What area will a 750ml can of expanding foam fill?

The area a 750ml can of expanding foam can fill depends on the foam's expansion ratio, which typically ranges from 2 to 3 times its original volume. Generally, a 750ml can may fill an area of approximately 1.5 to 2.25 cubic meters once fully expanded. However, the exact coverage will also depend on the depth and type of application, so it's best to refer to the manufacturer's specifications for more precise guidance.