What is 1 inch (US survey) [in] to millimeter [mm]?
The converted value is:1 inch (US survey) [in] = 25.400050800102 millimeter [mm]
Keep reading to learn how to Convert 1 inch (US survey) [in] to millimeter [mm].
What is a US Survey Inch?
The US survey inch (1/39.37 meter ≈ 2.540005 cm) was slightly longer than the international inch (2.54 cm). Used in all American engineering drawings until 2023, its difference caused measurable discrepancies in large-scale projects.
What is a Millimeter (mm)?
The millimeter (mm) equals one-thousandth of a meter. It is commonly used for precision measurements in engineering, manufacturing, and construction.
How to Convert 1 inch (US survey) [in] to millimeter [mm]
Use this conversion formula:
output = input × 25.4000508001 + (0)
1 inch (US survey) [in] = 25.4000508001 millimeter [mm]
You can convert other values to millimeter [mm] using the converter below, which is built on our: inch (US survey) [in] to millimeter [mm] converter