How to Convert Bar to Inches of mercury (bar to inHg)
Pressure conversions are used for tyre pressure (psi or bar), blood pressure readings in mmHg and weather maps in millibars. This guide shows how to convert bar into inches of mercury by hand, with examples and a quick-reference table.
The conversion
To convert bar to inches of mercury, multiply the value by 29.5299801647. To go the other way, divide by the same number (or multiply by 0.03386389). For a quick estimate, multiply by about 30.
Inches of mercury = bar × 29.5299801647
Worked examples
- 3 bar = 88.5899 inHg
- 12.5 bar = 369.1248 inHg
- 75 bar = 2,214.75 inHg
Bar to Inches of mercury table
| Bar | Inches of mercury |
|---|---|
| 1 bar | 29.53 inHg |
| 2 bar | 59.06 inHg |
| 5 bar | 147.6499 inHg |
| 10 bar | 295.2998 inHg |
| 20 bar | 590.5996 inHg |
| 25 bar | 738.2495 inHg |
| 50 bar | 1,476.5 inHg |
| 100 bar | 2,953 inHg |
| 250 bar | 7,382.5 inHg |
| 500 bar | 14,764.99 inHg |
| 1,000 bar | 29,529.98 inHg |
Common questions
Is bar to inHg exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Inches of mercury to Bar converter.
Mistakes to avoid
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Multiplying when you should divide
Converting to a smaller unit gives a bigger number, and converting to a larger unit gives a smaller one. If your answer moves the wrong way, you have inverted the factor.
Mixing similar-sounding units
US and imperial gallons, pints and tons are different sizes, and decimal kilobytes differ from binary kibibytes.
Background
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.
For any value, use the Bar to Inches of mercury Converter or browse all pressure converters.
Run your own numbers: Bar to Inches of mercury Converter