Convert Millipascals to Inches of Mercury
Convert Millipascals (mPa) to Inches of Mercury (inHg) instantly and accurately.
Conversion Formula
inHg = mPa × 2.952998330e-7
About Millipascals
A millipascal (mPa) is 10⁻³ Pa. It appears primarily in rheology as the millipascal-second (mPa·s = centipoise) for dynamic viscosity: water at 20°C is 1.002 mPa·s; olive oil ~80 mPa·s; honey 2,000-10,000 mPa·s. Food technology, polymer processing, pharmaceutical formulation, and inkjet printing all specify flow behaviour in mPa·s. Partial pressures of trace atmospheric gases and ultra-high-vacuum leak rates measured by residual gas analysers are also expressed in millipascals. 1 mPa = 10⁻³ Pa.
About Inches of Mercury
One inch of mercury (inHg) ≈ 3,386 Pa - the primary barometric pressure unit in US aviation and meteorology. ASOS weather stations, METARs, and altimeter settings in the US report in inHg. Standard sea-level pressure is 29.92 inHg. Altimeters are set to local QNH in inHg to maintain altitude reference. US barometers for home weather stations display inHg. Typical pressure range: 28.5-31.0 inHg in continental weather systems. Record low: ~25.70 inHg (Typhoon Tip, 1979). 1 inHg = 3,386.39 Pa.
Quick Reference Table
| Millipascals (mPa) | Inches of Mercury (inHg) |
|---|---|
| 1 mPa | 2.953 × 10-7 inHg |
| 2 mPa | 5.906 × 10-7 inHg |
| 5 mPa | 1.476 × 10-6 inHg |
| 10 mPa | 2.953 × 10-6 inHg |
| 25 mPa | 7.382 × 10-6 inHg |
| 50 mPa | 1.476 × 10-5 inHg |
| 100 mPa | 2.953 × 10-5 inHg |