atmosphere | 1 atm | 2 atm | 3 atm | 4 atm | 5 atm | 6 atm | 7 atm | 8 atm | 9 atm | 10 atm | 11 atm | 12 atm | 13 atm | 14 atm | 15 atm | 16 atm | 17 atm | 18 atm | 19 atm | 20 atm | 21 atm | 22 atm | 23 atm | 24 atm | 25 atm | 26 atm | 27 atm | 28 atm | 29 atm | 30 atm | 31 atm | 32 atm | 33 atm | 34 atm | 35 atm | 36 atm | 37 atm | 38 atm | 39 atm | 40 atm | 41 atm | 42 atm | 43 atm | 44 atm | 45 atm | 46 atm | 47 atm | 48 atm | 49 atm | 50 atm | 51 atm | 52 atm | 53 atm | 54 atm | 55 atm | 56 atm | 57 atm | 58 atm | 59 atm | 60 atm | 61 atm | 62 atm | 63 atm | 64 atm | 65 atm | 66 atm | 67 atm | 68 atm | 69 atm | 70 atm | 71 atm | 72 atm | 73 atm | 74 atm | 75 atm | 76 atm | 77 atm | 78 atm | 79 atm | 80 atm | 81 atm | 82 atm | 83 atm | 84 atm | 85 atm | 86 atm | 87 atm | 88 atm | 89 atm | 90 atm | 91 atm | 92 atm | 93 atm | 94 atm | 95 atm | 96 atm | 97 atm | 98 atm | 99 atm | 100 atm |
pound per (square inch) | 14.6959488 lb/in2 | 29.3918976 lb/in2 | 44.0878463 lb/in2 | 58.7837951 lb/in2 | 73.4797439 lb/in2 | 88.1756927 lb/in2 | 102.8716414 lb/in2 | 117.5675902 lb/in2 | 132.2635390 lb/in2 | 146.9594878 lb/in2 | 161.6554365 lb/in2 | 176.3513853 lb/in2 | 191.0473341 lb/in2 | 205.7432829 lb/in2 | 220.4392316 lb/in2 | 235.1351804 lb/in2 | 249.8311292 lb/in2 | 264.5270780 lb/in2 | 279.2230267 lb/in2 | 293.9189755 lb/in2 | 308.6149243 lb/in2 | 323.3108731 lb/in2 | 338.0068218 lb/in2 | 352.7027706 lb/in2 | 367.3987194 lb/in2 | 382.0946682 lb/in2 | 396.7906169 lb/in2 | 411.4865657 lb/in2 | 426.1825145 lb/in2 | 440.8784633 lb/in2 | 455.5744120 lb/in2 | 470.2703608 lb/in2 | 484.9663096 lb/in2 | 499.6622584 lb/in2 | 514.3582071 lb/in2 | 529.0541559 lb/in2 | 543.7501047 lb/in2 | 558.4460535 lb/in2 | 573.1420022 lb/in2 | 587.8379510 lb/in2 | 602.5338998 lb/in2 | 617.2298486 lb/in2 | 631.9257973 lb/in2 | 646.6217461 lb/in2 | 661.3176949 lb/in2 | 676.0136437 lb/in2 | 690.7095924 lb/in2 | 705.4055412 lb/in2 | 720.1014900 lb/in2 | 734.7974388 lb/in2 | 749.4933876 lb/in2 | 764.1893363 lb/in2 | 778.8852851 lb/in2 | 793.5812339 lb/in2 | 808.2771827 lb/in2 | 822.9731314 lb/in2 | 837.6690802 lb/in2 | 852.3650290 lb/in2 | 867.0609778 lb/in2 | 881.7569265 lb/in2 | 896.4528753 lb/in2 | 911.1488241 lb/in2 | 925.8447729 lb/in2 | 940.5407216 lb/in2 | 955.2366704 lb/in2 | 969.9326192 lb/in2 | 984.6285680 lb/in2 | 999.3245167 lb/in2 | 1,014.0204655 lb/in2 | 1,028.7164143 lb/in2 | 1,043.4123631 lb/in2 | 1,058.1083118 lb/in2 | 1,072.8042606 lb/in2 | 1,087.5002094 lb/in2 | 1,102.1961582 lb/in2 | 1,116.8921069 lb/in2 | 1,131.5880557 lb/in2 | 1,146.2840045 lb/in2 | 1,160.9799533 lb/in2 | 1,175.6759020 lb/in2 | 1,190.3718508 lb/in2 | 1,205.0677996 lb/in2 | 1,219.7637484 lb/in2 | 1,234.4596971 lb/in2 | 1,249.1556459 lb/in2 | 1,263.8515947 lb/in2 | 1,278.5475435 lb/in2 | 1,293.2434922 lb/in2 | 1,307.9394410 lb/in2 | 1,322.6353898 lb/in2 | 1,337.3313386 lb/in2 | 1,352.0272873 lb/in2 | 1,366.7232361 lb/in2 | 1,381.4191849 lb/in2 | 1,396.1151337 lb/in2 | 1,410.8110824 lb/in2 | 1,425.5070312 lb/in2 | 1,440.2029800 lb/in2 | 1,454.8989288 lb/in2 | 1,469.5948776 lb/in2 |
The standard atmosphere (symbol: atm) is a unit of pressure defined as 101325 Pa (1.01325 bar). It is sometimes used as a reference or standard pressure.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
atmosphere | atm | ≡ 101325 Pa | Metric system SI |
atmospheres | pound per (square inch) | atmospheres | pound per (square inch) |
---|---|---|---|
1 | = 14.695948775513 | 6 | = 88.175692653081 |
2 | = 29.391897551027 | 7 | = 102.87164142859 |
3 | = 44.08784632654 | 8 | = 117.56759020411 |
4 | = 58.783795102054 | 9 | = 132.26353897962 |
5 | = 73.479743877567 | 10 | = 146.95948775513 |
The pound per square inch or, more accurately, pound-force per square inch (symbol: lbf/in2; abbreviation: psi) is a unit of pressure or of stress based on avoirdupois units.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
pound per (square inch) | lb/in2 | ≡ 1 pound × ɡ0 / 1 sq in | = 6 894.75729 pascals | Imperial/US |
pound per (square inch) | atmospheres | pound per (square inch) | atmospheres |
---|---|---|---|
1 | = 0.068045963909878 | 6 | = 0.40827578345927 |
2 | = 0.13609192781976 | 7 | = 0.47632174736914 |
3 | = 0.20413789172963 | 8 | = 0.54436771127902 |
4 | = 0.27218385563951 | 9 | = 0.6124136751889 |
5 | = 0.34022981954939 | 10 | = 0.68045963909878 |
atmospheres | pound per (square inch) |
---|---|
1 | = 14.6959488 |
0.0680460 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |