Convert meters to inches

Meter

لمحة عامة
A meter (symbol: m) is the SI base unit of length, defined by the distance light travels in a vacuum during 1 ⁄ 299 792 458 of a second. This fundamental definition, adopted in 1983 and refined in 2019 alongside updates to the second, guarantees unchanging accuracy worldwide.

الأصول

• 1793: Defined as one ten-millionth of the distance from the Equator to the North Pole.

• 1889: Realized by a platinum–iridium prototype bar at 0 °C.

• 1960: Recast using a specific number of krypton-86 emission wavelengths.

• 1983–2019: Tied directly to the constant speed of light.

Contemporary Use
Meters are used across science, engineering, architecture, and everyday life—from blueprint specifications to room measurements. While the United States often relies on Imperial units for daily tasks, meters underpin its scientific standards and international trade.

Inch

لمحة عامة
An inch (symbol: in) is a length unit in the Imperial and U.S. customary systems. Since 1959, it’s exactly 25.4 mm. Each foot is 12 inches, and a yard spans 36 inches.

الأصول
The word “inch” comes from the Latin أونسيا, meaning “one-twelfth.” Early definitions tied an inch to the length of three barleycorns or the average width of three thumbs, until it was standardized against the international yard.

Contemporary Use
Inches remain prevalent in the U.S., Canada, and U.K. for woodworking, hardware sizing, and electronics (screen diagonals). They also appear in some industries and regions worldwide that reference customary units.

Meter → Inch Conversion Table

كيفية التحويل

• 1 m = 39.37007874 in

• 1 in = 0.0254 m

مثال على ذلك

To turn 15 m into inches: