Convert Torrs to Pascals

Torr and pascal (Pa) are both units of pressure. Torr is common in lab and vacuum work, while pascals are the SI unit used in science and engineering.

To convert torrs to pascals, use this conversion factor:

• 1 Torr = 133.322 Pa (about)

Conversion formula (Torr to Pa):

• Pa = Torr × 133.322

Quick examples:

• 5 Torr × 133.322 = 666.61 Pa
• 0.5 Torr × 133.322 = 66.661 Pa

Tip: Keep extra decimal places if you need more accuracy, then round at the end.

How many pascals are in 1 torr?

1 torr equals 133.322368421 pascals (Pa).
For quick work, many people round it to 133.322 Pa.

How do I convert torr to pascals?

Multiply the pressure value in torr by 133.322368421.

Formula:
Pa = torr × 133.322368421

What is the reverse conversion from pascals to torr?

Divide the pressure value in pascals by 133.322368421.

Formula:
torr = Pa ÷ 133.322368421

Is torr the same as mmHg?

They are close but not always the same.

• 1 torr is defined as 1/760 of 1 atmosphere.
• 1 mmHg depends on how it’s defined (it can be tied to mercury density and gravity).

In most lab and HVAC uses, torr and mmHg are treated as equal.

Why does 1 torr equal about 133.322 Pa?

Because 1 atmosphere = 101,325 Pa and 1 torr = 1/760 atm.

So:
1 torr = 101,325 ÷ 760 = 133.322368421 Pa

What are common torr to pascal conversions?

Here are a few quick reference values:

• 0.1 torr = 13.332236842 Pa
• 1 torr = 133.322368421 Pa
• 10 torr = 1,333.22368421 Pa
• 100 torr = 13,332.2368421 Pa
• 760 torr = 101,325 Pa

How many pascals are in 760 torr?

760 torr equals 101,325 Pa.
That’s because 760 torr = 1 atmosphere.

Should I round when converting torr to pascals?

Rounding depends on your use.

• For quick checks, 133.322 Pa per torr is often enough.
• For lab work, calibration, or specs, keep more digits, like 133.322368421.

Match your rounding to the precision of your gauge or data.

What is a pascal (Pa) in simple terms?

A pascal is a unit of pressure in the SI system.
1 Pa equals 1 newton per square meter (N/m²). It’s a small unit, so pressures are often shown as kPa (kilopascals).

What is a torr used for?

Torr is common for vacuum pressure and low-pressure systems, such as:

• vacuum pumps and chambers
• thin-film coating
• mass spectrometers
• lab vacuum lines

It’s easy to read in ranges where pascals can feel large.

Are torr and pascals absolute pressure units?

Yes, both can be used as absolute pressure units, as long as the reference is clear.
In vacuum work, values are often absolute. If a spec uses gauge pressure, it should say gauge or use a reference point.

Does temperature affect torr to pascal conversion?

No. The unit conversion is fixed by definition.
Temperature can change the actual pressure in a system, but it doesn’t change how many pascals are in a torr.