# in hg to psi Converter – Easy Calculation

Here you can use the completely free in hg to psi converter tool. So you can make this conversion very easy. And you can find the important information that you need to know about this topic.

**Table of Contents;**show

## How to Use in hg to psi Converter?

The use of the in hg to psi converter tool is very simple. You just need to select the direction of the calculation. And then enter the value that you want to convert to another system. And click on the “Calculate” button to see the calculation.

Also, you can click on “Reset” to make another calculation. So, the calculation is very simple as you see above.

## How to Make in hg to psi Conversion?

Also, making a conversion between the in hg to psi is a very simple process. One thing you need to know about this conversion, 1 in/hg is equal to 0.491154 psi. So, you just need to multiply the psi value by 0.491154 to make the conversion. It is very simple like this.

And also if you want to make the conversion from in/hg to psi, you just need to divide the in/hg value by 0.491154 to find the psi value.

As you see, the conversion of hg to psi is very simple.

## What is in/hg?

Like the psi, it is a SI unit of pressure. The meaning of this unit is Inch of Mercury. Most people are curious about what the inch of mercury means.

You know that there is a renowned scientist called Torricelli who made an experiment on the sea level. This experiment comprises the making the measurement of the atmospheric pressure with a contraction.

The contraption includes a vacuumed tube that is dipped inside a bowl of mercury. The atmospheric pressure at 0 degrees Celsius at the sea level is acting on the free surface of the mercury. This makes the mercury climb over the hollow and vacuumed tube. This climb is 760 mm or 29.92 inches. After this incident, we know the atmospheric pressure as 760 mm/Hg or 29.92 in/Hg. So this convention comes from this experiment.

And while we are defining the atmospheric pressure or vacuum pressures of the environments, we use the in/hg unit of measurement. And 1 in/hg equals 1/29.92 of the atmospheric pressure at 0 degrees of Celcius at sea level.

### Where Do We Use the in hg?

There are different areas that we use in hg. The first one is aerospace. The pitot tube measures the atmospheric pressure at elevated places. And this gives the pğressure in the hg unit. And pilots can understand the elevation and the pressure according to the atmospheric pressure.

Also, the use of the in hg is very common in automotive engineering. Because of this, lots of people from these areas are using these conversions.

## What is psi?

As you understand that the psi is another pressure unit. Because we can only make conversions between the same units. Think about the apple-to-apple comparison.

This means the psi is pounds per square inch. The total force that falls to the unit area. This is a very conventional pressure value that we use in the English units.

So most people are using psi pressure daily. Think about how you are inflating the tires of your car with the psi value.

One atmospheric pressure is equal to 14.695 psi. And if you inflate the tires of your car to 30 psi, you are nearly applying twofold pressure to the tires of your car.

Also, the use of psi is very common in engineering applications. In structural engineering, we generally calculate the stress levels on mechanical applications to see if they can withstand the stress levels. We know the maximum stress levels of materials in terms of the psi, and if the stress levels exceed these maxişmum stress levels in engineering systems, cracks and fractures take place. Also, the use of the N/mm2 is the SI equivalent of the psi.

So, it is a very important calculation that we generally make for them.

## Last Words on in hg to psi Conversion

These are the general points that we can state about the in hg to psi conversion. The conversion is very simple and most people are using this conversion for different kinds of calculations. And it is completely free to use this calculator and conversion. You can use it in your complex calculations which will make your calculations much easier.

If you have any questions about this conversion, please leave them below. And also you can find other kinds of useful calculators and conversion tools at fmechanic.com!

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## FAQs

**What does PSI stand for?**The meaning of psi is the “pounds per square inch” that states the total force on the unit area. The PSI is the acronym for this.

**How do you calculate PSI pressure?**You need to measure the total force and divide this force by the total inch square of the area. And you will find the psi calculation easily.

**How strong is 1 PSI?**If we compare it with the atmospheric pressure, you need to divide the atmospheric pressure by 14.695 to find the 1 psi. So, it is not strong.

**What is an inHg vacuum?**The atmospheric pressure at sea level and 0 degree Celsius is equal to 29.92 in/Hg. So, the pressure levels below 29.92 inHg are the vacuum pressure.

**What does 30 inHg mean?**The meaning of the 30 inHg is nearly equal to the atmospheric pressure. So it is very normal pressure.