Inch to Meter Converter

The inch is a unit of length in the imperial and US customary systems. It is defined as exactly 2.54 centimeters.

Facts About Inches

• 1 inch = 2.54 centimeters
• 1 inch = 25.4 millimeters
• 12 inches = 1 foot
• 36 inches = 1 yard

Common Uses

• Screen sizes (TVs, monitors, phones)
• Tire and wheel sizes
• Construction lumber (2x4, etc.)
• Paper sizes (US Letter = 8.5 x 11 inches)
• Rainfall measurements in the US

History

The inch has been used since ancient times. The word "inch" derives from the Latin word "uncia," meaning "one-twelfth," which was also the name of a Roman unit. The inch was originally defined as the width of a man's thumb at the base of the nail.

In 1959, the international yard and pound agreement defined the inch as exactly 25.4 millimeters (2.54 centimeters), establishing a standard conversion between imperial and metric systems. This definition is now used universally in the United States, United Kingdom, Canada, Australia, New Zealand, and South Africa.

The meter is the base unit of length in the International System of Units (SI). It is defined as the length of the path traveled by light in a vacuum in 1/299,792,458 of a second.

Facts About Meters

• 1 meter = 100 centimeters
• 1 meter = 1000 millimeters
• 1 meter ≈ 3.28084 feet
• 1 meter ≈ 1.09361 yards

Common Uses

• Measuring room dimensions
• Scientific calculations
• Engineering specifications
• Track and field events (100m dash, etc.)

History

The meter was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole. It has since been redefined multiple times for greater precision.