How Many Millimeters in an Inch?
快速解答
There are 25.4 millimeters in an inch.
1 inch = 25.4 millimeters
理解转换
By international agreement since 1959, one inch is defined as exactly 25.4 millimeters. This exact relationship makes converting between imperial and metric length units straightforward and is fundamental to engineering and manufacturing.
公式
1 inch = 25.4 millimeters
常见示例
| 描述 | 值 |
|---|---|
| A 1/4-inch drill bit | 6.35 mm |
| A 1/2-inch bolt | 12.7 mm |
| A 3/8-inch wrench | 9.525 mm |
快速参考表
使用此表在inch和millimeters之间快速转换：
| inch | millimeters |
|---|---|
| 1 | 25.4 |
| 2 | 50.8 |
| 5 | 127 |
| 10 | 254 |
| 25 | 635 |
| 50 | 1,270 |
| 100 | 2,540 |
常见问题
How Many Millimeters in an Inch?
There are 25.4 millimeters in an inch. By international agreement since 1959, one inch is defined as exactly 25.4 millimeters. This exact relationship makes converting between imperial and metric length units straightforward and is fundamental to engineering and manufacturing.
将inch转换为millimeters的公式是什么？
公式为：1 inch = 25.4 millimeters。要转换，将inch的数量乘以25.4即可得到millimeters的等值。
如何将millimeters转换为inch？
要将millimeters转换为inch，将{fromUnit}的数量除以25.4。例如，127 {fromUnit}等于5 {toUnit}。