Inch of Water to Atmosphere Converter
EngineeringPascals, bar, psi and more.
How to convert Inch of Water to Atmosphere
Multiply the inch of water value by 0.00245832: 1 inH₂O = 0.00245832 atm. Going the other way, 1 atm = 406.782 inH₂O, so divide by 0.00245832 or use the Atmosphere to Inch of Water converter.
About these units
Inch of Water (inH₂O)
An inch of water is the pressure of a column of water 1 inch high, about 249 pascals. It is used for ventilation ducts and low gas pressures.
Atmosphere (atm)
A standard atmosphere is defined as exactly 101,325 pascals, roughly the average air pressure at sea level. It is about 14.7 psi or 1.013 bar.
Inch of Water to Atmosphere conversion table
| Inch of Water (inH₂O) | Atmosphere (atm) |
|---|---|
| 1 inH₂O | 0.00245832 atm |
| 2 inH₂O | 0.00491663 atm |
| 3 inH₂O | 0.00737495 atm |
| 4 inH₂O | 0.00983327 atm |
| 5 inH₂O | 0.0122916 atm |
| 10 inH₂O | 0.0245832 atm |
| 20 inH₂O | 0.0491663 atm |
| 25 inH₂O | 0.0614579 atm |
| 50 inH₂O | 0.122916 atm |
| 100 inH₂O | 0.245832 atm |
| 500 inH₂O | 1.22916 atm |
| 1,000 inH₂O | 2.45832 atm |
More inch of water conversions
- Inch of Water to Psi1 inH₂O = 0.0361273 psi
- Inch of Water to Ksi1 inH₂O = 3.6127e-5 ksi
- Inch of Water to Inch of Mercury1 inH₂O = 0.0735559 inHg
- Inch of Water to Foot of Water1 inH₂O = 0.0833333 ftH₂O
- Inch of Water to Pascal1 inH₂O = 249.089 Pa
- Inch of Water to Kgf per Sq Cm1 inH₂O = 0.00254 kgf/cm²
- Inch of Water to Exapascal1 inH₂O = 2.4909e-16 EPa
See every unit on the Pressure Converter.