1 英寸水柱（inH₂O）等于 0.0735559057 inHg，1 英寸汞柱（inHg）等于 13.5951014 inH₂O。
| 英寸水柱 | 英寸汞柱 |
|---|---|
| 0.01 inH₂O | 0.000735559057 inHg |
| 0.1 inH₂O | 0.00735559057 inHg |
| 1 inH₂O | 0.0735559057 inHg |
| 2 inH₂O | 0.147111811 inHg |
| 3 inH₂O | 0.220667717 inHg |
| 4 inH₂O | 0.294223623 inHg |
| 5 inH₂O | 0.367779529 inHg |
| 6 inH₂O | 0.441335434 inHg |
| 7 inH₂O | 0.51489134 inHg |
| 8 inH₂O | 0.588447246 inHg |
| 9 inH₂O | 0.662003151 inHg |
| 10 inH₂O | 0.735559057 inHg |
| 20 inH₂O | 1.47111811 inHg |
| 30 inH₂O | 2.20667717 inHg |
| 40 inH₂O | 2.94223623 inHg |
| 50 inH₂O | 3.67779529 inHg |
| 60 inH₂O | 4.41335434 inHg |
| 70 inH₂O | 5.1489134 inHg |
| 80 inH₂O | 5.88447246 inHg |
| 90 inH₂O | 6.62003151 inHg |
| 100 inH₂O | 7.35559057 inHg |
| 200 inH₂O | 14.7111811 inHg |
| 300 inH₂O | 22.0667717 inHg |
| 500 inH₂O | 36.7779529 inHg |
| 1,000 inH₂O | 73.5559057 inHg |
| 10,000 inH₂O | 735.559057 inHg |
| 帕斯卡 | 249.08891 Pa |
| 百帕 | 2.4908891 hPa |
| 千帕 | 0.24908891 kPa |
| 兆帕 | 0.00024908891 MPa |
| 吉帕 | 0.00000024908891 GPa |
| 巴 | 0.0024908891 bar |
| 毫巴 | 2.4908891 mbar |
| 磅/平方英寸 | 0.036127292 psi |
| 千磅/平方英寸 | 0.000036127292 ksi |
| 磅/平方英尺 | 5.20233005 psf |
| 千克力/平方厘米 | 0.00254 kgf/cm² |
| 标准大气压 | 0.00245831641 atm |
| 托 | 1.86832047 Torr |
| 毫米汞柱 | 1.8683202 mmHg |
| 英寸汞柱 | 0.0735559057 inHg |
| 毫米水柱 | 25.4 mmH₂O |
| 英寸水柱 | 1 inH₂O |
| 帕斯卡 | 3,386.389 Pa |
| 百帕 | 33.86389 hPa |
| 千帕 | 3.386389 kPa |
| 兆帕 | 0.003386389 MPa |
| 吉帕 | 0.000003386389 GPa |
| 巴 | 0.03386389 bar |
| 毫巴 | 33.86389 mbar |
| 磅/平方英寸 | 0.4911542 psi |
| 千磅/平方英寸 | 0.0004911542 ksi |
| 磅/平方英尺 | 70.7262047 psf |
| 千克力/平方厘米 | 0.0345315577 kgf/cm² |
| 标准大气压 | 0.0334210609 atm |
| 托 | 25.4000063 Torr |
| 毫米汞柱 | 25.4000027 mmHg |
| 英寸汞柱 | 1 inHg |
| 毫米水柱 | 345.315577 mmH₂O |
| 英寸水柱 | 13.5951014 inH₂O |