Convert distances between two map scales and check enlargement effects.
Linear distances scale by the ratio of denominators, but area scales by its square. Halving the scale quarters the paper area needed for the same ground. The squared area relationship is why enlarging a map section for print consumes far more space than the linear factor suggests.
Map Scale Conversion
Target distance = source distance × (source denominator ÷ target denominator)
Target distance = source distance × (source denominator ÷ target denominator) Linear distances scale by the ratio of denominators, but area scales by its square. Halving the scale quarters the paper area needed for the same ground.
The squared area relationship is why enlarging a map section for print consumes far more space than the linear factor suggests.
This calculator takes 3 inputs: Source scale denominator, Target scale denominator, Distance on the source map. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.