How do I convert atmospheres to psi?

Multiply the value in atm by the conversion factor. For example, 10 atm = 146.9594878 psi. Use our calculator above for instant results.

Is the atmospheres to psi 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 atmospheres to psi 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 atmospheres and psi?

Atmospheres (atm) and PSI (psi) are both units of pressure but belong to different measurement systems. 1 atm = 14.69594878 psi. Use the converter above to switch between them instantly.

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

atm → psi Reference Table

atm	psi
0.001 atm	0.01469594878 psi
0.002 atm	0.02939189755 psi
0.003 atm	0.04408784633 psi
0.004 atm	0.0587837951 psi
0.005 atm	0.07347974388 psi
0.006 atm	0.08817569265 psi
0.007 atm	0.1028716414 psi
0.008 atm	0.1175675902 psi
0.009 atm	0.132263539 psi
0.01 atm	0.1469594878 psi
0.02 atm	0.2939189755 psi
0.03 atm	0.4408784633 psi
0.04 atm	0.587837951 psi
0.05 atm	0.7347974388 psi
0.06 atm	0.8817569265 psi
0.07 atm	1.028716414 psi
0.08 atm	1.175675902 psi
0.09 atm	1.32263539 psi
0.1 atm	1.469594878 psi
0.2 atm	2.939189755 psi
0.3 atm	4.408784633 psi
0.4 atm	5.87837951 psi
0.5 atm	7.347974388 psi
0.6 atm	8.817569265 psi
0.7 atm	10.28716414 psi
0.8 atm	11.75675902 psi
0.9 atm	13.2263539 psi
1 atm	14.69594878 psi
1.5 atm	22.04392316 psi
2 atm	29.39189755 psi
2.5 atm	36.73987194 psi
3 atm	44.08784633 psi
3.5 atm	51.43582071 psi
4 atm	58.7837951 psi
4.5 atm	66.13176949 psi
5 atm	73.47974388 psi
5.5 atm	80.82771827 psi
6 atm	88.17569265 psi
6.5 atm	95.52366704 psi
7 atm	102.8716414 psi
7.5 atm	110.2196158 psi
8 atm	117.5675902 psi
8.5 atm	124.9155646 psi
9 atm	132.263539 psi
9.5 atm	139.6115134 psi
10 atm	146.9594878 psi
11 atm	161.6554365 psi
12 atm	176.3513853 psi
13 atm	191.0473341 psi
14 atm	205.7432829 psi
15 atm	220.4392316 psi
16 atm	235.1351804 psi
17 atm	249.8311292 psi
18 atm	264.527078 psi
19 atm	279.2230267 psi
20 atm	293.9189755 psi
25 atm	367.3987194 psi
30 atm	440.8784633 psi
35 atm	514.3582071 psi
40 atm	587.837951 psi
45 atm	661.3176949 psi
50 atm	734.7974388 psi
55 atm	808.2771827 psi
60 atm	881.7569265 psi
65 atm	955.2366704 psi
70 atm	1028.716414 psi
75 atm	1102.196158 psi
80 atm	1175.675902 psi
85 atm	1249.155646 psi
90 atm	1322.63539 psi
95 atm	1396.115134 psi
100 atm	1469.594878 psi
120 atm	1763.513853 psi
125 atm	1836.993597 psi
130 atm	1910.473341 psi
140 atm	2057.432829 psi
150 atm	2204.392316 psi
160 atm	2351.351804 psi
175 atm	2571.791036 psi
180 atm	2645.27078 psi
200 atm	2939.189755 psi
225 atm	3306.588474 psi
250 atm	3673.987194 psi
275 atm	4041.385913 psi
300 atm	4408.784633 psi
350 atm	5143.582071 psi
400 atm	5878.37951 psi
450 atm	6613.176949 psi
500 atm	7347.974388 psi
600 atm	8817.569265 psi
700 atm	10287.16414 psi
750 atm	11021.96158 psi
800 atm	11756.75902 psi
900 atm	13226.3539 psi
1000 atm	14695.94878 psi
1200 atm	17635.13853 psi
1250 atm	18369.93597 psi
1500 atm	22043.92316 psi
1750 atm	25717.91036 psi
2000 atm	29391.89755 psi
2500 atm	36739.87194 psi
3000 atm	44087.84633 psi
4000 atm	58783.7951 psi
4500 atm	66131.76949 psi
5000 atm	73479.74388 psi
6000 atm	88175.69265 psi
7000 atm	102871.6414 psi
7500 atm	110219.6158 psi
8000 atm	117567.5902 psi
9000 atm	132263.539 psi
10000 atm	146959.4878 psi
15000 atm	220439.2316 psi
20000 atm	293918.9755 psi
25000 atm	367398.7194 psi
50000 atm	734797.4388 psi
75000 atm	1102196.158 psi
100000 atm	1469594.878 psi

Why Convert Atmospheres to PSI?

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

Pressure conversions between atm and psi 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 Atmospheres to PSI

To convert atmospheres to psi, use the following formula:

psi = atm × 14.69594878

Example: 1 atm = 14.69594878 psi

For example, 5 atm = 73.47974388 psi, 10 atm = 146.9594878 psi, and 100 atm = 1469.594878 psi. For larger values, 1000 atm = 14695.94878 psi. Conversely, 1 psi = 0.06804596391 atm. 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 Atmosphere?

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

Reference pressure for sea level.

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.

Atmospheres → PSI

Atmospheres to PSI Formula