Calculate inches of vacuum to psi or psi to inches of vacuum from one entered value, with conversions for cm, mm, m, bar, kPa, and Pa as well.
Inches of Vacuum to Psi Formula
The following formula is used to convert inches of vacuum to psi.
P = (V / 29.92) * 14.696
Variables:
- P is the pressure in psi
- V is the inches of vacuum
To convert inches of vacuum to psi, divide the inches of vacuum by 29.92 and then multiply the result by 14.696.
| Inches of Vacuum (inHg) | Pressure (Psi) |
|---|---|
| 1 | 0.491 |
| 2 | 0.982 |
| 3 | 1.473 |
| 5 | 2.456 |
| 7.5 | 3.684 |
| 10 | 4.912 |
| 12 | 5.894 |
| 15 | 7.367 |
| 17 | 8.350 |
| 18 | 8.841 |
| 19 | 9.332 |
| 20 | 9.823 |
| 22 | 10.805 |
| 23 | 11.297 |
| 24 | 11.788 |
| 25 | 12.279 |
| 26 | 12.770 |
| 27 | 13.261 |
| 28 | 13.752 |
| 29.92 | 14.695 |
| *Assumes inches of mercury (inHg) at 0°C, standard gravity. Conversion: 1 inHg ≈ 0.491154 psi; 29.92 inHg ≈ 14.696 psi. | |
What is Inches of Vacuum?
Inches of vacuum is a unit of measurement used to quantify the level of vacuum pressure. It represents the difference between the atmospheric pressure and the pressure inside a vacuum system. A higher value in inches of vacuum indicates a stronger vacuum, meaning lower pressure inside the system compared to the atmospheric pressure. This measurement is commonly used in various applications, including HVAC systems, automotive engines, and laboratory equipment, to monitor and control vacuum conditions.
How to Calculate Inches of Vacuum to Psi?
The following steps outline how to calculate the conversion from inches of vacuum to psi.
- First, measure the inches of vacuum (V).
- Next, use the formula P = (V / 29.92) * 14.696 to calculate the pressure in psi.
- Insert the measured value of inches of vacuum into the formula and calculate the result.
- Finally, check your answer with the calculator above.
Example Problem :
Use the following variables as an example problem to test your knowledge.
Inches of Vacuum (V) = 15
Using the formula P = (V / 29.92) * 14.696, the pressure in psi can be calculated.