Convert psi to bar and back, with kPa, MPa, kg/cm², atm and metres of water. Type in either box.
| psi | bar | kPa | kg/cm² |
|---|---|---|---|
| 1 | 0.0689 | 6.895 | 0.0703 |
| 5 | 0.3447 | 34.474 | 0.3515 |
| 10 | 0.6895 | 68.948 | 0.7031 |
| 14.7 | 1.014 | 101.35 | 1.034 |
| 15 | 1.034 | 103.42 | 1.055 |
| 20 | 1.379 | 137.9 | 1.406 |
| 25 | 1.724 | 172.37 | 1.758 |
| 30 | 2.068 | 206.84 | 2.109 |
| 35 | 2.413 | 241.32 | 2.461 |
| 40 | 2.758 | 275.79 | 2.812 |
| 45 | 3.103 | 310.26 | 3.164 |
| 50 | 3.447 | 344.74 | 3.515 |
| 60 | 4.137 | 413.69 | 4.218 |
| 65 | 4.482 | 448.16 | 4.57 |
| 75 | 5.171 | 517.11 | 5.273 |
| 80 | 5.516 | 551.58 | 5.625 |
| 90 | 6.205 | 620.53 | 6.328 |
| 100 | 6.895 | 689.48 | 7.031 |
| 110 | 7.584 | 758.42 | 7.734 |
| 120 | 8.274 | 827.37 | 8.437 |
| 125 | 8.618 | 861.84 | 8.788 |
| 150 | 10.342 | 1,034.2 | 10.546 |
| 175 | 12.066 | 1,206.6 | 12.304 |
| 200 | 13.79 | 1,379 | 14.061 |
| 250 | 17.237 | 1,723.7 | 17.577 |
| 300 | 20.684 | 2,068.4 | 21.092 |
| 500 | 34.474 | 3,447.4 | 35.153 |
| 1,000 | 68.948 | 6,894.8 | 70.307 |
| Application | psi | bar |
|---|---|---|
| Minimum pressure at a standard sprinkler (NFPA 13) | 7 | 0.48 |
| Domestic water supply at fixtures (typical) | 40 – 80 | 2.8 – 5.5 |
| Residual pressure at top standpipe outlet (NFPA 14) | 100 | 6.9 |
| Standard fire protection component rating | 175 | 12.1 |
| High-pressure fire system components | 300 | 20.7 |
| R410A condensing pressure at 100 °F | 318 | 21.9 |
Related: bar to psi converter, Sprinkler K-Factor Calculator, Refrigerant PT Chart and Standpipe System Design.
1 psi = 0.0689 bar, so 100 psi is 6.89 bar and 175 psi is 12.07 bar.
Multiply psi by 0.0689476, or divide by 14.5038. For example, 150 psi ÷ 14.5038 = 10.34 bar.
175 psi = 12.07 bar, the standard pressure rating of most fire protection components.
psig is gauge pressure above atmosphere, psia is absolute pressure from vacuum. psia = psig + 14.7 at sea level. Plain "psi" usually means gauge pressure.
30 psi = 2.07 bar.
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