How To Convert Torr to Pascal
Formula: Pa = torr × 133.322368
Example: Convert 25 torr to Pa.
25 × 133.322368 = 3333.05920000 Pa
To convert by hand, take the number of torr you have and multiply it by 133.322368.
This works for small vacuum pressures and also for larger pressures.
Write your answer in Pascals (Pa), which is the SI unit used in science and engineering.
Quick Answer
1 torr = 133.32236800 Pa
- 0.5 torr = 66.66118400 Pa
- 10 torr = 1333.22368000 Pa
- 100 torr = 13332.23680000 Pa
Conversion Formula
Pa = torr × 133.322368
This means Pascals are a larger unit than torr. So when you multiply torr by 133.322368, you get the same pressure written in Pascals.
In simple words, you are just changing the unit label while keeping the pressure itself the same.
- Write down your pressure in torr.
- Multiply it by 133.322368.
- The result is your pressure in Pa.
Torr
A torr is a unit of pressure often used in vacuum work. The symbol is torr (also written as Torr).
It is named after Evangelista Torricelli, who helped early scientists understand air pressure. The unit became common in labs because it matches older mercury based pressure measurements.
- Vacuum pump and vacuum chamber gauges
- Chemistry lab vacuum distillation
- Thin film coating and sputtering systems
- Freeze drying (lyophilization) equipment
- Research setups where low pressure is measured often
Pascal
A pascal is the SI unit of pressure. The symbol is Pa.
It is named after Blaise Pascal for his work on fluids and pressure. Pascals are used worldwide because they fit the modern SI measurement system.
- Weather and atmospheric science calculations
- Engineering specs for pressure in pipes and tanks
- Physics problems and school science work
- Pressure sensors and industrial instruments
- Standards and technical documents that require SI units
Is this Conversion of Torr To Pascal Accurate?
Yes. This converter uses the standard definition that links torr to the standard atmosphere, where 1 torr is defined as 1/760 of a standard atmosphere, and a standard atmosphere is defined as 101,325 Pa. Because these are defined reference values used in science and engineering, the conversion factor is stable and trustworthy for study, lab work, and general use.
For more details on how our reference values are chosen and checked, read our standards page here: accuracy standards.
Real Life Examples
Here are practical situations where you may need to change torr to Pa, plus the exact results.
- Vacuum oven setting: A vacuum oven is set to 10 torr for drying, which is 1333.22368000 Pa.
- Freeze dryer target pressure: A freeze dryer reaches 0.1 torr, which equals 13.33223680 Pa.
- Vacuum distillation: A chemistry procedure runs at 50 torr, which is 6666.11840000 Pa.
- Thin film base pressure: A coating system shows 0.001 torr base pressure, which is 0.13332236800 Pa.
- Leak testing: A test specifies a 2 torr pressure difference, which is 266.64473600 Pa.
- Rough vacuum range: A gauge reads 200 torr during pump down, which equals 26664.47360000 Pa.
- Process control spec: A manufacturing step requires 15 torr, which is 1999.83552000 Pa.
Quick Tips
- Use the same factor every time: multiply by 133.322368.
- For 10 torr, multiply 133.322368 by 10, so the result is 1333.22368 Pa.
- For 0.1 torr, divide the 1 torr value by 10, so the result is 13.3322368 Pa.
- For 0.001 torr, divide the 1 torr value by 1000, so the result is 0.133322368 Pa.
- For quick checking, move between related values, like from 20 torr to 200 torr by multiplying your Pa result by 10.
- Always keep your unit label clear, torr for input, Pa for output, to avoid mixing pressure units.