Inch (in) to Millimeter (mm) Conversion
Convert inch (in) to millimeter (mm) with precision. Enter values and get instant conversions.
Length Converter
1 Inch (in) = 0 Millimeter (mm)
Common Conversions
About Inch (in) to Millimeter (mm) Conversion
Converting from Inch (in) to Millimeter (mm) is a common length conversion.
This online converter allows you to easily convert between inch (in) and millimeter (mm), providing instant results with high precision.
Inch (in)
Definition: An inch (symbol: in) is 1/12 of a foot or exactly 25.4 millimeters. It is deeply embedded in US manufacturing and daily life.
History: Derived from the Latin 'uncia' (1/12 of a Roman foot). Standardized internationally in 1959 to 25.4 mm, resolving variations between US and UK inches.
Current use: Prevails in US screen sizes (TVs, monitors), plumbing (pipe diameters), and tool calibration (e.g., wrench sizes). The UK uses inches informally for screen sizes and height.
Millimeter (mm)
Definition: A millimeter (symbol: mm) is one-thousandth of a meter (0.001 m). It enables precise measurements in engineering, manufacturing, and scientific research.
History: Standardized in the 19th century alongside the meter, its utility grew with industrialization, where exact measurements became critical for machinery and interchangeable parts.
Current use: Essential in mechanical engineering (tolerances), meteorology (rainfall), and medicine (stent diameters). Also used in jewelry (gemstone sizes) and paper thickness (e.g., 120gsm paper ≈ 0.16 mm).
Details
- From: Inch (in)
- To: Millimeter (mm)
- Formula: 1 in = 25.4000000000 mm
- Example: 25 in = 635.0000000000 mm
Inch (in) to Millimeter (mm) Conversion Table
| Inch (in) | Millimeter (mm) |
|---|---|
| 0.01 | 0.254 |
| 0.1 | 2.54 |
| 1 | 25.4 |
| 2 | 50.8 |
| 3 | 76.2 |
| 5 | 127 |
| 10 | 254 |
| 20 | 508 |
| 50 | 1270 |
| 100 | 2540 |
| 1000 | 25400 |