There is no one definitive answer to this question as it will depend on the specific dimensions and layout of your kitchen. However, most standard microwaves measure between 12-16 inches wide and take up around 2 cubic feet of space. So if you have a little extra room in your kitchen, a built-in microwave could be a good option for you.

You will need at least the same amount of space as you would for a countertop microwave. The width of the microwave should be about 16-18 inches, and the height should be around 13 inches.