Inches of Water to Megapascals (inH₂O → MPa)
Formula
1 inH₂O = 0.00024908199999999997 MPaConversion Table
| inH₂O | MPa |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00024908 |
| 2.0000 | 0.00049816 |
| 3.0000 | 0.00074725 |
| 4.0000 | 0.00099633 |
| 5.0000 | 0.0012454 |
| 6.0000 | 0.0014945 |
| 7.0000 | 0.0017436 |
| 8.0000 | 0.0019927 |
| 9.0000 | 0.0022417 |
| 10.000 | 0.0024908 |
| 11.000 | 0.0027399 |
| 12.000 | 0.0029890 |
| 13.000 | 0.0032381 |
| 14.000 | 0.0034871 |
| 15.000 | 0.0037362 |
| 16.000 | 0.0039853 |
| 17.000 | 0.0042344 |
| 18.000 | 0.0044835 |
| 19.000 | 0.0047326 |
| inH₂O | MPa |
|---|---|
| 20.000 | 0.0049816 |
| 21.000 | 0.0052307 |
| 22.000 | 0.0054798 |
| 23.000 | 0.0057289 |
| 24.000 | 0.0059780 |
| 25.000 | 0.0062271 |
| 26.000 | 0.0064761 |
| 27.000 | 0.0067252 |
| 28.000 | 0.0069743 |
| 29.000 | 0.0072234 |
| 30.000 | 0.0074725 |
| 31.000 | 0.0077215 |
| 32.000 | 0.0079706 |
| 33.000 | 0.0082197 |
| 34.000 | 0.0084688 |
| 35.000 | 0.0087179 |
| 36.000 | 0.0089670 |
| 37.000 | 0.0092160 |
| 38.000 | 0.0094651 |
| 39.000 | 0.0097142 |
| inH₂O | MPa |
|---|---|
| 40.000 | 0.0099633 |
| 41.000 | 0.010212 |
| 42.000 | 0.010461 |
| 43.000 | 0.010711 |
| 44.000 | 0.010960 |
| 45.000 | 0.011209 |
| 46.000 | 0.011458 |
| 47.000 | 0.011707 |
| 48.000 | 0.011956 |
| 49.000 | 0.012205 |
| 50.000 | 0.012454 |
| 51.000 | 0.012703 |
| 52.000 | 0.012952 |
| 53.000 | 0.013201 |
| 54.000 | 0.013450 |
| 55.000 | 0.013700 |
| 56.000 | 0.013949 |
| 57.000 | 0.014198 |
| 58.000 | 0.014447 |
| 59.000 | 0.014696 |
| inH₂O | MPa |
|---|---|
| 60.000 | 0.014945 |
| 61.000 | 0.015194 |
| 62.000 | 0.015443 |
| 63.000 | 0.015692 |
| 64.000 | 0.015941 |
| 65.000 | 0.016190 |
| 66.000 | 0.016439 |
| 67.000 | 0.016688 |
| 68.000 | 0.016938 |
| 69.000 | 0.017187 |
| 70.000 | 0.017436 |
| 71.000 | 0.017685 |
| 72.000 | 0.017934 |
| 73.000 | 0.018183 |
| 74.000 | 0.018432 |
| 75.000 | 0.018681 |
| 76.000 | 0.018930 |
| 77.000 | 0.019179 |
| 78.000 | 0.019428 |
| 79.000 | 0.019677 |
Inches of Water to Megapascals Conversion
Converting Inches of Water (inH₂O) to Megapascals (MPa) is a common pressure conversion. 1 inH₂O equals 0.000249 MPa. For example, 100 inH₂O is equal to 0.024908 MPa.
Quick Reference Values
1 inH₂O = 0.000249 MPa. 5 inH₂O = 0.001245 MPa. 10 inH₂O = 0.002491 MPa. 25 inH₂O = 0.006227 MPa. 50 inH₂O = 0.012454 MPa. 100 inH₂O = 0.024908 MPa.
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].
What is Megapascals?
Megapascals (MPa) is a unit of pressure. The megapascal (MPa) equals one million pascals (Pa), the SI derived unit for pressure. It measures force per unit area, with 1 MPa equaling 1,000,000 N/m². The pascal is defined by the BIPM as one newton per square meter, making the megapascal a standard for high-pressure measurements in engineering and materials science[bipm-si-brochure]. The pascal unit was adopted by the CGPM in 1971, named after Blaise Pascal to honor his work in hydrostatics. The megapascal as a multiple of the pascal emerged with the widespread use of the SI system to quantify large pressure values in the 20th century[bipm-si-brochure]. Megapascals are widely used globally in engineering, construction, and materials testing. Countries adopting the metric system, including those in Europe and Asia, rely on MPa for tensile strength and pressure measurements. The ISO 80000 standard references MPa for expressing pressure in technical documentation[iso-80000].
Common Misspellings
People often search for this conversion using these alternate spellings: inch of water, inch-water, in h2o, inch h20, mega pascal, megapascel, megapascal, megapascall, megapascal. All of these refer to the Inches of Water to Megapascals conversion.