Calculate scale factor
Find the scale factor between an original measurement and a scaled copy.
Also known as: calculate scale factor calculator, scale factor calculator, calculate scale factor, ratios math, ratios calculate scale factor
Inputs
Results update when you click Calculate.
Scale factor
2.5000
Enlargement
k = scaled / original = 25.00 / 10.00
Percent change
150.00%
Ratio
25.00 : 10.00
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What this result means
Find the scale factor between an original measurement and a scaled copy. Scale factor k = scaled length ÷ original length.
Assumptions
- Rule dependency: Universal formula.
How is it calculated?
Scale factor k = scaled length ÷ original length.
Example
10 → 25 gives scale factor 2.5 (150% increase).
Frequently asked questions
Area scale?+
Multiply area by k² when lengths scale by k.