Pascals to Inches of Water (Pa → inH₂O)
Formula
1 Pa = 0.00401474213311279 inH₂OConversion Table
| Pa | inH₂O |
|---|---|
| 0 | 0 |
| 1.0000 | 0.0040147 |
| 2.0000 | 0.0080295 |
| 3.0000 | 0.012044 |
| 4.0000 | 0.016059 |
| 5.0000 | 0.020074 |
| 6.0000 | 0.024088 |
| 7.0000 | 0.028103 |
| 8.0000 | 0.032118 |
| 9.0000 | 0.036133 |
| 10.000 | 0.040147 |
| 11.000 | 0.044162 |
| 12.000 | 0.048177 |
| 13.000 | 0.052192 |
| 14.000 | 0.056206 |
| 15.000 | 0.060221 |
| 16.000 | 0.064236 |
| 17.000 | 0.068251 |
| 18.000 | 0.072265 |
| 19.000 | 0.076280 |
| Pa | inH₂O |
|---|---|
| 20.000 | 0.080295 |
| 21.000 | 0.084310 |
| 22.000 | 0.088324 |
| 23.000 | 0.092339 |
| 24.000 | 0.096354 |
| 25.000 | 0.10037 |
| 26.000 | 0.10438 |
| 27.000 | 0.10840 |
| 28.000 | 0.11241 |
| 29.000 | 0.11643 |
| 30.000 | 0.12044 |
| 31.000 | 0.12446 |
| 32.000 | 0.12847 |
| 33.000 | 0.13249 |
| 34.000 | 0.13650 |
| 35.000 | 0.14052 |
| 36.000 | 0.14453 |
| 37.000 | 0.14855 |
| 38.000 | 0.15256 |
| 39.000 | 0.15657 |
| Pa | inH₂O |
|---|---|
| 40.000 | 0.16059 |
| 41.000 | 0.16460 |
| 42.000 | 0.16862 |
| 43.000 | 0.17263 |
| 44.000 | 0.17665 |
| 45.000 | 0.18066 |
| 46.000 | 0.18468 |
| 47.000 | 0.18869 |
| 48.000 | 0.19271 |
| 49.000 | 0.19672 |
| 50.000 | 0.20074 |
| 51.000 | 0.20475 |
| 52.000 | 0.20877 |
| 53.000 | 0.21278 |
| 54.000 | 0.21680 |
| 55.000 | 0.22081 |
| 56.000 | 0.22483 |
| 57.000 | 0.22884 |
| 58.000 | 0.23286 |
| 59.000 | 0.23687 |
| Pa | inH₂O |
|---|---|
| 60.000 | 0.24088 |
| 61.000 | 0.24490 |
| 62.000 | 0.24891 |
| 63.000 | 0.25293 |
| 64.000 | 0.25694 |
| 65.000 | 0.26096 |
| 66.000 | 0.26497 |
| 67.000 | 0.26899 |
| 68.000 | 0.27300 |
| 69.000 | 0.27702 |
| 70.000 | 0.28103 |
| 71.000 | 0.28505 |
| 72.000 | 0.28906 |
| 73.000 | 0.29308 |
| 74.000 | 0.29709 |
| 75.000 | 0.30111 |
| 76.000 | 0.30512 |
| 77.000 | 0.30914 |
| 78.000 | 0.31315 |
| 79.000 | 0.31716 |
Pascals to Inches of Water Conversion
Converting Pascals (Pa) to Inches of Water (inH₂O) is a common pressure conversion. 1 Pa equals 0.004015 inH₂O. For example, 100 Pa is equal to 0.401474 inH₂O.
Quick Mental Math: Pascals to Inches of Water
Divide pascals by approximately 249.09 to convert to inches-of-water.
Why is converting Pascals to Inches of Water tricky?
The non-integer divisor 249.09 requires careful mental arithmetic.
Quick Reference Values
1 Pa = 0.004015 inH₂O. 5 Pa = 0.020074 inH₂O. 10 Pa = 0.040147 inH₂O. 25 Pa = 0.100369 inH₂O. 50 Pa = 0.200737 inH₂O. 100 Pa = 0.401474 inH₂O.
What is Pascals?
Pascals (Pa) is a unit of pressure. The pascal (Pa) is the SI derived unit of pressure, defined as one newton per square meter (1 Pa = 1 N/m²). It quantifies force applied evenly over an area and is expressed as kg·m⁻¹·s⁻² in base SI units [bipm-si-brochure]. Named after Blaise Pascal, the pascal was adopted by BIPM in 1971 to replace older pressure units and standardize measurement in the SI system. It reflects the link between force and area in pressure measurements [bipm-si-brochure]. Pascals are the standard pressure unit in scientific research, meteorology, and engineering globally. Countries following SI, including members of ISO and NIST guidelines, use pascals for atmospheric and mechanical pressure [nist-si-guide].
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: pascal, pascals, pascel, pascall, pasceles, inch of water, inch-water, in h2o, inch h20. All of these refer to the Pascals to Inches of Water conversion.