Bars to Inches Of Mercury
Convert bars to inches of mercury instantly — one bar is 29.53 inches of mercury.
| Bars | Inches Of Mercury |
|---|---|
| 1 bar | 29.52998 inHg |
| 2 bar | 59.05996 inHg |
| 3 bar | 88.58994 inHg |
| 5 bar | 147.649901 inHg |
| 10 bar | 295.299802 inHg |
| 25 bar | 738.249504 inHg |
| 50 bar | 1476.499008 inHg |
| 100 bar | 2952.998016 inHg |
How to use
- Enter a value in the Bars field.
- The Inches Of Mercury figure appears immediately — no button to press.
- Typing in the Inches Of Mercury field converts back to Bars the same way.
- Use the reference table for the values that come up most often.
Bars to Inches Of Mercury formula
To convert bars to inches of mercury, multiply by 29.5299802.
inHg = bar × 29.5299802
Why this factor: the bar and the inch of mercury are both defined against the pascal, so dividing one definition by the other gives 29.5299802 directly. Both definitions are set out in full below.
To go the other way, divide by 29.5299802 — or use the Inches Of Mercury to Bars converter, which is the same calculation reversed.
Worked example
Given 100 bar, multiplying by 29.5299802 yields 2952.998016 inHg.
100 bar × 29.5299802 = 2952.998016 inHg
The converter above does this for any value you type, in either direction.
What is a bar?
A bar is a metric pressure unit chosen to sit very close to atmospheric pressure.
Definition: Exactly 100,000 pascals by definition. Standard atmosphere is 1.01325 bar, so a bar is slightly less.
Where it is used: European tire and hydraulic pressures, diving depth equivalents, and espresso machine ratings.
Worth knowing: Close to one atmosphere but not equal to it — the difference is about 1.3%.
What is an inch of mercury?
An inch of mercury is the pressure of a one-inch mercury column, used for US barometric pressure.
Definition: About 3,386.389 pascals.
Where it is used: US weather barometric pressure, aircraft altimeter settings, and engine vacuum readings.
Bars vs Inches Of Mercury
The bar is a metric unit while the inch of mercury is a US customary unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many inches of mercury are in a bar?
One bar equals 29.5299802 inches of mercury.
What is the formula to convert bars to inches of mercury?
Multiply the number of bars by 29.5299802. To reverse it, divide by 29.5299802 instead.
How do I convert inches of mercury back to bars?
Divide by 29.5299802, which is the same as multiplying by 0.03386389.
How many inches of mercury are in 10 bars?
10 bar works out to 295.299802 inHg.
Is there anything to watch out for with bars?
Close to one atmosphere but not equal to it — the difference is about 1.3%.
How is the bar defined?
Exactly 100,000 pascals by definition. Standard atmosphere is 1.01325 bar, so a bar is slightly less.