What the Mirror Size Calculator actually calculates
Mirror width is suggested at 60 to 75 percent of furniture width. Location supplies a fixed bottom-gap range, without assuming a furniture height or measuring the room. The result does not specify mirror height, top elevation, fixing strength, or fireplace-related safety clearance.
The calculation path
Mirror width is scaled to the supporting furniture while the hanging gap follows the selected location.
Inputs that can change the answer
- Furniture width: Enter furniture width in m.
- Location: Select the applicable location from the listed choices.
Checks that stay outside the formula
Keep the mirror narrower than the furniture below it for visual stability.
A practical order for entering the data
- Measure the width of the console, vanity, or mantel supporting the composition.
- Select the mirror location and measure the reference surface for the suggested bottom gap.
- Check the suggested width range and bottom gap against taps, backsplash, ceiling, and your intended reflection.
Project walkthrough: Wall finishes: wallpaper, panels, and gallery layouts
Project walkthrough: Plan a gallery wall from display area to frame spacing
Engine check using the prefilled sample
Worked example: furniture width = 1.5 m and location = Console. Replace the sample wall and item dimensions with the exact section and product format involved in your layout.
Results for these inputs
- Minimum mirror width
- 0.90 m
- Maximum mirror width
- 1.13 m
- Suggested bottom gap
- 15–20 cm above the furniture