Torr to Atm Converter

Free Torr to Atm Converter - convert between Torr (mmHg) and standard atmospheres for vacuum and gas-pressure work.

801.1K uses Updated · 2026-05-12 Runs locally · zero upload
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How to Use Torr to Atm Converter

The Torr to Atm Converter maps pressure values between Torr (mmHg) and standard atmospheres.

  1. Pick the direction - Torr → atm or atm → Torr.
  2. Enter the value - Decimals supported.
  3. Read the result - Formula displayed below the result.

Formula & Theory - Torr to Atm Converter

atm  = Torr ÷ 760
Torr = atm  × 760
ReferenceValue
1 atm760 Torr
1 Torr1/760 atm ≈ 0.001316 atm
1 Torr133.322 Pa

Use Cases for Torr to Atm Converter

  • Vacuum technology - Move between Torr (gauges) and atm (specs).
  • Chemistry - Gas-law problem conversions.
  • Medicine - Blood pressure context (mmHg ≈ Torr).
  • Atmospheric science - Pressure analysis at altitude.

Frequently asked questions about Torr to Atm Converter

How many Torr in 1 atm?

1 atm = 760 Torr (by definition). 1 Torr ≈ 133.322 Pa.

Is Torr the same as mmHg?

They are numerically nearly identical (1 Torr = 101325/760 Pa, 1 mmHg = 133.322387 Pa) — most labs treat them as equal.

Where are these units used?

Vacuum systems, gas chromatography, mass spectrometry, blood pressure (mmHg) and atmospheric physics.

Is my data stored?

No. All calculations happen in your browser; nothing is sent to a server.