Built-in microwaves and over-the-range microwaves require specific cabinet openings depending on the installation type.
Typical microwave dimensions include:
Width: 24 to 30 inches
Height: 16 to 18 inches
Depth: 15 to 18 inches
Over-the-range microwaves are usually designed to fit a 30-inch cabinet opening above the range.
Built-in microwaves may require trim kits or dedicated cabinet spaces depending on the model.
Measure the width of the cabinet opening where the microwave will be installed.
Measure the height of the opening between cabinets.
Measure the depth of the cabinet space to ensure the microwave will fit.
Check that there is adequate ventilation space around the microwave according to manufacturer requirements.
Write the measurements using decimals (example: 29.5 inches).
Many homeowners discover installation issues after the microwave is delivered because the cabinet opening does not match the appliance dimensions.
Measuring carefully before purchasing helps prevent installation delays and extra modifications.
The Appliance Fit Check app helps homeowners determine whether appliances will fit their available kitchen space before purchasing.
The app compares appliance product dimensions with your measured space and returns one of four results:
• Fits Perfectly
• Tight Fit
• Requires Modification
• Does Not Fit
This helps avoid installation surprises after appliance delivery.