Definition: A meter, or metre (symbol: m), is the basic unit the length and distance in the international System of units (SI). The meter is defined as the distance traveled by irradiate in 1/299 792 458 of a second. This definition was slightly modified in 2019 come reflect transforms in the an interpretation of the second.

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History/origin: Originally, in 1793, the meter was characterized as one ten-millionth that the distance from the equator come the phibìc Pole. This readjusted in 1889, once the international prototype metre was created as the length of a prototype meter bar (made of one alloy of 90% platinum and 10% iridium) measured at the melting suggest of ice. In 1960, the meter to be again redefined, this time in terms of a certain variety of wavelengths that a certain emission heat of krypton-86. The current meaning of the meter is efficiently the same as the an interpretation that was adopted in 1983, through slight changes due come the readjust in meaning of the second.

Current use: being the SI unit of length, the meter is used an international in countless applications such as measuring distance, height, length, width, etc. The United states is one notable exception in that it mainly uses united state customary systems such together yards, inches, feet, and also miles instead of meters in everyday use.


Definition: An customs (symbol: in) is a unit of size in the imperial and US customary solution of measurement. An inch was identified to be identical to precisely 25.4 millimeter in 1959. There are 12 inch in a foot and 36 inches in a yard.

History/origin: The hatchet "inch" was acquired from the Latin unit "uncia" which equated to "one-twelfth" the a roman foot.

There have actually been a variety of different standards for the inch in the past, through the current an interpretation being based on the worldwide yard. One of the earliest meanings of the inch was based on barleycorns, where an customs was equal to the length of 3 grains of dry, ring barley inserted end-to-end. An additional version of the inch is additionally believed to have been derived from the width of a person thumb, where the length was derived from averaging the broad of 3 thumbs: a small, a medium, and a big one.

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Current use: The customs is greatly used in the united States, Canada, and also the united Kingdom. The is also sometimes used in Japan (as well as various other countries) in relation to electronic parts, favor the dimension of screen screens.

Meter to customs Conversion Table

Meter Inch
0.01 m0.3937007874 in
0.1 m3.937007874 in
1 m39.3700787402 in
2 m78.7401574803 in
3 m118.1102362205 in
5 m196.8503937008 in
10 m393.7007874016 in
20 m787.4015748032 in
50 m1968.5039370079 in
100 m3937.0078740158 in
1000 m39370.078740157 in

How to transform Meter come Inch

1 m = 39.3700787402 in1 in = 0.0254 m

Example: convert 15 m come in:15 m = 15 × 39.3700787402 in = 590.5511811024 in