Hang a bathroom mirror where the people using the basin can see comfortably, with clearance above taps and below lights or cabinets. There is no single height above the sink that works for every mirror. The mirror’s height, basin type and users matter more than repeating a fixed gap.
A common starting idea is to leave some clear wall above the basin or splashback, but test the actual reflection before drilling. A tall vessel tap, a short circular mirror and a tall rectangular mirror need different layouts.
Measure the usable space first
- Measure from the finished floor to the vanity, basin rim and highest tap point.
- Mark any splashback, wall lights, shelves and cabinet doors.
- Draw the mirror’s full outline at the proposed height.
- Check the reflection for the tallest and shortest regular users.
- Allow the clearance needed to engage the mirror’s mounting brackets.
Do not confuse the bottom edge with the centre of the mirror. If a mirror is 80 cm high, its centre is 40 cm above its bottom edge; a 60 cm circle has its centre 30 cm above the bottom. That difference changes the viewing position even when both have the same gap above the basin.
Compare three shapes before deciding
60 cm round dual-light mirror — £128. A circular outline creates a softer focal point. Check that the curved sides still leave the reflection you want at eye level, particularly when users have different heights.
60 × 80 cm dual-light mirror — £129. The taller portrait format gives more vertical reflection than a 60 cm circle. Mark its upper edge as carefully as its lower edge near the taps.
50 × 70 cm oval dual-light mirror — £148. A narrower outline for a small basin area. Position it around the useful central reflection rather than assuming the widest part must sit at a standard floor height.
Prices and stock checked on 27 October 2026. Listed prices are before any checkout promotion.
Plan for the way the room is used
For a vessel basin, account for the raised rim and tall tap. For a seated user, test the sightline from the actual seat. For a family bathroom, a taller mirror can be more useful than raising a small mirror to suit only one person. Avoid positioning controls where they are difficult to reach.
With two basins, centre each mirror around its own viewing position or use one broad mirror across the pair. Check that opening cabinets and wall lights do not collide with the glass or block the reflection.
Keep the lighting in the same plan
The mirror should not overlap a light fitting or depend on moving a fitting after the holes are drilled. Front illumination and rear glow serve different purposes, and existing wall lights may need their own clearance. When comparing round illuminated mirrors or an existing gold-framed round backlit design, use its complete dimensions and mounting details.
Confirm the outline, then arrange fitting
Stand back and check the position from the doorway, then use the basin normally to check the reflection. Once the height works, transfer the actual fixing positions from the product instructions. The wall structure and mirror weight determine the fixings; our wall-anchor guide and UK LED mirror installation guide explain the preparation.
A floor-height rule for a full-length dressing mirror serves a different viewing task. Above a basin, comfortable everyday use is the best test of the height you choose.