Pressure Converter
Convert between pressure units
13.248282
inH₂O
rate：1 hPa = 0.40146308 inH₂O
Results in all units
33 hPa| Unit | Symbol | Value |
|---|---|---|
| Metric | ||
| Pascals | Pa | 3,300 |
| Kilopascals | kPa | 3.3 |
| Megapascals | MPa | 0.0033 |
| Hectopascals | hPa | 33 |
| Bars | bar | 0.033 |
| Millibars | mbar | 33 |
| Kilogram force/cm² | kgf/cm² | 0.033651 |
| Dynes/cm² | dyn/cm² | 33,000 |
| Meteorological / Liquid column | ||
| Atmospheres | atm | 0.032568 |
| Millimeters of mercury | mmHg | 24.752036 |
| Inches of mercury | inHg | 0.974489 |
| Millimeters of water | mmH₂O | 336.50635 |
| Inches of water | inH₂O | 13.248282 |
| Imperial / US | ||
| Pounds force/in² | psi | 0.478625 |
| Kilopounds force/in² | ksi | 0.000479 |
| Pounds force/ft² | psf | 68.921933 |
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Common Scenarios
Pressure conversion is an important reference in mechanical engineering, meteorology, and medicine. When inflating car tires, gauges often show psi or bar; in repair shops, mechanics might use kg/cm² or kPa. Weather forecasts use hectopascals (hPa).
History & Background
In the 17th century, Torricelli conducted his famous mercury column experiment and invented the barometer. In the 19th century, the Industrial Revolution and steam engines created a need to measure steam pressure, leading to the "standard atmosphere (atm)."
Conversion Details
Pressure conversion is based on the pascal (Pa).
Common conversions: 1 atm = 101.325 kPa = 760 mmHg, 1 bar = 100 kPa ≈ 14.504 psi.