Convert millimeters to inches
Accurate tool to convert between mm and in
Length
Millimeters
The millimeter is a unit of length in the metric system equal to one thousandth of a meter.
Inches
The inch is a unit of length in the imperial system equal to 2.54 centimeters.
Formula
To convert from millimeters to inches, divide the length by 25.4.
millimeters (mm)
Description
The millimeter is a unit of length in the metric system equal to one thousandth of a meter.
History
Defined in 1795 as part of the metric system numbering, based on one ten-millionth of the distance from the equator to the North Pole.
Symbol Origin
Derived from 'milli' (thousandth) and 'meter'.
Usage Context
Commonly used in engineering, manufacturing, and for measuring small objects like rain, screws, or paper thickness.
Main Usage
Did you know?
A standard credit card is about 0.76 mm thick.
inches (in)
Description
The inch is a unit of length in the imperial system equal to 2.54 centimeters.
History
Historically based on the width of a human thumb. In the 14th century, it was defined as the length of three barleycorns placed end to end.
Symbol Origin
Derived from the Latin 'uncia', meaning 'one-twelfth' (of a foot).
Usage Context
Used for screen sizes (TVs, phones), tire rim diameters, and paper sizes (US Letter).
Main Usage
Did you know?
The international inch was exactly defined as 25.4 mm in 1959 to unify the US and British standards.
Quick Conversion Table
| millimeters (mm) | inches (in) |
|---|---|
| 1 | 0.0393701 |
| 2 | 0.0787402 |
| 5 | 0.19685 |
| 10 | 0.393701 |
| 25 | 0.984252 |
| 50 | 1.9685 |
| 100 | 3.93701 |
| 500 | 19.685 |
| 1000 | 39.3701 |
| 2500 | 98.4252 |
| 5000 | 196.85 |
| 10000 | 393.701 |
Frequently Asked Questions
How to convert millimeters to inches?
To convert from millimeters to inches, divide the length by 25.4.
How many inches in 1 millimeters?
1 millimeters is equal to 0.0393701 inches.
What is a millimeters?
The millimeter is a unit of length in the metric system equal to one thousandth of a meter.
What is a inches?
The inch is a unit of length in the imperial system equal to 2.54 centimeters.