Bar to inH2O Converter
Pressure · unit-converter
Convert Bar to inH2O with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About Bar
The bar is 100,000 Pa. It is convenient for industrial and approximate atmospheric pressures (1 bar ≈ 1 atm).
About inH2O
Inches of water column (inH2O) is common in low-pressure HVAC and duct static-pressure measurements.
How to convert bar to inch of water (inh2o, 4 °c)
1 bar equals 401.4630759755623 inh2o in this tool (via pascal):
1 bar = (100000 Pa ÷ 249.08891 Pa) inh2o = 401.4630759755623 inh2o
Each bar carries 100000 Pa and each inh2o 249.08891 Pa, so one bar equals 100000 ÷ 249.08891 inh2o.
Let p(bar) be pressure in Bar (bar), and p(inh2o) in inH2O (inh2o). Then:
p(inh2o) = p(bar) × (100000 / 249.08891)
Equivalently, divide by how many bar fit into one inh2o (Pa per inh2o divided by Pa per bar):
p(inh2o) = p(bar) ÷ 0.0024908891
Examples
Example #1: Convert 1 bar to inh2o
1 bar = 1 bar × (100000/249.08891) inh2o = 401.463075976 inh2o
1 bar = 1 bar ÷ 0.0024908891 = 401.463075976 inh2o
1 bar × (100,000/249.08891) = 401.463076 inh2o
Example #2: Convert 10 bar to inh2o
10 bar = 10 bar × (100000/249.08891) inh2o = 4014.63075976 inh2o
10 bar = 10 bar ÷ 0.0024908891 = 4014.63075976 inh2o
10 bar × (100,000/249.08891) = 4,014.630760 inh2o
Summary
To convert Bar to inH2O, multiply the value in bar by (100000 Pa per bar) / (249.08891 Pa per inh2o). Equivalently: value_inh2o = value_bar × (100000 / 249.08891). Numerically, 1 bar equals 401.4630759755623 inh2o.
Relationship context
Both Bar and inH2O are converted by fixed multiples of the pascal. Multiplying by (Pa per bar) ÷ (Pa per inh2o) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| Bar (bar) | inH2O (inh2o) |
|---|---|
| 0.1 | 40.1463075976 |
| 1 | 401.463075976 |
| 2 | 802.926151951 |
| 3 | 1,204.38922793 |
| 4 | 1,605.8523039 |
| 5 | 2,007.31537988 |
| 6 | 2,408.77845585 |
| 7 | 2,810.24153183 |
| 8 | 3,211.7046078 |
| 9 | 3,613.16768378 |
| Bar (bar) | inH2O (inh2o) |
|---|---|
| 10 | 4,014.63075976 |
| 20 | 8,029.26151951 |
| 30 | 12,043.8922793 |
| 40 | 16,058.523039 |
| 50 | 20,073.1537988 |
| 60 | 24,087.7845585 |
| 70 | 28,102.4153183 |
| 80 | 32,117.046078 |
| 90 | 36,131.6768378 |
| 100 | 40,146.3075976 |