Inches of Mercury to Kilopascals Converter
1 inch of mercury = 3.38638896 kilopascals
1 inch of mercury equals 3.38639 kilopascals
How to convert inches of mercury to kilopascals
Unit conversion preserves the pressure reference. Gauge pressure and absolute pressure are different readings; changing between them also needs the ambient pressure. Mercury and water-column units use the conventions stated in their unit notes.
kPa = inHg × 3.38638896One inch of mercury is 3.38638896 kilopascals, so a single multiplication converts any value.
33.8639 kPa ≈ 10 × 3.38638896Inches of mercury to kilopascals conversion table
Common values in inches of mercury, converted to kilopascals.
| Inches of mercury (inHg) | Kilopascals (kPa) |
|---|---|
| 1 | 3.386389 |
| 2 | 6.7727779 |
| 3 | 10.159167 |
| 4 | 13.545556 |
| 5 | 16.931945 |
| 10 | 33.86389 |
| 20 | 67.727779 |
| 25 | 84.659724 |
| 50 | 169.31945 |
| 100 | 338.6389 |
| 250 | 846.59724 |
| 500 | 1,693.1945 |
| 1,000 | 3,386.389 |
About these units
inch of mercuryinHg
Exactly 25.4 mmHg. The US aviation and weather-report pressure unit.
kilopascalkPa
One thousand pascals. The metric standard for tyre pressure.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.