Find some of the highest-rated small countertop microwaves we test below. Large countertop microwaves (ranging from 1.4 to 2.2 cubic feet of internal space) tend to have more power, resulting in ...

But most microwave ovens have less usable space than advertised, according to our tests: In fact, both over-the-range (OTR) and countertop microwaves have a usable capacity of about 50 percent of ...