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Millimeter (mm)
Centimeter (cm)
Meter (m)
Kilometer (km)
Mile (mi)
Yard (yd)
Foot (ft)
Inch (in)
Nautical mile (nmi)

What is millimeter (mm, millimetre)?

A millimeter (abbreviated as mm and sometimes spelled as millimetre) is a small unit of displacement (length/distance) in the metric system. The metric system, sometimes considered synonymous with the International System of Units (SI), is used throughout the world in the sciences and is the standard of measurement for science engineering,technology and Mathematics (STEM).

The word meter is Greek for measure. Millimeters are used to measure very small but visible-scale distances and lengths. In terms of real-world comparisons, a millimeter is roughly the size of the wire used in a standard paper clip. The metric system is based on decimals: There are 10mm in a centimeter and 1000mm in a meter. The base of the Greek-rooted words indicates that they are hundredths (centi) and thousandths (milli) of meters.

Some fractions of meters:

  • A nanometer is one-billionth of a meter.
  • A micrometer is one-millionth of a meter.
  • A millimeter is one-thousandth of a meter.
  • A centimeter is one-hundredth of a meter.
  • A decimeter is one-tenth of a meter.

What is a Centimeter?

A measure of length. It is about the width of a fingernail.There are 100 centimeters in a meter.The abbreviation is cm

A typical ruler measures up to 30 cm, like the one shown below. It has cm along the top and inches (1 inch = 2.54 cm) along the bottom.

Whats is a meter?

The metre is defined as the length of the path travelled by monochromatic light in a vacuum in 1299 792 458 of a second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km.

The meter is the basic unit of length in the SI system of units. The meter is defined to be the distance light travels through a vacuum in exactly 1/299792458 seconds. An interesting effect of the definition of the meter this way is that it fixes the speed of light in a vacuum to the exact value of 299,792,458 m/s. The previous definition of the meter was one ten-millionth of the distance from the geographic north pole to the equator, measured over the earth's surface in a circle running through Paris, France. Meters are abbreviated using a lower case "m" in measurements.

1 m is about 39.37 inches. This is a bit more than one yard. There are 1609 meters in a statute mile. Prefix multipliers based on powers of 10 are used to convert meters to other SI units. For example, there are 100 centimeters in a meter. There are 1000 millimeters in a meter. There are 1000 meters in a kilometer.

What is kilometer used to measure?

The kilometre (SI symbol: km; /ˈkɪləmiːtər/ or /kɪˈlɒmɪtər/), spelt kilometer in American English, is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for 1000).

The metric system is a system of measurement that uses the meter as the basis for measuring length. A kilometer is a metric unit of length that is equal to 1,000 meters. We abbreviate kilometers using the letters km. Usually people use kilometers to measure long distances!

kilometer. The definition of a kilometer is a unit of measurement equal to 1,000 meters or . 6214 miles. An example of a kilometer is how far a person will run if she wants to run for just over 1/2 of a mile.

How many Kilo is a mile?

The mile is an English unit of length of linear measure equal to 5,280 feet, or 1,760 yards, and standardised as exactly 1,609.344 metres by international agreement in 1959.

A noncompetitive, relatively in-shape runner usually completes one mile in about 9 to 10 minutes, on average. If you're new to running, you might run one mile in closer to 12 to 15 minutes as you build up endurance. Elite marathon runners average a mile in around 4 to 5 minutes.