Change checkbox size WPF

How about this?

<CheckBox>
    <CheckBox.LayoutTransform>
        <ScaleTransform ScaleX="2" ScaleY="2" />
    </CheckBox.LayoutTransform>
</CheckBox>

You can use double values for ScaleX and ScaleY if the integer values are not exactly what you want.

Here is a possible solution found on msdn:

http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/98cf8a65-f4ca-4ff5-9851-c2989b91a013

Related