How To Convert Pascal to Torr
Formula for 1 Pascal: 1 Pa = 0.0075006168 torr
Example: Convert 250 Pa to torr.
250 Pa × 0.0075006168270417 = 1.8751542068 torr
To do it by hand, you only need one number. Multiply Pascals by 0.0075006168270417 to get torr.
If you prefer dividing, divide Pascals by 133.32236842105263 to get torr.
Use more decimal places when you need more accuracy, like in lab work.
Quick Answer
1 Pascal = 0.0075006168 Torr
- 10 Pa = 0.0750061683 torr
- 100 Pa = 0.7500616827 torr
- 2,000 Pa = 15.0012336541 torr
Conversion Formula
Recommended standard value: torr = pascal / 133.32236842105263 torr = pascal * 0.0075006168270417
This means torr is a smaller unit than Pascal. So when you convert Pa to torr, the number usually becomes smaller.
Dividing by 133.32236842105263 works because 1 torr equals exactly 133.32236842105263 Pa. Multiplying by 0.0075006168270417 is the same thing, just written as a decimal.
- Write your pressure value in Pa.
- Multiply it by 0.0075006168270417.
- Round to the number of decimals you need.
Pascal
A pascal is an SI unit of pressure equal to 1 newton of force per square metre, 1 N/m². Symbol, Pa.
It is named after Blaise Pascal, a French scientist who studied fluids and pressure. The pascal became the standard SI pressure unit to keep science and engineering consistent worldwide.
- Weather and atmospheric pressure reports (often shown as hPa or kPa)
- Engineering stress and pressure calculations
- Airflow and ventilation system pressure drops
- Material testing and lab experiments
- Industrial process pressure measurements
Torr
A torr is a unit of pressure defined as 1/760 of a standard atmosphere. Symbol, torr.
It is named after Evangelista Torricelli, who helped early pressure measurement using mercury barometers. Torr is still widely used for vacuum and lab pressure readings.
- Vacuum chambers and vacuum pumps
- Physics and chemistry lab instruments
- Thin film coating systems
- Plasma and semiconductor processing
- Some medical and scientific pressure reporting
Is this Conversion of Pascal To Torr Accurate?
Yes. This converter uses the exact, definition based relationship between these units, where 1 torr is defined as 1/760 of a standard atmosphere, and 1 standard atmosphere is defined as exactly 101,325 Pa. That makes 1 torr exactly 133.32236842105263 Pa, and the reverse factor is 0.0075006168270417 torr per Pa.
This is the same standard used in textbooks, lab references, and engineering practice, so the results are reliable for study, research, and everyday calculations. For more details on how we choose and verify constants, see our accuracy standards.
Real Life Examples
Here are practical conversions you might actually see in school, labs, weather, and engineering.
- Sea level air pressure: 101,325 Pa = 760.0000000000 torr. This is the standard reference for “1 atmosphere.”
- Rough vacuum in a small chamber: 200 Pa = 1.5001233654 torr. This is the kind of pressure you might reach with a basic pump.
- Vacuum packaging machine level: 5,000 Pa = 37.5030841352 torr. Useful for comparing different machines.
- Cleanroom or lab room pressure difference: 15 Pa = 0.1125092524 torr. Small Pa values often describe pressure differences across doors and filters.
- Leak test target in a system: 75 Pa = 0.5625462620 torr. Engineers may set test thresholds in Pa, while vacuum gauges read torr.
- Respirator or filter pressure drop check: 250 Pa = 1.8751542068 torr. This shows how much resistance the filter adds.
- Weather at high altitude: 70,000 Pa = 525.0431778929 torr. Pressure drops as you go higher above sea level.
- Pressure in a sealed container: 120,000 Pa = 900.0740192450 torr. Helpful when comparing readings from sensors that use different units.
Quick Tips
- Fast estimate: Pa to torr is roughly Pa × 0.0075.
- More accurate: use Pa × 0.0075006168270417.
- If you have torr and want Pa, remember 1 torr is about 133.3 Pa.
- For quick checks, 100 Pa is about 0.75 torr.
- In vacuum work, small Pa values often turn into small decimals in torr, so keep enough decimal places.
- Round at the end, not in the middle, to avoid extra error.