Vacuum
mPatonTorr
Convert millipascals (vacuum) (mPa) to nanotorr (vacuum) (nTorr).
Factor1 mPa = 7500.617 nTorr
Converter
mPa
Accepts numbers or expressions, e.g. 150 + 14.7
Result
nTorr
Rendered to 6 significant figures.
Formula
Formula
nTorr = mPa × 7500.617
Multiply any value in millipascals (vacuum) by 7500.617 to obtain the value in nanotorr (vacuum).
Worked example
Convert 1 mPa to nTorr.
- 01Start with 1 mPa.
- 02Multiply by the conversion factor: 1 × 7500.617 = 7500.62 nTorr.
Result1 mPa = 7500.62 nTorr
Conversion table
| mPa | nTorr |
|---|---|
| 1 | 7500.6 |
| 2 | 15001 |
| 5 | 37503 |
| 10 | 75006 |
| 20 | 1.5001e+5 |
| 50 | 3.7503e+5 |
| 100 | 7.5006e+5 |
| 200 | 1.5001e+6 |
| 500 | 3.7503e+6 |
| 1000 | 7.5006e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from mPa to nTorr?
1 mPa equals 7500.617 nTorr. To convert, multiply the value in millipascals (vacuum) by 7500.617.
How do I convert 1 mPa to nTorr?
1 mPa = 7500.62 nTorr. For any value, multiply by 7500.617.
How do I convert nTorr back to mPa?
Divide by the same factor — or equivalently, multiply by 0.0001333224. So 1 nTorr = 0.000133322 mPa.
When would I need to convert millipascal (vacuum) to nanotorr (vacuum)?
Vacuum-pressure conversions between mPa and nTorr are common in vacuum-chamber instrumentation, pump-down endpoint specification, semiconductor and deposition process work, freeze-drying, electron-microscopy column pressure, vacuum metallurgy and HVAC / refrigeration service. Torr, mmHg and inHg dominate manometric vacuum gauges; mbar is standard on European instruments; micron Hg and mTorr cover high-vacuum work; Pa and kPa are the SI references. This category is vacuum / instrumentation intent — dimensionally the same as pressure, but kept separate so process-pressure searches and vacuum searches stay on the right page.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).