Direct conversion
Convert inch of mercury [inHg] to kilopascal [kPa] instantly with formula, examples, chart, and FAQs.
Quick answer
Use the calculator below for any custom value, then check the formula, examples, chart, and reverse conversion links.
1 inch of mercury [inHg] = 3.386388 kilopascal [kPa]
1 inch of mercury [inHg] = 3.386388 kilopascal [kPa]
Example: 1 inch of mercury [inHg] equals 3.386388 kilopascal [kPa].
Pressure conversions use pascal as the reference unit and include common engineering, weather, tire, and laboratory pressure units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The inch of mercury (inHg) is a pressure unit used to express measurements in this converter.
HistoryThis unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current useUse inch of mercury when comparing pressure values, checking specifications, converting between systems, or preparing quick estimates.
The kilopascal is a metric pressure unit equal to 1000 pascals.
HistoryThe pascal is the SI derived pressure unit, and kilopascals are convenient for everyday pressure values.
Current useKilopascals are used for tire pressure, weather, engineering specifications, medical equipment, and HVAC documentation.
| inch of mercury [inHg] | kilopascal [kPa] |
|---|---|
| 1 | 3.386388 |
| 2 | 6.772776 |
| 5 | 16.931941 |
| 10 | 33.863882 |
| 20 | 67.727763 |
| 25 | 84.659704 |
| 50 | 169.319408 |
| 100 | 338.638816 |
| 1000 | 3386.388158 |
Use this formula: 1 inch of mercury [inHg] = 3.386388 kilopascal [kPa] Enter your value in the calculator and the result updates instantly.
1 inch of mercury [inHg] equals 3.386388 kilopascal [kPa].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.