Convert Torrs to Pounds per square inch

To convert torr to psi (pounds per square inch), use a fixed pressure ratio.

• Conversion factor: 1 torr = 0.0193368 psi (approx.)
• Formula: psi = torr × 0.0193368

Steps

1. Take your value in torr.
2. Multiply by 0.0193368.
3. Round your result to the precision you need.

Quick example

• 250 torr × 0.0193368 = 4.8342 psi

For reverse checks, 1 psi ≈ 51.7149 torr. Small differences can happen from rounding.

What is the conversion from torr to pounds per square inch (psi)?

To convert torr to psi, use this factor:

• 1 torr = 0.0193368 psi
• 1 psi = 51.7149 torr

These values come from standard pressure definitions.

What is 760 torr in psi?

760 torr = 14.6959 psi (about 14.7 psi).

760 torr equals 1 atmosphere, which is close to average sea-level air pressure.

How do you convert torr to psi?

Multiply the pressure in torr by 0.0193368.

Formula:
psi = torr × 0.0193368

Example:
500 torr × 0.0193368 = 9.6684 psi

How do you convert psi to torr?

Multiply the pressure in psi by 51.7149.

Formula:
torr = psi × 51.7149

Example:
10 psi × 51.7149 = 517.149 torr

Is torr the same as mmHg?

They are very close, but not exactly the same by strict definition.

• 1 torr = 1/760 of an atmosphere
• 1 mmHg is based on a mercury column at set conditions

In most lab and HVAC work, people treat torr and mmHg as equal.

What is a torr?

A torr is a unit of pressure. It is defined as 1/760 of standard atmospheric pressure. Torr is common in vacuum work, lab setups, and pressure gauges.

What is psi?

Pounds per square inch (psi) measures pressure as force over area. It means how many pounds of force press on one square inch. Psi is common in tires, air tools, compressors, and many U.S. pressure systems.

Why do people convert torr to psi?

Torr shows up often in vacuum and lab gear. Psi is common on many U.S. gauges and specs. Converting helps you match readings, compare ratings, and set the right target pressure.

Are torr and psi absolute or gauge pressure?

The unit alone doesn’t tell you. You need the label:

• psia and torr (absolute) are absolute pressure
• psig is gauge pressure (relative to local air pressure)

Don’t mix psig with absolute units unless you adjust for atmospheric pressure.

What is 1 torr in psi?

1 torr = 0.0193368 psi.

This is useful for quick estimates. For rough math, many people use 0.0193 psi per torr.

What is 1 psi in torr?

1 psi = 51.7149 torr.

This helps when you need to convert common psi values into vacuum ranges.

How accurate is the torr to psi conversion?

The conversion factor is fixed, so the math is exact. Any rounding comes from how many decimals you keep. For most uses, 4 to 6 decimal places is enough.

What are common torr to psi conversions?

Here are a few quick values:

• 100 torr = 1.93368 psi
• 200 torr = 3.86736 psi
• 300 torr = 5.80104 psi
• 500 torr = 9.6684 psi
• 760 torr = 14.6959 psi