mmHg to Pascals Converter
mmHg → Pa · 🔬 Pressure
1 mmHg = 133.322 Pascals
How to convert mmHg to Pascals
To convert mmHg to Pascals, multiply the value in mmHg by 133.322. For example, 5 mmHg = 666.61 Pa.
If you need to convert from mmHg to Pascals, the key figure to remember is that one mmHg equals 133.322 Pascals. This page gives you a live calculator, a full reference table, and the underlying formula so you can convert mmHg to Pa with complete confidence.
Pressure conversions are used in weather forecasting, engineering, diving, automotive maintenance, and industrial processes. Different fields favor different units, making conversion a regular necessity.
Understanding mmHg and Pascals
The pascal is the SI unit, but it's small, so kilopascals and bars are more practical for everyday use. PSI (pounds per square inch) dominates in US engineering and tire pressures, while atmospheres provide an intuitive reference point — 1 atm is roughly the air pressure at sea level. Weather reports use hectopascals or millibars, which are numerically identical.
How accurate is this conversion?
Pressure conversions are based on fixed physical definitions. One standard atmosphere equals exactly 101,325 pascals, and 1 bar equals exactly 100,000 pascals, so all conversions here are precise.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common mmHg to Pascals values
The most frequently searched conversions are 1 mmHg = 133.322 Pascals, 5 mmHg = 666.61 Pascals, 10 mmHg = 1,333.22 Pascals, and 100 mmHg = 13,332.2 Pascals. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: For tire pressure, most vehicles specify PSI in the US and bar or kPa elsewhere. As a rule of thumb, 1 bar ≈ 14.5 PSI, so a typical 2.2 bar tire pressure is about 32 PSI.
mmHg to Pascals — Conversion Table
| mmHg (mmHg) | Pascals (Pa) |
|---|---|
| 0.1 mmHg | 13.3322 Pa |
| 0.25 mmHg | 33.3305 Pa |
| 0.5 mmHg | 66.661 Pa |
| 1 mmHg | 133.322 Pa |
| 2 mmHg | 266.644 Pa |
| 5 mmHg | 666.61 Pa |
| 10 mmHg | 1,333.22 Pa |
| 25 mmHg | 3,333.05 Pa |
| 50 mmHg | 6,666.1 Pa |
| 100 mmHg | 13,332.2 Pa |
| 250 mmHg | 33,330.5 Pa |
| 500 mmHg | 66,661 Pa |
| 1000 mmHg | 133,322 Pa |