PSI to Atmospheres (psi → atm) — Free Online Converter

psi → atm Reference Table

psi	atm
0.001 psi	0.00006804596391 atm
0.002 psi	0.0001360919278 atm
0.003 psi	0.0002041378917 atm
0.004 psi	0.0002721838556 atm
0.005 psi	0.0003402298195 atm
0.006 psi	0.0004082757835 atm
0.007 psi	0.0004763217474 atm
0.008 psi	0.0005443677113 atm
0.009 psi	0.0006124136752 atm
0.01 psi	0.0006804596391 atm
0.02 psi	0.001360919278 atm
0.03 psi	0.002041378917 atm
0.04 psi	0.002721838556 atm
0.05 psi	0.003402298195 atm
0.06 psi	0.004082757835 atm
0.07 psi	0.004763217474 atm
0.08 psi	0.005443677113 atm
0.09 psi	0.006124136752 atm
0.1 psi	0.006804596391 atm
0.2 psi	0.01360919278 atm
0.3 psi	0.02041378917 atm
0.4 psi	0.02721838556 atm
0.5 psi	0.03402298195 atm
0.6 psi	0.04082757835 atm
0.7 psi	0.04763217474 atm
0.8 psi	0.05443677113 atm
0.9 psi	0.06124136752 atm
1 psi	0.06804596391 atm
1.5 psi	0.1020689459 atm
2 psi	0.1360919278 atm
2.5 psi	0.1701149098 atm
3 psi	0.2041378917 atm
3.5 psi	0.2381608737 atm
4 psi	0.2721838556 atm
4.5 psi	0.3062068376 atm
5 psi	0.3402298195 atm
5.5 psi	0.3742528015 atm
6 psi	0.4082757835 atm
6.5 psi	0.4422987654 atm
7 psi	0.4763217474 atm
7.5 psi	0.5103447293 atm
8 psi	0.5443677113 atm
8.5 psi	0.5783906932 atm
9 psi	0.6124136752 atm
9.5 psi	0.6464366571 atm
10 psi	0.6804596391 atm
11 psi	0.748505603 atm
12 psi	0.8165515669 atm
13 psi	0.8845975308 atm
14 psi	0.9526434947 atm
15 psi	1.020689459 atm
16 psi	1.088735423 atm
17 psi	1.156781386 atm
18 psi	1.22482735 atm
19 psi	1.292873314 atm
20 psi	1.360919278 atm
25 psi	1.701149098 atm
30 psi	2.041378917 atm
35 psi	2.381608737 atm
40 psi	2.721838556 atm
45 psi	3.062068376 atm
50 psi	3.402298195 atm
55 psi	3.742528015 atm
60 psi	4.082757835 atm
65 psi	4.422987654 atm
70 psi	4.763217474 atm
75 psi	5.103447293 atm
80 psi	5.443677113 atm
85 psi	5.783906932 atm
90 psi	6.124136752 atm
95 psi	6.464366571 atm
100 psi	6.804596391 atm
120 psi	8.165515669 atm
125 psi	8.505745489 atm
130 psi	8.845975308 atm
140 psi	9.526434947 atm
150 psi	10.20689459 atm
160 psi	10.88735423 atm
175 psi	11.90804368 atm
180 psi	12.2482735 atm
200 psi	13.60919278 atm
225 psi	15.31034188 atm
250 psi	17.01149098 atm
275 psi	18.71264008 atm
300 psi	20.41378917 atm
350 psi	23.81608737 atm
400 psi	27.21838556 atm
450 psi	30.62068376 atm
500 psi	34.02298195 atm
600 psi	40.82757835 atm
700 psi	47.63217474 atm
750 psi	51.03447293 atm
800 psi	54.43677113 atm
900 psi	61.24136752 atm
1000 psi	68.04596391 atm
1200 psi	81.65515669 atm
1250 psi	85.05745489 atm
1500 psi	102.0689459 atm
1750 psi	119.0804368 atm
2000 psi	136.0919278 atm
2500 psi	170.1149098 atm
3000 psi	204.1378917 atm
4000 psi	272.1838556 atm
4500 psi	306.2068376 atm
5000 psi	340.2298195 atm
6000 psi	408.2757835 atm
7000 psi	476.3217474 atm
7500 psi	510.3447293 atm
8000 psi	544.3677113 atm
9000 psi	612.4136752 atm
10000 psi	680.4596391 atm
15000 psi	1020.689459 atm
20000 psi	1360.919278 atm
25000 psi	1701.149098 atm
50000 psi	3402.298195 atm
75000 psi	5103.447293 atm
100000 psi	6804.596391 atm

Why Convert PSI to Atmospheres?

Converting between psi (psi) and atmospheres (atm) is one of the most common pressure conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert psi to atm saves time and prevents errors.

Pressure conversions between psi and atm are vital in automotive maintenance, meteorology, and scuba diving. Tire pressure affects fuel efficiency and safety, requiring drivers to convert between PSI and bar depending on the gauge used. Divers must strictly monitor pressure to avoid decompression sickness, often needing to convert depth and tank pressure readings. In weather forecasting, atmospheric pressure changes indicate approaching storms, with data often shared in different units globally. Failing to convert pressure accurately can lead to equipment failure, tire blowouts, or life-threatening situations underwater.

How to Convert PSI to Atmospheres

To convert psi to atmospheres, use the following formula:

atm = psi × 0.06804596391

Example: 1 psi = 0.06804596391 atm

For example, 5 psi = 0.3402298195 atm, 10 psi = 0.6804596391 atm, and 100 psi = 6.804596391 atm. For larger values, 1000 psi = 68.04596391 atm. Conversely, 1 atm = 14.69594878 psi. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

Gauge vs Absolute: confusing gauge pressure (psig) with absolute pressure (psia).
Bar vs Pascal: 1 Bar is 100,000 Pascals, not 10 or 100.
Atmosphere variations: confusing standard atm with technical atm.

Pro Tips

Tire checks: Check tire pressure when cold (tires heat up and pressure rises while driving).
PSI rule: Typical car tires are 30-35 PSI.
Altitude effect: Air pressure drops as you go higher (ears popping).

What is a PSI?

PSI (Pounds per Square Inch) is a unit of pressure in the Imperial and US customary systems. It represents the force of one pound-force applied to an area of one square inch.

PSI is the standard unit for tire pressure, industrial hydraulics, and compressed gas systems in the United States and UK.

What is a Atmosphere?

Standard atmosphere (atm), defined as 101,325 Pascals.

Reference pressure for sea level.

Frequently Asked Questions

How many atmospheres are in 1 psi?

1 psi equals 0.06804596391 atm.

How do I convert psi to atmospheres?

Multiply the value in psi by the conversion factor. For example, 10 psi = 0.6804596391 atm. Use our calculator above for instant results.

Is the psi to atmospheres conversion exact?

This conversion uses NIST SP 811 factors with 10-digit precision, which is more than sufficient for all practical purposes.

Can I convert psi to atmospheres offline?

Yes! OmniConvert runs entirely in your browser — no internet connection needed after the page loads. Your data never leaves your device, ensuring complete privacy.

What is the difference between psi and atmospheres?

PSI (psi) and Atmospheres (atm) are both units of pressure but belong to different measurement systems. 1 psi = 0.06804596391 atm. Use the converter above to switch between them instantly.

PSI → Atmospheres