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Dimension Guide

Mirror Dimensions: How to Size a Mirror

Quick Answer

A mirror should span about two thirds of the furniture beneath it and hang with its centre 57 to 60 inches from the floor. Above a vanity, keep it 2 to 4 inches narrower than the unit; above a console, leave 4 to 6 inches between furniture and frame.

Standard mirror sizes and placement

Standard mirror sizes and placement
TypeTypical sizePlacement
Round accent24in to 36in diameterAbove a console or basin, centre at 60in
Wall mirror30in x 40inTwo thirds the width of the furniture below
Full length24in x 65inLeaning or wall-mounted, minimum 65in tall
Oversized arch40in x 80inFloor-standing against a clear wall
Convex18in to 30in diameterHung high as a focal point

How to Measure Before You Hang

Start with the furniture, not the wall. Measure the console, credenza, vanity or mantel and multiply by two thirds — that is your target mirror width. A mirror narrower than half the furniture looks stranded; one wider than the furniture makes the piece below look undersized.

Then set the height. Eye level for most people is 57 to 60 inches, and the mirror's centre should land there regardless of ceiling height. Above furniture, leave 4 to 6 inches of wall between the top of the piece and the bottom of the frame — closer and it reads as one clumsy object, further and the pair separates.

Room by Room

Bathrooms: 2 to 4 inches narrower than the vanity, centred on the basin rather than the cabinet if they differ, with sconces at 66 inches and 36 to 40 inches apart. Entryways: a mirror above the console at two thirds width, positioned to reflect the room rather than the front door.

Living rooms: above a mantel, keep the mirror within the mantel's width and leave 4 to 8 inches above the shelf. Bedrooms: a full-length mirror needs at least 65 inches of height to show a full reflection, and 24 inches of width to be useful for dressing. Floor mirrors must be anchored to the wall regardless of weight.

What to Reflect

The most common mistake has nothing to do with size: a mirror hung to fill a wall rather than to reflect something worth seeing. Before committing to a position, hold the mirror up and look. A window, a doorway, a piece of art or a lit lamp are all worth reflecting; a blank wall, a ceiling fixture or a television are not.

In narrow corridors, a mirror on the long wall doubles apparent width. In dark rooms, place it perpendicular rather than opposite a window so daylight rakes across the room instead of bouncing straight back out of it.

Interactive Tool

Prefer to work from your own measurements? Use the Mirror Size Calculator for an instant recommendation.

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Frequently Asked

How high should a mirror be hung?
With its centre 57 to 60 inches from the floor — standing eye level for most people.
What size mirror goes above a 60 inch vanity?
Around 56 inches wide, or two mirrors of about 24 inches each above a double basin.
How tall does a full-length mirror need to be?
At least 65 inches, and 24 inches wide for a usable reflection.
How much gap between a console and a mirror?
4 to 6 inches of visible wall.
Should a mirror be wider than the furniture below?
No — two thirds of the furniture width is the target.