Inches of Mercury to Bar
Convert inches of mercury to bar instantly. 1 inHg = 0.03386389 bar. Includes the exact factor, a conversion table of common values and the definition of both units.
How to convert inches of mercury to bar
To convert inches of mercury to bar, divide by 29.5299801647 (multiply by 0.03386389). The relationship is fixed, so the same factor works for any quantity — there is nothing to look up and nothing that changes with temperature, location or context.
bar = inHg × 0.03386389
Inches of Mercury to Bar conversion table
The values people look up most often, rounded for reading. Use the calculator above for anything in between.
| Inches of Mercury | Bar |
|---|---|
| 1 inHg | 0.033864 bar |
| 2 inHg | 0.067728 bar |
| 3 inHg | 0.101592 bar |
| 5 inHg | 0.169319 bar |
| 10 inHg | 0.338639 bar |
| 20 inHg | 0.677278 bar |
| 25 inHg | 0.846597 bar |
| 50 inHg | 1.693194 bar |
| 100 inHg | 3.386389 bar |
| 500 inHg | 16.931945 bar |
| 1,000 inHg | 33.86389 bar |
What is a inches of mercury?
The aviation altimeter unit: 29.92 inHg is standard sea-level pressure.
What is a bar?
Defined as exactly 100 kPa, very close to one atmosphere at sea level.
The formula
bar = inHg × 0.03386389
Every result on this page comes from this formula. Nothing is rounded until the final display, so figures match a spreadsheet to the cent.
How to use the Inches of Mercury to Bar
- Type the number of inches of mercury you want to convert.
- Read the result in bar straight away — there is no button to press.
- Check the table below for the values that come up most often, or reverse the conversion with the linked bar to inches of mercury page.
Inches of Mercury to Bar — frequently asked questions
How many bar are in a inches of mercury?
One inches of mercury equals 0.03386389 bar. bar = inHg × 0.03386389
What is the formula to convert inches of mercury to bar?
The formula is bar = inHg × 0.03386389. It is an exact definition rather than an approximation, so the conversion never drifts no matter how large the number.
How do I convert bar back to inches of mercury?
Divide instead of multiplying: one bar is 29.5299801647 inHg. The reverse converter is linked in the related tools list.
Is this conversion exact?
Yes. Both units are defined against the same base unit by international agreement, so the factor is exact — any rounding you see is only in the display, which you can widen by entering more decimal places.
Is this inches of mercury to bar free to use?
Yes. Every calculator on the site is free, needs no sign-up, and runs entirely in your browser, so your figures never leave your device.
What people search for
This page answers each of these searches. They are the exact phrases visitors use to find the inches of mercury to bar.
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About this calculator
Written and reviewed by The Samsung Calculator editorial team. Every calculator is written against a published formula, reviewed against at least one independent reference implementation, and dated when it changes.
Last reviewed August 19, 2026 · Calculation runs client-side · No data collected · Report an error