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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

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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.

Answers to Questions

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

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Source code

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