Enter the change in x and change in y of a length along with a shape or image pre and post-scaling to calculator the scale factor dilation.

## Scale Factor Dilation Formula

The following formula is used to calculate the scale factor dilation of an image or shape.

SF = X2/X1 = Y2/Y1

- Where SF is the scale factor dilation
- X2 and Y2 are the change in X and Y of the final image
- X1 and Y1 are the change in X and Y of the original image

## Scale Factor Dilation Definition

A scale factor dilation is a ratio of the length or area of an image before and after it has been enlarged or shrunk.

## Scale Factor Dilation Example

How to calculate a scale factor dilation?

**First, determine the change in X and Y of the original image.**Measure the change in X and Y of a single length of the original image.

**Next, determine the change in X and Y of the modified image.**Measure the change in X and Y of the same length on the modified image.

**Finally, calculate the scale factor dilation.**Calculate the total scale factor dilation using the equation above.

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