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Map Scale

Tool for calculating lengths according to drawing scales / maps scales / plans scales from the length as it is drawn or as actually measured.

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Map Scale -

Tag(s) : Arithmetics

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# Map Scale

## Scale Calculator

Tool for calculating lengths according to drawing scales / maps scales / plans scales from the length as it is drawn or as actually measured.

### How to calculate a map scale?

A scale of a map is a ratio, a fraction between 2 numbers, the first represents the value measured on the map, the second its correspondence with the actual value of the element.

Example: 1:100 is read 1 to 100 or 1 hundredth scale and means that 1 unit on the map corresponds to 100 units in reality. It can be 1cm (which will be 100cm) or 1km (which will be 100km). The plan is then 100 times smaller than reality.

Example: 2:1 reads '2 to 1' and means that 2 units on the plane correspond to 1 in reality. This means that the plane is a magnification 2 times, a zoom x2 of reality.

### How to measure a length on a map to scale?

If a map is scaled, its measurements are proportional to reality, the coefficient of proportionality is the inverse of the value of the scale.

Example: 2cm on a scale map 1:10 (ie 1/10 whose inverse is '10/1 ') corresponds to 2*(10/1)=20cm in reality.

Conversely, starting from a real length, its multiplication by the scale makes it possible to calculate its length on the map.

Example: 20cm actually represent 2cm on a scale map 1:10 because 20*(1/10)=2cm

## Source code

dCode retains ownership of the source code of the script Map Scale online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be released for free. To download the online Map Scale script for offline use on PC, iPhone or Android, ask for price quote on contact page !