Appliances & Utilities calculator
What Microwave Size Fits My Space?
Use available width, available depth, available height to find maximum microwave dimensions.
Enter your measurements
What Microwave Size Fits My Space uses available width, available depth, available height and the other configured measurements to return maximum microwave dimensions with a formula written specifically for this tool.
- Available width — Required
- Available depth — Required
- Available height — Required
- Required side ventilation — Required
- Top ventilation — Required
- Rear ventilation — Required
Maximum microwave dimensions
Enter the measurements above to calculate maximum microwave dimensions.
How the calculation works
V9 calculation: maxMicrowaveWidth=max(0,availableWidth-2×ventSide); maxMicrowaveHeight=max(0,availableHeight-ventTop); maxMicrowaveDepth=max(0,availableDepth-ventRear). The result is reported as maximum microwave dimensions.
Worked example
Example: Available width = 220 cm; Available depth = 150 cm; Available height = 200 cm; Required side ventilation = 50 cm; Top ventilation = 50 cm; Rear ventilation = 50 cm. Result: Max Microwave Depth = 100 cm; Max Microwave Height = 150 cm; Max Microwave Width = 120 cm.
Before you decide
Recheck the limiting measurement before purchase or installation. This page calculates the stated geometry or quantity only; product-specific construction or installation details can still affect the final choice. For what microwave size fits my space, the limiting result on this page is maximum microwave dimensions.
Direct measurement/geometry calculation. No external reference is required for the arithmetic itself; the result is derived only from the user-entered measurements and the formula stored in calculationLogicJson.
Frequently asked questions
What does the Microwave Size calculator tell me?
It returns maximum microwave dimensions from the measurements entered on this page. The calculation is specific to microwave size, so the result should be compared with the exact product or specification you are considering.
Which measurements should I take for microwave size?
Measure available width, available depth, available height, required side ventilation, top ventilation, rear ventilation. Use clear, usable dimensions rather than nominal room or product labels.
Should I round the maximum microwave dimensions?
Keep the calculated value for comparison, then choose a real product that meets or stays within the returned maximum microwave dimensions while allowing for the clearances, tolerances or ratings shown by its manufacturer.