Convert Torr to Millipascals
Convert Torr (Torr) to Millipascals (mPa) instantly and accurately.
Conversion Formula
mPa = Torr × 133322.3684
About Torr
The torr is defined as exactly 1/760 of a standard atmosphere ≈ 133.322 Pa - effectively replacing mmHg with an exact definition. Named after Evangelista Torricelli (1608-1647), inventor of the barometer. Vacuum science universally uses torr: rough vacuum 760-1 torr; medium vacuum 1-10⁻³ torr; high vacuum 10⁻³-10⁻⁷ torr; ultra-high vacuum below 10⁻⁹ torr. UHV systems for surface science, particle accelerator beam tubes, and space simulation chambers reach 10⁻¹¹-10⁻¹² torr. 1 torr = 133.322 Pa.
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.
Quick Reference Table
| Torr (Torr) | Millipascals (mPa) |
|---|---|
| 1 Torr | 133322 mPa |
| 2 Torr | 266645 mPa |
| 5 Torr | 666612 mPa |
| 10 Torr | 1333220 mPa |
| 25 Torr | 3333060 mPa |
| 50 Torr | 6666120 mPa |
| 100 Torr | 13332200 mPa |