Bars to Inches of Water (bar → inH₂O)
Formula
1 bar = 401.474213311279 inH₂OConversion Table
| bar | inH₂O |
|---|---|
| 0 | 0 |
| 1.0000 | 401.47 |
| 2.0000 | 802.95 |
| 3.0000 | 1,204.4 |
| 4.0000 | 1,605.9 |
| 5.0000 | 2,007.4 |
| 6.0000 | 2,408.8 |
| 7.0000 | 2,810.3 |
| 8.0000 | 3,211.8 |
| 9.0000 | 3,613.3 |
| 10.000 | 4,014.7 |
| 11.000 | 4,416.2 |
| 12.000 | 4,817.7 |
| 13.000 | 5,219.2 |
| 14.000 | 5,620.6 |
| 15.000 | 6,022.1 |
| 16.000 | 6,423.6 |
| 17.000 | 6,825.1 |
| 18.000 | 7,226.5 |
| 19.000 | 7,628.0 |
| bar | inH₂O |
|---|---|
| 20.000 | 8,029.5 |
| 21.000 | 8,431.0 |
| 22.000 | 8,832.4 |
| 23.000 | 9,233.9 |
| 24.000 | 9,635.4 |
| 25.000 | 10,037 |
| 26.000 | 10,438 |
| 27.000 | 10,840 |
| 28.000 | 11,241 |
| 29.000 | 11,643 |
| 30.000 | 12,044 |
| 31.000 | 12,446 |
| 32.000 | 12,847 |
| 33.000 | 13,249 |
| 34.000 | 13,650 |
| 35.000 | 14,052 |
| 36.000 | 14,453 |
| 37.000 | 14,855 |
| 38.000 | 15,256 |
| 39.000 | 15,657 |
| bar | inH₂O |
|---|---|
| 40.000 | 16,059 |
| 41.000 | 16,460 |
| 42.000 | 16,862 |
| 43.000 | 17,263 |
| 44.000 | 17,665 |
| 45.000 | 18,066 |
| 46.000 | 18,468 |
| 47.000 | 18,869 |
| 48.000 | 19,271 |
| 49.000 | 19,672 |
| 50.000 | 20,074 |
| 51.000 | 20,475 |
| 52.000 | 20,877 |
| 53.000 | 21,278 |
| 54.000 | 21,680 |
| 55.000 | 22,081 |
| 56.000 | 22,483 |
| 57.000 | 22,884 |
| 58.000 | 23,286 |
| 59.000 | 23,687 |
| bar | inH₂O |
|---|---|
| 60.000 | 24,088 |
| 61.000 | 24,490 |
| 62.000 | 24,891 |
| 63.000 | 25,293 |
| 64.000 | 25,694 |
| 65.000 | 26,096 |
| 66.000 | 26,497 |
| 67.000 | 26,899 |
| 68.000 | 27,300 |
| 69.000 | 27,702 |
| 70.000 | 28,103 |
| 71.000 | 28,505 |
| 72.000 | 28,906 |
| 73.000 | 29,308 |
| 74.000 | 29,709 |
| 75.000 | 30,111 |
| 76.000 | 30,512 |
| 77.000 | 30,914 |
| 78.000 | 31,315 |
| 79.000 | 31,716 |
Bars to Inches of Water Conversion
Converting Bars (bar) to Inches of Water (inH₂O) is a common pressure conversion. 1 bar equals 401.474213 inH₂O. For example, 100 bar is equal to 40,147.421331 inH₂O.
Quick Reference Values
1 bar = 401.474213 inH₂O. 5 bar = 2,007.371067 inH₂O. 10 bar = 4,014.742133 inH₂O. 25 bar = 10,036.855333 inH₂O. 50 bar = 20,073.710666 inH₂O. 100 bar = 40,147.421331 inH₂O.
What is Bars?
Bars (bar) is a unit of pressure. The bar is a unit of pressure equal to exactly 100,000 pascals (Pa). It is used to measure pressure or stress and is slightly less than the standard atmospheric pressure of 101,325 Pa. The bar is not an SI unit but is accepted for use with SI by the BIPM due to its convenience in many engineering fields [bipm-si-brochure]. The bar was introduced by the Norwegian meteorologist Vilhelm Bjerknes in 1909 to simplify atmospheric pressure measurements. It gained wider recognition in the mid-20th century and was formally accepted for use with the SI by the BIPM to provide a practical unit for pressure [bipm-si-brochure]. The bar is widely used in meteorology, engineering, and automotive industries worldwide, especially in Europe and Asia. It remains common in barometric pressure readings and tire pressure specifications, although the pascal is the SI base unit [bipm-si-brochure].
What is Inches of Water?
Inches of Water (inH₂O) is a unit of pressure. Inches of water measure pressure as the height in inches of a water column. One inch of water equals 249.0889 pascals (Pa) at 4 °C. This unit is widely used to measure low-pressure differentials in HVAC and fluid systems [nist-si-guide]. The use of water columns for pressure measurement dates to early fluid mechanics studies. The inch unit was adopted in English-speaking countries for practical low-pressure measurement. It remains standardized for building and industrial applications [nist-si-guide]. Inches of water are used primarily in the United States for HVAC duct pressures, gas pressure measurements, and cleanroom environments. Other countries often use pascals or millimeters of water but recognize inH2O in specific sectors [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: barres, barre, bars pressure, inch of water, inch-water, in h2o, inch h20. All of these refer to the Bars to Inches of Water conversion.