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Scale Converter

Convert a measurement on a map or plan to its real-world size, or the reverse, from the drawing scale such as 1 : 100.

About Scale Converter

A drawing scale of 1 : N means one unit on the map or plan represents N of the same units in reality. To get the real size, this converter multiplies the drawing measurement by N; to get the drawing size, it divides the real measurement by N. The result is shown in metres, centimetres, and millimetres. The scale must be greater than zero, and both sides of the ratio use the same unit.

How to use Scale Converter

  1. Fill in "Scale 1 :", "Measurement", "Measurement unit" and "This measurement is".
  2. The result appears below and updates as you type.
  3. Copy the result with the copy button, or download it as a file where that is offered.

Questions about Scale Converter

How long is 5 cm on a 1 : 100 plan in reality?

Multiply by the scale: 5 cm × 100 = 500 cm, which is 5 metres. On a 1 : 50 plan the same 5 cm line would represent 2.5 metres.

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