Scale conversion in %

Convert an existing model, plan or STL file from one scale to another. Find the size percentage to use when reducing or enlarging it.

Source scale

Source scale denominator (1:n)

Target scale

Target scale denominator (1:n)

When printing or in a slicer, use the result as the new size percentage. In CAD, such as Fusion 360, use the scale factor. Keep all axes in proportion. From H0 (1:87) to TT (1:120), set 72.5% or a factor of 0.725, a reduction of 27.5%.