A mirror hung 10 cm too high is more noticeable than any other decorating error, because the reflection cuts your body at the wrong place. The rule is simple: mirrors are positioned by the centre line of the glass, not by the top edge, and the centre line changes with what the mirror is for.
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Centre-line heights by mirror type
| Mirror | Centre of glass from floor | Typical size |
|---|---|---|
| Full-length, hanging | 135–145 cm | 150–160 × 50–60 cm |
| Full-length, leaning | 130–140 cm (effective) | 150–170 × 50–60 cm |
| Bathroom, above basin | 160–165 cm | 80–100 × 60–70 cm |
| Hallway / console | 150–160 cm | 90–120 × 40–60 cm |
| Dressing / vanity, seated | 115–125 cm | 58–80 × 48–62 cm |
| Over a chest of drawers | 140–150 cm | 80–110 × 40–60 cm |
Work backwards from the size: for a 150 cm mirror with the centre at 140 cm, the bottom edge sits at 65 cm and the top at 215 cm. That is fine in a 250 cm room and wrong under a 220 cm ceiling. If the ceiling is low, drop the centre to 130 cm so the top edge clears the ceiling by 15 cm.
Full-length mirrors: the 15 cm base rule
To see your shoes as well as your face, the bottom of the glass should be 15–20 cm above the floor. Higher than 25 cm and you will bend to check your hem, which defeats the point of a full-length mirror.
- Distance: stand 1–1.5 m from the glass to see head to toe without distortion at the edges.
- Wall space: leave a 5 cm gap to any door frame so the mirror does not visually crowd the opening.
- Flooring: a mirror hung over a carpet looks shorter because the pile hides the bottom 2 cm — raise it accordingly.
Bathroom mirrors: 20 cm above the tap
The centre line of a bathroom mirror should sit at eye level for the shortest regular user, around 160–165 cm for adults. Leave at least 20–25 cm clear between the bottom of the glass and the top of the tap or basin so you can lean in to shave or do make-up. Above a basin, the width matters more than the height: a mirror 10–15 cm narrower than the basin looks accidental.
In a room used by children, tilt the mirror or add a second lower one at 130–140 cm rather than hanging the main mirror low for everyone.
Leaning mirrors: safe by design
A leaning mirror looks relaxed but is a tipping hazard, especially in homes with children or pets. Three rules keep it safe:
- Lean angle: 5–10° from vertical. More than 10° and the centre of gravity moves outside the base.
- Base against the skirting and the top touching the wall — no gap at the top.
- Anti-tip strap screwed into a stud or a masonry anchor, even if the mirror feels stable.
Never lean a mirror on a rug: the pile lets the base creep forward over months, which is how most leaning-mirror accidents start.
Weight: what a 160 cm mirror actually needs
Tempered glass at 4–5 mm plus a frame is heavier than people expect. A 160 × 60 cm mirror is roughly 15–20 kg; a 150 × 50 cm LED mirror with a metal frame lands around 12–16 kg.
| Wall type | Fixing for 15–20 kg |
|---|---|
| Masonry / brick | Two M8 anchors or masonry plugs, at least 60 mm deep |
| Plasterboard on studs | Fix into studs with wood screws; add a cross batten if studs do not align |
| Plasterboard, no studs | Two spring-toggle or hollow-wall anchors rated 25 kg each, never plastic plugs |
| Tiled bathroom wall | Drill through the tile with a masonry bit; use a suction or diamond bit and keep the drill off hammer mode |
Always use two fixing points on the horizontal centre line, not one hook at the top: a single point lets a tall mirror swing and crack at the corners.
Lighting: in front, not behind
Light should hit your face, not the back of your head. A backlit LED mirror is decorative but leaves your face in silhouette. For a mirror used for grooming, put light at 60–70 cm either side at face height, or choose a mirror with front-facing bulbs. If the mirror faces a window, expect glare for two hours a day — angle it 10–15° away from the glass rather than moving the mirror to another wall.
Keep reading
Mirrors work hardest in small rooms, where they double the light from a window. Pair one with the storage in the bedroom or living room collection, and keep the walkway clear using the 90 cm hallway rule.
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