About this scale calculator
At scale 1:N, every real length is divided by N. A 4.5 m car at HO scale (1:87) is 0.0517 m, 5.17 cm; at 1:24 it is 18.75 cm. Reverse the direction to turn a measurement on a plan back into real size.
1:N
Scale Calculator
Details
How to use Scale Calculator
What the tool does, how to run it, and what to expect from the result.
At a glance
Who Scale Calculator is for
A quick way to understand who this helps, what it solves, and where it connects next.
Best fit
Students, teachers and anyone checking a calculation.
Ideal for
Using the scale calculator without installing anything or signing up.
FAQ
Common questions
Short answers for the questions people usually have before trying a utility like this.
What are common model scales?
Z 1:220, N 1:160, HO 1:87, O 1:48 (US), and 1:24 or 1:18 for car models.
How do I read a map scale of 1:25,000?
1 cm on the map is 25,000 cm, or 250 m, on the ground.
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