Pounds per Square Inch to Atmospheres Conversion (psi to atm)

Pounds per Square Inch to Atmospheres Converter

Enter the pressure in pounds per square inch below to get the value converted to atmospheres.

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Result in Atmospheres:

1 psi = 0.068046 atm

How to Convert Pounds per Square Inch to Atmospheres

To convert a measurement in pounds per square inch to a measurement in atmospheres, multiply the pressure by the following conversion ratio: 0.068046 atmospheres/pound per square inch.

Since one pound per square inch is equal to 0.068046 atmospheres, you can use this simple formula to convert:

atmospheres = pounds per square inch × 0.068046

The pressure in atmospheres is equal to the pressure in pounds per square inch multiplied by 0.068046.

For example, here's how to convert 5 pounds per square inch to atmospheres using the formula above.

atmospheres = (5 psi × 0.068046) = 0.340229 atm

Pounds per square inch and atmospheres are both units used to measure pressure. Keep reading to learn more about each unit of measure.

What Are Pounds per Square Inch?

One pound per square inch is the pressure of equal to one pound-force per square inch.

The pound per square inch is a US customary and imperial unit of pressure. A pound per square inch is sometimes also referred to as a pound-force per square inch. Pounds per square inch can be abbreviated as psi; for example, 1 pound per square inch can be written as 1 psi.

PSI can be expressed using the formula:
1 psi = 1 lbf / in²

Pressure in pounds per square inch are equal to the pound-force divided by the area in square inches.

Learn more about pounds per square inch.

What Is an Atmosphere?

The atmosphere is a reference measure of pressure equal to 101,325 pascals or 1,013,250 dynes. The atmosphere was originally defined as the pressure of 760 millimeters of mercury at standard gravity at 0 °C, but was later redefined in 1954 to be equal to 1,013,250 dynes.

Atmospheres can be abbreviated as atm; for example, 1 atmosphere can be written as 1 atm.

Learn more about atmospheres.

Pound per Square Inch to Atmosphere Conversion Table

Table showing various pound per square inch measurements converted to atmospheres.
Pounds Per Square Inch	Atmospheres
1 psi	0.068046 atm
2 psi	0.136092 atm
3 psi	0.204138 atm
4 psi	0.272184 atm
5 psi	0.340229 atm
6 psi	0.408275 atm
7 psi	0.476321 atm
8 psi	0.544367 atm
9 psi	0.612413 atm
10 psi	0.680459 atm
11 psi	0.748505 atm
12 psi	0.816551 atm
13 psi	0.884597 atm
14 psi	0.952642 atm
15 psi	1.0207 atm
16 psi	1.0887 atm
17 psi	1.1568 atm
18 psi	1.2248 atm
19 psi	1.2929 atm
20 psi	1.3609 atm
21 psi	1.429 atm
22 psi	1.497 atm
23 psi	1.5651 atm
24 psi	1.6331 atm
25 psi	1.7011 atm
26 psi	1.7692 atm
27 psi	1.8372 atm
28 psi	1.9053 atm
29 psi	1.9733 atm
30 psi	2.0414 atm
31 psi	2.1094 atm
32 psi	2.1775 atm
33 psi	2.2455 atm
34 psi	2.3136 atm
35 psi	2.3816 atm
36 psi	2.4497 atm
37 psi	2.5177 atm
38 psi	2.5857 atm
39 psi	2.6538 atm
40 psi	2.7218 atm

Table showing various pound per square inch measurements converted to atmospheres.

Pounds Per Square Inch

Atmospheres

1 psi

0.068046 atm

2 psi

0.136092 atm

3 psi

0.204138 atm

4 psi

0.272184 atm

5 psi

0.340229 atm

6 psi

0.408275 atm

7 psi

0.476321 atm

8 psi

0.544367 atm

9 psi

0.612413 atm

10 psi

0.680459 atm

11 psi

0.748505 atm

12 psi

0.816551 atm

13 psi

0.884597 atm

14 psi

0.952642 atm

15 psi

1.0207 atm

16 psi

1.0887 atm

17 psi

1.1568 atm

18 psi

1.2248 atm

19 psi

1.2929 atm

20 psi

1.3609 atm

21 psi

1.429 atm

22 psi

1.497 atm

23 psi

1.5651 atm

24 psi

1.6331 atm

25 psi

1.7011 atm

26 psi

1.7692 atm

27 psi

1.8372 atm

28 psi

1.9053 atm

29 psi

1.9733 atm

30 psi

2.0414 atm

31 psi

2.1094 atm

32 psi

2.1775 atm

33 psi

2.2455 atm

34 psi

2.3136 atm

35 psi

2.3816 atm

36 psi

2.4497 atm

37 psi

2.5177 atm

38 psi

2.5857 atm

39 psi

2.6538 atm

40 psi

2.7218 atm