Find a microwave that actually fits
Enter your cabinet or counter dimensions — we calculate manufacturer-required ventilation clearances for 696 models so you know what fits before you buy.
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Looking to Replace an Old Microwave?
Have a discontinued GE, Kenmore, Whirlpool, LG, or other legacy model? We've catalogued 100+ popular discontinued models with replacement recommendations that fit your exact cabinet dimensions — plus parts sources if you need to repair the old one.
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Why ventilation clearances matter
Every microwave manufacturer publishes required clearances — the minimum breathing room the unit needs around it for safe operation. Most people ignore them. The result: overheating, voided warranties, and microwaves returned because the door hits the wall.
A typical countertop microwave needs 3 inches on each side and 3 inches on top. That means a 20-inch-wide unit requires a 26-inch-wide opening. MicrowaveFit does this math for every model, every time.