Make note of the manufacturer name and model number of each available over the range microwave variety at local small appliance retailers.
Open the door of each microwave and take a measurement of the height, length and width of the internal compartment in feet. Write these figures next to the corresponding manufacturer name and model number.
Multiply the height, length and width figures from each microwave to get a capacity total in cubic feet for that microwave. A microwave that is 1/2 a foot tall, 1 1/2 feet wide and 1 foot deep would have a total capacity of .75 cubic feet.
Assess your notes, comparing over the range microwaves' relative capacities in cubic feet.
Things You Will Need
- Measure the largest items you intend to cook or reheat in the over the range microwave to get an idea of what size you will need.