Inches of mercury.
inHgs to Centipascals Converter — inHg to cPa
Convert inHg (inHg) to Centipascal (cPa) using the exact conversion factor (1 inhg = 338,638.9 centipascal). See the formula, worked examples, and conversion table.
inHgs to Centipascals converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
Centipascal is 0.01 pascal units.
Result = input x 3386.389 / 0.01.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting inHgs to Centipascals
inHg and Centipascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: Inches of mercury, and centipascal is 0.01 pascal units.
Formula
centipascals = inhgs × 338638.9
This factor comes from each unit's defined relationship to the category's base unit: 1 inhg equals 3386.389 base units, and 1 centipascal equals 0.01 base units, so dividing one by the other gives the direct inhg-to-centipascal factor of 338638.9.
Simple example
1 inHg × 338638.9 = 338,638.9 cPa
1 inhg = 338,638.9 centipascals.
Real-world example
35 inHg × 338638.9 = 11,852,361.5 cPa
35 inhgs = 11,852,361.5 centipascals.
Conversion table
| inHg (inHg) | Centipascal (cPa) |
|---|---|
| 1 inHg | 338,638.9 cPa |
| 5 inHg | 1,693,194.5 cPa |
| 10 inHg | 3,386,389 cPa |
| 25 inHg | 8,465,972.5 cPa |
| 50 inHg | 16,931,945 cPa |
| 100 inHg | 33,863,890 cPa |
Reverse conversion: Centipascal to inHg
1 cPa × 0.000002952998016 = 0.000002953 inHg
1 centipascal = 0.000002953 inhgs.
inhgs = centipascals × 0.00000295299801647
For a page dedicated to this direction, see Centipascal to inHg.
Understanding the inHg (inHg)
Inches of mercury.
Understanding the Centipascal (cPa)
Centipascal is 0.01 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many centipascals are in 1 inhg?
1 inhg equals 338,638.9 centipascals, using the exact defined conversion factor rather than an estimate.
How do I convert inhg to centipascal?
Multiply the inhg value by 338638.9. The converter above does this instantly to whatever precision you set.
How do I convert centipascal back to inhg?
Use the reverse factor: 1 centipascal equals 0.000002953 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 pressure.
What is a centipascal?
Centipascal (cPa) is a unit of pressure.
Is the inhg to centipascal conversion exact?
Yes. Both inhg and centipascal are defined by fixed standards rather than physical artifacts, so the factor of 338638.9 used above is exact to as many digits as you choose to display.