Mmhg to Psi Converter
Convert millimetre of mercury to pound per square inch instantly. Type a value below — the result updates as you type.
When you need to convert millimetre of mercury to pound per square inch
Pressure conversions are used for tyre inflation, weather readings, scuba and industrial gauges, and HVAC work, where gauges and manuals may be calibrated in different units.
Typical values: 0.5 mmHg is about 0.0097 psi, and 100 mmHg works out to roughly 1.9337 psi. Because the ratio is fixed at 0.0193, you can scale any amount linearly — doubling the mmHg doubles the psi.
A single tyre or gauge spec is often printed in two or three pressure units side by side for international use.
How to convert millimetre of mercury to pound per square inch
One millimetre of mercury equals 0.0193 psi. To convert, multiply the number of mmHg by 0.0193:
psi = mmHg × 0.0193
For example, 10 mmHg × 0.0193 = 0.1934 psi.
Mmhg to psi conversion table
| Pressure (mmHg) | Psi (psi) |
|---|---|
| 1 mmHg | 0.0193 psi |
| 2 mmHg | 0.0387 psi |
| 3 mmHg | 0.058 psi |
| 5 mmHg | 0.0967 psi |
| 10 mmHg | 0.1934 psi |
| 20 mmHg | 0.3867 psi |
| 50 mmHg | 0.9668 psi |
| 100 mmHg | 1.9337 psi |
FAQ
How many psi are in a millimetre of mercury?
One millimetre of mercury = 0.0193 psi.
How do I convert psi back to mmHg?
Divide by 0.0193, or use the psi to mmHg converter.