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Pressure
InHg to Kilopascals
Convert inHg (inHg) to kilopascals (kPa). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 inHg = 3.3864 kPa
InHg to Kilopascals Conversion Table
Common values, ready to copy:
| inHg | kilopascals |
|---|---|
| 1 inHg | 3.3864 kPa |
| 2 inHg | 6.7728 kPa |
| 5 inHg | 16.932 kPa |
| 10 inHg | 33.8639 kPa |
| 25 inHg | 84.6598 kPa |
| 50 inHg | 169.32 kPa |
| 100 inHg | 338.64 kPa |
| 1,000 inHg | 3386.39 kPa |
Formula
kilopascals = inHg × 3.38639
Pressure is force per area. 1 atm = 101.325 kPa = 14.696 psi = 760 mmHg. Bar is a metric working unit close to atmospheric pressure (1 bar = 100 kPa).
About InHg and Kilopascals
InHg (inHg): Inches of mercury, the imperial equivalent of mmHg; 1 inHg = 25.4 mmHg by definition. Common uses: US weather reports (atmospheric pressure in inches of mercury, standard sea-level pressure ≈ 29.92 inHg), US aviation altimeter settings, and some US vacuum-system contexts.
Kilopascals (kPa): A thousand pascals; the practical SI pressure unit for atmospheric and engineering work. Common uses: Weather reports (atmospheric pressure in kPa, where standard sea-level pressure is about 101 kPa), tire pressure in many countries, and structural engineering.
How the conversion works
Pressure is force per area. 1 atm = 101.325 kPa = 14.696 psi = 760 mmHg. Bar is a metric working unit close to atmospheric pressure (1 bar = 100 kPa).
The exact relationship is kilopascals = inHg × 3.38639, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between inHg and kilopascals comes up wherever pressure measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.