🔩 Pressure
atmospheres to mmHg Converter
Convert atmospheres to mmHg instantly with a reference table.
Quick answer: To convert atmospheres to mmHg, multiply by 760. For example, 1 atmospheres = 760 mmHg. Use the calculator below for any value.
atmospheres to mmHg
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Common conversions
| atmospheres | mmHg |
|---|
Formula:
How to convert atmospheres to mmHg
1
Enter your value
Type the number of atmospheres you want to convert into the left box. The result in mmhg appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — mmHg to atmospheres. Your current value carries across so you don't have to re-enter anything.
3
About atmospheres and mmHg
atmospheres and mmHg are common pressure measurements.
💡 Did you know?
1 atm = 760 mmHg exactly. Mercury barometers support a column of 760 mm at standard atmospheric pressure. Blood pressure is measured in mmHg historically because early sphygmomanometers used mercury columns. The WHO has moved toward kPa but mmHg remains standard in clinical practice.
📊 Common conversions at a glance
| atmospheres | mmHg |
|---|---|
| 0.001 | 0.76 |
| 0.01 | 7.6 |
| 0.1 | 76 |
| 0.5 | 380 |
| 1 | 760 |
| 1.5 | 1140 |
Reviewed for 2026. atmospheres ↔ mmHg conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.