Convert Nanopascals to Torr
Convert Nanopascals (nPa) to Torr (Torr) instantly and accurately.
Conversion Formula
Torr = nPa × 7.500616827e-12
About Nanopascals
A nanopascal (nPa) is 10⁻⁹ Pa - the pressure scale of deep interplanetary space. LIGO and Virgo gravitational wave detectors must isolate mirror displacement signals against noise floors in the nanopascal regime. Low Earth orbit residual atmosphere is ~100 µPa; deep interplanetary space is ~1-10 nPa depending on solar wind activity. Thermospheric gas layers above 200 km altitude fall into the nPa-µPa range. Casimir force calculations and quantum vacuum fluctuation modelling also operate at nanopascal scales. 1 nPa = 10⁻⁹ Pa.
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.
Quick Reference Table
| Nanopascals (nPa) | Torr (Torr) |
|---|---|
| 1 nPa | 7.501 × 10-12 Torr |
| 2 nPa | 1.5 × 10-11 Torr |
| 5 nPa | 3.75 × 10-11 Torr |
| 10 nPa | 7.501 × 10-11 Torr |
| 25 nPa | 1.875 × 10-10 Torr |
| 50 nPa | 3.75 × 10-10 Torr |
| 100 nPa | 7.501 × 10-10 Torr |