Bar to psi, psig, psia, psid Conversion Calculator (+ Bar to psig table)

How many psi is 1 bar? How to convert bar to psi?

bar and psi are both units of pressure, bar is used in the metric system, and psi (pounds per inch square) avoirdupois system (this is a fancy way of referring to a system that uses pounds and ounces as units).

bar vs psi
Pressure gauges typically measure pressure in both bar and psi units.

There is a lot of confusion in converting bar to psi because we have different conversions, i.e. bar for sai, psig from bar, Bar to Psia, Psid. bar for, and so on.

To avoid all confusion, we have used a . Simplified bar to psi conversion by making ‘Bar to Psi Conversion Calculator’ and a table with psi calculated from bars of pressure. Here’s what the calculator looks like (you’ll see it next):

bar to psi calculator
Calculator Example: 20 times is equal to 290.08 psi. You can use this neat calculator below.

We’ll explain the differences between psi, psig, psia, and psid, and how they relate to bar further, but before using a bar to psi converter, let’s quickly get on to what all these units of pressure mean. Let’s go from

what’s different here ‘pounds per inch square’ Pressure units mean:

  • Psi means ‘pound per square inch’. This is the amount of pressure that creates a force of 1 pound of weight on 1 square inch of surface. 1 bar is equal to 14.5037738 psi.
  • Psia means ‘pound per square inch’ Pure, When converting to bars, psi is the same as psi; We add ‘a’ to indicate that it is a measure of absolute pressure relative to vacuum, not pressure relative to atmospheric pressure. 1 bar is equal to 14.5037738 PSI.
  • psig means ‘pounds per square inch’ Measure, When converted to bars, psig is the same as psi and psia; We add ‘g’ to indicate that it is a measure of pressure relative to atmospheric pressure. 1 bar is equal to 14.5037738 psig.
  • Psid means ‘pounds per square inch’ Difference, When converting to bars, psi is the same as psi, psia and psig. We use side when we are measuring pressure relative to something other than atmospheric pressure.

The major output of all these units is:

When converting to bar, all units (psi, psia, psig, psid) are quantitative Same, And 14.5037738 of these units equals 1 bar,

pay attention: The conversion will be different if we convert all kinds of psi units to atmospheric pressure; In the case of bars, we are not doing that. 1 bar is clearly defined as 100,000 pascals or 100 kPa.

This means that when converting bars to psi, psia, psig, and psig, we would always get same Result,

It’s normal to be a little confused by all of these units of pressure. The easiest way to convert bar to psi, bar to psi, bar to psig, and bar to psig is to just use this easy-to-use bar conversion calculator:

Bar to PSI Calculator (Same for PSI, PSIG, and PSID)

You simply enter the number of bars you want to convert to psi, psi, psig, or psig, and the calculator will dynamically calculate ‘pounds per square inch’ units of pressure. You can also play with the numbers a bit:

Let’s illustrate with an example how to use this graph to convert bars to psi units of pressure.

Example: My car tires have 2.3 bar pressure. How many psi is that?

You can use the bar calculator and you will find that 2.3 bar is equal to 33.36 psi. This also means that 2.3 times is equal to:

  • 33.36 PSA
  • 33.36 points.
  • 33.36 PSID.

Quantitatively, when there is no difference between these units with respect to the bars. As we have said before, there will be a difference if these units are in relation to atmospheric pressure.

Let’s take a look at the psig values ​​from some calculated bars. We have summarized them here in the table:

bar to psig table

Number of Bars: PSIG (in pounds per square gauge):
0.01 bar 0.0145 psig
0.1 bar 0.145 psig
1 times 14.50 psig
2 times 29.01 psig
2.3 times 33.36 psig
3 times 43.51 psig
4 times 58.02 psig
5 times 72.52 psig
10 times 145.04 psig
20 times 290.08 psig
30 times 435.11 psig
40 times 580.15 psig
50 times 725.19 psig
60 times 870.23 psig
70 times 1,015.26 psig
80 times 1,160.30 psig
90 times 1,305.34 psig
100 times 1,450.38 psig
200 times 2,900.76 psig

If you have a specific number of bars in mind and want to convert them to psi, you can use the calculator above.

Now, let’s look in more detail at what all these units of pressure mean:

Bar: Metric unit of pressure

In the metric system, we use bar and pascal (Pa) to measure pressure. Bar to 100,000 Pa. defined as, To understand what exactly this means, we have to look at what Pascals actually are.

1 Pascal is defined as a force of 1 Newton (N) of pressure applied to a 1 square meter surface (m.)2) We usually convert Pascal to N/m . label as equal to2, 1 bar only 100,000 N/m . Is2,

that number. What does a bar of pressure practically mean?

1 bar is the amount of pressure that is slightly less than atmospheric pressure at sea level. In fact, at sea level, the pressure you can measure is about 1.013 bar.

If you climb to an altitude of 111 meters above sea level, and the temperature will be 15 °C, your barometer (an instrument that measures air pressure) will read about 1 bar.

Some fellow physicists may be offended if we do not mention that the pascal is an SI unit, but the bar is not an SI unit. This is because a bar is only an option for 100,000 Pa which is quite useful in practical applications such as measuring car tire pressure or even looking at refrigerant pressure-temperature charts (you can see that as an example). I can see the R410A PT chart here).

You can do this Read more about what the bar is here,

Psi or ‘pounds per square inch’ (lbf/in.)2,

In order to convert bar to psi sufficiently, we need to understand what psi really is. Here’s the difference between bar and psi, expressed in simple terms:

  • The force of 100,000 Newton (N) applied to 1 bar 1 square meter (m.) is2) Surface.
  • 1 psi is a force of 1 pound applied to 1 square inch (in.)2) Surface. This is what we mean by psi or ‘pound-force per square inch’.

As you can see, none of the units matched here. That’s why converting bar to psi is so difficult.

If you want to convert bar to psi, you must first convert psi to pascal (Pa). 1 Psi is equal to 6895 Pa. You can read more about Here’s the difference between psi, psi, psig, and psid,

Here’s how you can convert the bar to psi unit-by-unit:

How to Convert Bars to Psi Step-by-Step

We know that 1 bar is equal to 100,000 Pa. We also know that 1 Pa 1 N/m . Is equal to2 And 1 psi is equal to 1 lb of force per square inch (lbf/in.)2,

For bar to psi conversion, we need to first convert psi to Pa. practically means we need to convert lbf/in2 to n/m2, Here’s how we do it:

  • easy share (surface conversion): 1 square meter2 1,550.0031 in. Is equal to2, This means that 1 square inch is equal to 0.00064516 square meters.
  • the hard part (force conversion): 1 N to kg*m/s. defined as2, To convert to pound-force, we need to know that 1 lb = 0.45359237 kg, and the gravitational acceleration in pounds is expressed as 32.174049 ft/s2.

There are quite a few steps when converting 1 lbf to N. here is a derivation from Wikipedia,

how to convert newton to pound force for bar to psig conversion

Basically, we need to know that 1 lbf is equal to 4.4482216152605 N. Now let’s convert lbf/in.2 to n/m2,

lbf/inch2 = 0.4539237 kg / 0.00064516 square meter2 = 703.069579639 kg/m2

This means that 1 psi is equal to 703.069579639 Pa. We know that 1 bar is equal to 100,000 Pa. To calculate psi from 1 bar, we divide 100,000 Pa by 703.069579639 Pa.

This is a fairly complex derivation. If you have any questions about converting bar to psi, you can use the comments below and we’ll try to help.


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