inH2O to Pascal Converter
Pressure · unit-converter
Convert inH2O to Pascal 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 inH2O
Inches of water column (inH2O) is common in low-pressure HVAC and duct static-pressure measurements.
About Pascal
The pascal (Pa) is the SI unit of pressure (one newton per square meter). It is the common reference for scientific and engineering work.
How to convert inch of water (inh2o, 4 °c) to pascal
1 inh2o equals 249.08891 pascal in this tool (via pascal):
1 inh2o = (249.08891 Pa ÷ 1 Pa) pa = 249.08891 pa
Each inh2o carries 249.08891 Pa and each pascal 1 Pa, so one inh2o equals 249.08891 ÷ 1 pa.
Let p(inh2o) be pressure in inH2O (inh2o), and p(pa) in Pascal (pa). Then:
p(pa) = p(inh2o) × (249.08891 / 1)
Equivalently, divide by how many inh2o fit into one pa (Pa per pa divided by Pa per inh2o):
p(pa) = p(inh2o) ÷ 0.004014630759755623
Examples
Example #1: Convert 1 inh2o to pascal
1 inh2o = 1 inh2o × (249.08891/1) pa = 249.08891 pa
1 inh2o = 1 inh2o ÷ 0.004014630759755623 = 249.08891 pa
1 inh2o × (249.08891/1) = 249.088910 pa
Example #2: Convert 10 inh2o to pascal
10 inh2o = 10 inh2o × (249.08891/1) pa = 2490.8891 pa
10 inh2o = 10 inh2o ÷ 0.004014630759755623 = 2490.8891 pa
10 inh2o × (249.08891/1) = 2,490.889100 pa
Summary
To convert inH2O to Pascal, multiply the value in inh2o by (249.08891 Pa per inh2o) / (1 Pa per pa). Equivalently: value_pa = value_inh2o × (249.08891 / 1). Numerically, 1 inh2o equals 249.08891 pa.
Relationship context
Both inH2O and Pascal are converted by fixed multiples of the pascal. Multiplying by (Pa per inh2o) ÷ (Pa per pa) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| inH2O (inh2o) | Pascal (pa) |
|---|---|
| 0.1 | 24.908891 |
| 1 | 249.08891 |
| 2 | 498.17782 |
| 3 | 747.26673 |
| 4 | 996.35564 |
| 5 | 1,245.44455 |
| 6 | 1,494.53346 |
| 7 | 1,743.62237 |
| 8 | 1,992.71128 |
| 9 | 2,241.80019 |
| inH2O (inh2o) | Pascal (pa) |
|---|---|
| 10 | 2,490.8891 |
| 20 | 4,981.7782 |
| 30 | 7,472.6673 |
| 40 | 9,963.5564 |
| 50 | 12,454.4455 |
| 60 | 14,945.3346 |
| 70 | 17,436.2237 |
| 80 | 19,927.1128 |
| 90 | 22,418.0019 |
| 100 | 24,908.891 |