Convert Scale Length to Actual Length


Select the units you are converting from:



Enter the scale length you want to convert.

If you are converting feet and inches, to convert a length of 1' 3 3/4'', enter 1 in the first box, 3 in the second and 3/4 in the third:

     


Select the scale the scale length is in. If the scale you use is not listed, you can enter it manually.

For example, if you want to calculate a ratio of 1:100, simply enter 100 in the Custom Scale Ratio field:






Select the units of measure you want the converted length to be displayed in:







Note: The scale calculations made on these pages use the scale ratios in the table below. As these ratios are used, a length calculated in 4mm scale will not be twice the same length calculated in 2mm scale.

2mm scale (US/EU N)1:160
2mm scale (2mm FS)1:152.3
2mm scale (British N)1:148
3mm scale (British TT)1:101.6
3.5mm scale (HO)1:87.1
4mm scale (OO, EM, P4)1:76.2
7mm scale (O)1:43.5




Application created by John Donnelly, Copyright © 2020, Version 1.0.201116.0