Convert Bars to Inches of mercury
1 bar is 29.52998 inHg. One bar is exactly 29.5299801647 inches of mercury.
One bar is 29.52998 inches of mercury. To convert bars to inches of mercury, multiply by 29.52998; to go the other way, divide by 29.52998 or multiply by 0.03386389. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly 100,000 pascals by definition, chosen because it sits within a per cent of atmospheric pressure at sea level.
Factor checked against the defining standard · How we check
- Bars × 29.52998
value * 29.529980164729.53 inHg
1 bar in every pressure unit
| Unit | Value | Exact factor |
|---|---|---|
| pounds per square inch | 14.50377377 psi | × 14.503773773 |
| bars (as entered) | 1 bar | — |
| pascals | 100,000 Pa | × 100,000 |
| kilopascals | 100 kPa | × 100 |
| megapascals | 0.1 MPa | × 0.1 |
| atmospheres | 0.9869232667 atm | × 0.986923266716 |
| torr | 750.0616827 Torr | × 750.061682704 |
| inches of mercury | 29.52998016 inHg | × 29.5299801647 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert bars to inches of mercury?
- 1.Take the measurement in bars.
- 2.Multiply by 29.52998 — that is how many inches of mercury fit in one bar.
- 3.To go back the other way, divide by 29.52998, or multiply by 0.03386389.
Worked example: 25 bars to inches of mercury
- Formula
- bar × 29.52998 = inHg
- Arithmetic
- 25 × 29.52998 = 738.249504 inHg
- Answer
- 25 bar = 738.249504 inHg
The factor is rounded for display; the figure above is computed from the full value.
Bars to inches of mercury conversion table
| Bars | Inches of mercury |
|---|---|
| 1 bar | 29.52998 inHg |
| 2 bar | 59.05996 inHg |
| 3 bar | 88.58994 inHg |
| 4 bar | 118.119921 inHg |
| 5 bar | 147.649901 inHg |
| 6 bar | 177.179881 inHg |
| 7 bar | 206.709861 inHg |
| 8 bar | 236.239841 inHg |
| 9 bar | 265.769821 inHg |
| 10 bar | 295.299802 inHg |
| 12 bar | 354.359762 inHg |
| 15 bar | 442.949702 inHg |
| 20 bar | 590.599603 inHg |
| 25 bar | 738.249504 inHg |
| 50 bar | 1,476.499008 inHg |
| 100 bar | 2,952.998016 inHg |
| 200 bar | 5,905.996033 inHg |
| 300 bar | 8,858.994049 inHg |
| 500 bar | 14,764.990082 inHg |
| 1000 bar | 29,529.980165 inHg |
| 2000 bar | 59,059.960329 inHg |
| 5000 bar | 147,649.900824 inHg |
| 10000 bar | 295,299.801647 inHg |
What is a bar?
Exactly 100,000 pascals by definition, chosen because it sits within a per cent of atmospheric pressure at sea level. European tyre placards and dive computers use it.
What is an inch of mercury?
The pressure of a one-inch column of mercury at 0 °C, fixed by convention at 3,386.389 pascals. US aviation altimeters and barometers read in it.
How many inches of mercury are in a bar?
One bar is 29.52998 inches of mercury. Going the other way, one inch of mercury is 0.03386389 bars. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every pressure unit here
| Unit | Symbol | One of these is |
|---|---|---|
| Pounds per square inch | psi | 6894.7573 pascal |
| Bars | bar | 100000 pascal |
| Pascals | Pa | the base unit |
| Kilopascals | kPa | 1000 pascal |
| Megapascals | MPa | 1000000 pascal |
| Atmospheres | atm | 101325 pascal |
| Torr | Torr | 133.32237 pascal |
| Inches of mercury | inHg | 3386.389 pascal |
Questions people actually ask
- How many inches of mercury are in a bar?
- 29.52998. The pressure of a one-inch column of mercury at 0 °C, fixed by convention at 3,386.389 pascals. US aviation altimeters and barometers read in it.
- How do I convert inches of mercury back to bars?
- Divide by 29.52998, or multiply by 0.03386389 — they are the same operation.
Other pressure conversions
Inches of mercury to bars — the same conversion the other way.