Length

What is a Meter? (m)

Definition

The meter (symbol: m) is the base unit of length in the International System of Units (SI). It is defined as the distance light travels in a vacuum in 1/299,792,458 of a second. The meter is the foundation for all other metric length units, which are derived by multiplying or dividing by powers of ten.

Common Uses

  • › Height and body measurements
  • › Room and building dimensions
  • › Athletic track and field events
  • › Scientific measurement

Converters

Meters to Feet → Meters to Centimeters → Meters to Kilometers →

Key Facts

  • Symbol
    m
  • Category
    Length
  • 1 m = 100 cm
  • 1 m = 1,000 mm
  • 1 m ≈ 3.281 ft
  • 1 m ≈ 39.37 in
  • 1,000 m = 1 km

Related Terms

About the Meter

The meter (symbol: m) is the base unit of length in the International System of Units (SI). It is defined as the distance light travels in a vacuum in 1/299,792,458 of a second. The meter is the foundation for all other metric length units, which are derived by multiplying or dividing by powers of ten.

Equivalents and conversions

  • 1 m = 100 cm
  • 1 m = 1,000 mm
  • 1 m ≈ 3.281 ft
  • 1 m ≈ 39.37 in
  • 1,000 m = 1 km

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