 0.295299801647
For a page dedicated to this direction, see Kilopascal to inHg.
Understanding the inHg (inHg)
Inches of mercury.
Understanding the Kilopascal (kPa)
Kilopascal is 1000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kilopascals are in 1 inhg?
1 inhg equals 3.386389 kilopascals, using the exact defined conversion factor rather than an estimate.
How do I convert inhg to kilopascal?
Multiply the inhg value by 3.386389. The converter above does this instantly to whatever precision you set.
How do I convert kilopascal back to inhg?
Use the reverse factor: 1 kilopascal equals 0.2952998016 inhgs. You can also use the swap control in the converter above to flip the direction instantly.
What is a inhg?
inHg (inHg) is a unit of engineering.
What is a kilopascal?
Kilopascal (kPa) is a unit of engineering.
Is the inhg to kilopascal conversion exact?
Yes. Both inhg and kilopascal are defined by fixed standards rather than physical artifacts, so the factor of 3.386389 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.