Inches per Year to Micrometres per Year (ipy to µm/y)
1 inch per year (ipy) = 25400 micrometres per year (µm/y). 1 µm/y = 0.00003937007874 ipy. Example: 15 ipy = 15 × 25400 = 381000 µm/y.
Also searched as inches per year to µm/y, inches per year in µm/y, inches per year into micrometres per year, ipy to µm/y, ipy in micrometres per year, ipy into micrometre per year, inch per year to micrometre per year, ipy to micrometres per year converter, inches per year to micrometers per year and how many micrometres per year in an inch per year.
1 ipy = 25400 µm/y
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk inch per year to micrometre per year converter to paste a column from Excel.
How to Convert Inch per Year to Micrometre per Year
- 1 ipy = 25400 µm/y
- 1 µm/y = 0.00003937007874 ipy
- Example: convert 15 ipy to µm/y: 15 ipy = 15 × 25400 µm/y = 381000 µm/y
Formula
µm/y = ipy × 25400
Derivation from SI units:
- 1 ipy = 25.4 mm/y = 1000 mpy (exact)
- 1 µm/y = 0.001 mm/y
- 1 ipy = 25.4 mm/y ÷ 0.001 mm/y per µm/y = 25400 µm/y
Both units are defined exactly, so the factor is exact. Inch per Year definition: inch per year; Micrometre per Year definition: micrometre per year.
Worked examples
- A reading of 0.002 ipy converts to 50.8 µm/y.
0.002 ipy × 25400 = 50.8 µm/y - A value of 0.02 ipy is 508 µm/y.
0.02 ipy × 25400 = 508 µm/y
Inch per Year to Micrometre per Year conversion table
| Inches per Year (ipy) | Micrometres per Year (µm/y) |
|---|---|
| 0.0001 ipy | 2.54 µm/y |
| 0.0005 ipy | 12.7 µm/y |
| 0.001 ipy | 25.4 µm/y |
| 0.002 ipy | 50.8 µm/y |
| 0.005 ipy | 127 µm/y |
| 0.01 ipy | 254 µm/y |
| 0.02 ipy | 508 µm/y |
| 0.05 ipy | 1270 µm/y |
| 0.1 ipy | 2540 µm/y |
| 0.5 ipy | 12700 µm/y |
Where it's used
Inches per Year are used for older corrosion resistance tables, while micrometres per year appear in atmospheric corrosion and galvanised coating life. Both measure corrosion rate (thickness loss per year), so the conversion is a fixed factor.
Inch per Year to other corrosion rate units
| Conversion | 1 ipy equals |
|---|---|
| inch per year to micrometre per year | 25400 µm/y |
| inch per year to millimetre per year | 25.4 mm/y |
| inch per year to mil per year | 1000 mpy |
Frequently asked questions
How many micrometres per year are in 1 inch per year?
1 ipy = 25400 µm/y.
How do I convert inches per year to micrometres per year?
Multiply the value in ipy by 25400. For example, 15 ipy × 25400 = 381000 µm/y.
Is the ipy to µm/y conversion exact?
Yes. Both units are defined exactly, and 1 ipy is exactly 25400 µm/y.
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".
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology .
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). Inches per Year to Micrometres per Year (ipy to µm/y). Retrieved October 25, 2026, from https://scientificconverters.com/corrosion-rate/inches-per-year-to-micrometers-per-year/
IEEE
Scientific Converters, "Inches per Year to Micrometres per Year (ipy to µm/y)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/corrosion-rate/inches-per-year-to-micrometers-per-year/