Convert Inches of Water (60 °F) to N/mm²
1 inch of water (60 °F) (inH₂O (60 °F)) = 0.00024884 newtons per square millimetre (N/mm²). 1 N/mm² = 4018.64652 inH₂O (60 °F). Example: 15 inH₂O (60 °F) = 15 × 0.00024884 = 0.0037326 N/mm².
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1 inH₂O (60 °F) = 0.00024884 N/mm²
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk inch of water (60 °F) to newton per square millimetre converter to paste a column from Excel.
How to Convert Inch of Water (60 °F) to Newton per Square Millimetre
- 1 inH₂O (60 °F) = 0.00024884 N/mm²
- 1 N/mm² = 4018.64652 inH₂O (60 °F)
- Example: convert 15 inH₂O (60 °F) to N/mm²: 15 inH₂O (60 °F) = 15 × 0.00024884 N/mm² = 0.0037326 N/mm²
Reference conditions. inH₂O (60 °F): Water at 60 °F (15.6 °C), density ≈ 999.0 kg/m³, standard gravity. NIST value, 5 significant figures.
Formula
N/mm² = inH₂O (60 °F) × 0.00024884
or N/mm² = inH₂O (60 °F) ÷ 4018.646519852
Derivation from SI units:
- 1 inH₂O (60 °F) ≈ 999.0 kg/m³ × 9.80665 m/s² × 0.0254 m ≈ 248.84 Pa
- 1 N/mm² = 1 N ÷ 10⁻⁶ m² = 10⁶ Pa = 1 MPa
- 1 inH₂O (60 °F) = 248.84 Pa ÷ 1000000 Pa per N/mm² = 0.00024884 N/mm²
One unit is a measured value, so the factor is approximate. Inch of Water (60 °F) definition: inch of water (60 °F); Newton per Square Millimetre definition: newton per square millimetre.
Worked examples
- A reading of 0.5 inH₂O (60 °F) converts to 0.00012442 N/mm².
0.5 inH₂O (60 °F) × 0.00024884 = 0.00012442 N/mm² - A value of 7 inH₂O (60 °F) is 0.00174188 N/mm².
7 inH₂O (60 °F) × 0.00024884 = 0.00174188 N/mm²
Inch of Water (60 °F) to Newton per Square Millimetre conversion table
| Inches of Water (60 °F) (inH₂O (60 °F)) | Newtons per Square Millimetre (N/mm²) |
|---|---|
| 0.01 inH₂O (60 °F) | 0.0000024884 N/mm² |
| 0.05 inH₂O (60 °F) | 0.000012442 N/mm² |
| 0.1 inH₂O (60 °F) | 0.000024884 N/mm² |
| 0.25 inH₂O (60 °F) | 0.00006221 N/mm² |
| 0.5 inH₂O (60 °F) | 0.00012442 N/mm² |
| 1 inH₂O (60 °F) | 0.00024884 N/mm² |
| 2 inH₂O (60 °F) | 0.00049768 N/mm² |
| 3 inH₂O (60 °F) | 0.00074652 N/mm² |
| 5 inH₂O (60 °F) | 0.0012442 N/mm² |
| 7 inH₂O (60 °F) | 0.00174188 N/mm² |
| 10 inH₂O (60 °F) | 0.0024884 N/mm² |
| 14 inH₂O (60 °F) | 0.00348376 N/mm² |
| 20 inH₂O (60 °F) | 0.0049768 N/mm² |
| 27.7 inH₂O (60 °F) | 0.006892868 N/mm² |
Where it's used
Inches of Water (60 °F) are used for older US gas-industry and flow-meter references, while newtons per square millimetre appear in steel yield and tensile strength (S355: 355 N/mm²). Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.
Inch of Water (60 °F) to other pressure units
| Conversion | 1 inH₂O (60 °F) equals |
|---|---|
| inch of water (60 °F) to newton per square millimetre | 0.00024884 N/mm² |
| inch of water (60 °F) to pascal | 248.84 Pa |
| inch of water (60 °F) to kilopascal | 0.24884 kPa |
| inch of water (60 °F) to ksi | 0.00003609119066 ksi |
| inch of water (60 °F) to kilogram-force per square centimetre | 0.002537461824 kgf/cm² |
| inch of water (60 °F) to psi | 0.03609119066 psi |
| inch of water (60 °F) to bar | 0.0024884 bar |
| inch of water (60 °F) to millimeter of mercury | 1.866453225 mmHg |
Show 12 more units
| inch of water (60 °F) to inch of water | 0.9990007183 inH₂O |
|---|---|
| inch of water (60 °F) to atmosphere | 0.002455859857 atm |
| inch of water (60 °F) to megapascal | 0.00024884 MPa |
| inch of water (60 °F) to gigapascal | 2.4884 × 10⁻⁷ GPa |
| inch of water (60 °F) to kilogram-force per square millimetre | 0.00002537461824 kgf/mm² |
| inch of water (60 °F) to millibar | 2.4884 mbar |
| inch of water (60 °F) to torr | 1.866453491 Torr |
| inch of water (60 °F) to millimeter of water | 25.37461824 mmH₂O |
| inch of water (60 °F) to centimeter of water | 2.537461824 cmH₂O |
| inch of water (60 °F) to inch of mercury | 0.07348241045 inHg |
| inch of water (60 °F) to decibar | 0.024884 dbar |
| inch of water (60 °F) to barye | 2488.4 Ba |
Frequently asked questions
How many newtons per square millimetre are in 1 inch of water (60 °F)?
1 inH₂O (60 °F) = 0.00024884 N/mm².
How do I convert inches of water (60 °F) to newtons per square millimetre?
Multiply the value in inH₂O (60 °F) by 0.00024884, or divide it by 4018.64652. For example, 15 inH₂O (60 °F) × 0.00024884 = 0.0037326 N/mm².
Is the inH₂O (60 °F) to N/mm² conversion exact?
Not exactly. The inch of water (60 °F) is a measured value (Water at 60 °F (15.6 °C), density ≈ 999.0 kg/m³, standard gravity. NIST value, 5 significant figures.). Results are good to about 5 significant figures.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "inch of water (60 °F)".
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units with special names.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Inches of Water (60 °F) to N/mm². Retrieved October 25, 2026, from https://scientificconverters.com/pressure/inch-of-water-60f-to-newton-per-square-millimeter/
IEEE
Scientific Converters, "Convert Inches of Water (60 °F) to N/mm²," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/pressure/inch-of-water-60f-to-newton-per-square-millimeter/