Atmospheres to PSI Converter
Quick answer: To convert atmospheres to PSI, multiply by 14.69595. For example, 10 atm is 146.9595 psi. One standard atmosphere equals 14.69595 psi.
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Use the Atmospheres to PSI Converter
Atmospheres to PSI formula and what each symbol means
psi = atm × 14.69595
| Symbol | Meaning |
|---|---|
| atm | Standard atmosphere |
| psi | Pound per square inch |
Atmospheres to PSI examples
1 atm
1 atm × 14.69595 = 14.69595 psi.
10 atm
10 atm × 14.69595 = 146.9595 psi.
100 atm
100 atm × 14.69595 = 1,469.595 psi.
Atmospheres compared with PSI
One atm is 14.7 times as large as one psi, so your number gets bigger when you convert atmospheres to PSI and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About atmospheres and PSI
Standard atmosphere (atm): Standard atmosphere, exactly 101,325 pascals. Pound per square inch (psi): One pound-force per square inch, about 6,894.757 pascals.
Where atmospheres to PSI conversions are used
Hydraulics, boilers and pneumatic tools list their limits in bar, psi or MPa. Tyre pressure is shown in psi, bar or kPa, depending on the vehicle and country.
How to calculate Atmospheres to PSI step by step
- Enter the value in atm (the starting unit).
- Multiply by 14.69595, because 1 atm = 14.69595 psi.
- The product is the value in psi. To go back, divide by 14.69595 or multiply by 0.06804596.
Popular pressure conversions
How to read your Atmospheres to PSI result
Quick estimate: multiply by about 14.7 to get PSI from atmospheres; this is within 0.1% of the exact factor. One standard atmosphere is exactly 101,325 Pa, and one bar is exactly 100,000 Pa.
| ATMOSPHERES | PSI |
|---|---|
| 1 | 14.69595 |
| 2 | 29.3919 |
| 5 | 73.47974 |
| 10 | 146.9595 |
| 20 | 293.919 |
| 50 | 734.7974 |
| 100 | 1,469.595 |
| 1,000 | 14,695.95 |
PSI to Atmospheres: quick table
| PSI | ATMOSPHERES |
|---|---|
| 1 | 0.06804596 |
| 5 | 0.3402298 |
| 10 | 0.6804596 |
| 25 | 1.701149 |
| 50 | 3.402298 |
| 100 | 6.804596 |
| 250 | 17.01149 |
| 500 | 34.02298 |
Common mistakes when calculating Atmospheres to PSI
- Reading mmHg and Torr as clearly different units: they differ by only about one part in seven million.
- Dividing when you should multiply: from atm to psi multiply by 14.69595; from psi to atm divide by 14.69595.
Atmospheres to PSI FAQ
How many psi are in 1 atm?
1 atm equals 14.69595 psi.
How many atm are in 1 psi?
1 psi equals 0.06804596 atm.
Is 1 atm = 14.69595 psi an exact conversion?
The factor is shown rounded to 7 significant figures (14.69595). The calculator above uses more digits.
What is a pound per square inch (psi)?
One pound-force per square inch, about 6,894.757 pascals.
How can I estimate atmospheres to PSI in my head?
Quick estimate: multiply by about 14.7 to get PSI from atmospheres; this is within 0.1% of the exact factor.
What is 12 atm in PSI?
12 atm = 176.3514 psi (since 12 × 14.69595).
What is 60 atm in PSI?
60 atm = 881.7569 psi (since 60 × 14.69595).
What is 250 atm in PSI?
250 atm = 3,673.987 psi (since 250 × 14.69595).
How many decimals should I keep when converting atm to psi?
Match the precision of your original measurement. For example, 146.9595 psi rounds to 147 psi at 3 significant figures; keep more digits only for engineering or scientific work.
More in Pressure converters
- Bar to mmHg Converter
- Atmospheres to kPa Converter
- Bar to Pascals Converter
- Atmospheres to Bar Converter
- Bar to PSI Converter
- PSI to Pascals Converter
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Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the SI derived units