A vanity and mirror pairing looks designed when the mirror is 70 to 80 percent of the vanity width, or the same width for a wide single mirror, and its center sits 57 to 65 inches off the floor. Match the frame to the faucet finish, not to the cabinet. Mirrors run from 14 to 110 inches wide, so every vanity width below has a match, and the mirror collection can be filtered by width.
The vanity was installed, the sconces were wired, and the mirror the customer had carried home from a design store turned out to be 22 inches wide over a 48 inch cabinet. It looked like a postage stamp, and she called asking if the vanity was too big, which I understand, because the vanity is the thing you just paid for.
The mirror gets bought last and it gets picked by taste, so it's the piece most likely to end up the wrong size. A mirror that's too small shrinks the vanity, one that's too wide fights the sconces, and either way the room looks unfinished after all the money is spent, and nobody can quite put a finger on why.
A vanity and mirror pairing looks designed when the mirror is 70 to 80 percent of the vanity width and its center sits 57 to 65 inches off the floor. Those two numbers fix almost every pairing.
Bathroom mirror pairings: the short answer
Three rules cover most bathroom mirror pairings. Size the mirror at 70 to 80 percent of the vanity width, or equal to it, and hang it with the center at 57 to 65 inches and the bottom edge 4 to 8 inches above the backsplash. Match the frame or the LED trim to the faucet finish.
- 24 inch vanity: 18 to 24 inch mirror. A 24 inch round works at full width.
- 30 inch vanity: 22 to 24 inch mirror, or 30 inch for the full width look.
- 36 inch vanity: 26 to 30 inch mirror, or 36 inch.
- 48 inch vanity: 34 to 40 inch mirror, or 48 inch.
- 60 inch double: one 48 to 60 inch mirror, or two 24 inch mirrors centered over each sink.
- 72 inch double: one 60 to 72 inch mirror, or two 28 to 30 inch mirrors.
Framed, frameless and LED mirrors follow the same rules. Measure a framed mirror at the outside edge of the frame.
Proportion rules with numbers
Width: 70 to 80 percent of the vanity, or equal to it, and never wider. Height: center at 57 to 65 inches above the floor, with the bottom edge 4 to 8 inches above the backsplash. Double vanities take one wide mirror or two mirrors at 40 to 50 percent of the width each.
Width. For a 48 inch vanity, 70 to 80 percent is 34 to 38 inches, so a 36 inch mirror is the safe pick. Equal width, a 48 inch mirror, reads more modern but needs a frameless or thin edge or it looks heavy. Wayfair's mirror guide puts the same rule as 2 to 4 inches narrower than the vanity on each side.
Mounting height. Set the center of the mirror between 57 and 65 inches off the floor, which covers the eye level of most adults, per Edward Martin and WELLFOR. If the people using the bath vary a lot in height, split the difference at 61 inches and buy a 32 to 36 inch tall mirror so everyone gets their face in it.
Distance above the backsplash. Leave 4 to 8 inches between the top of the backsplash and the bottom of the mirror. With a 36 inch high vanity and a 4 inch backsplash, the mirror bottom lands at 44 to 48 inches. A 30 inch tall mirror hung at 45 inches puts its center at 60 inches, which satisfies both rules at once.
Robern gives the same gap as 5 to 10 inches above the highest point of the faucet, which matters with a tall spout or a vessel sink.
Double vanities. One mirror at 80 to 100 percent of the width gives a hotel look and is easier to light. Two mirrors, each 40 to 50 percent of the width and centered on its sink, give each person their own view. On a 60 inch double that means one 48 to 60 inch mirror or two 24 inch mirrors with a 6 to 12 inch gap for a sconce.
Worked example. The Hayek 48 (about $1,590 with its Carrara marble top) takes the Luster LED at 36 by 30 inches, about $320, for 75 percent coverage. With the bottom 5 inches above the backsplash, the center lands near 60 inches.
Matching the mirror finish to the vanity and faucet
Match the mirror frame to the faucet and the cabinet pulls, not to the cabinet colour. A black frame with a black faucet over a white oak vanity looks planned. A black frame over a black vanity with a chrome faucet doesn't, even though it sounds like it should. Frameless LED mirrors skip the whole question because there's no finish to match.
Warm cabinets. White oak, walnut, natural wood and sage green pair with brushed brass or brushed gold hardware, so pick a brass or gold frame. The Sonoma Framed LED comes in Brushed Gold, Matte Black and Brushed Stainless at 40 or 60 inches wide, about $920 to $1,170.
Cool cabinets. Cement grey, high gloss white, navy and light grey pair with chrome, brushed nickel or matte black. A frameless LED like the Isak Rectangle LED (30 by 32 inches, about $260) over the Freda 40 in Cement Grey (about $1,930) gives 75 percent coverage with no finish to clash.
Wood frame to wood cabinet. The one case where matching the cabinet works is a wood framed mirror in the same stain. The Madison Framed Mirror comes in Tobacco and White to match the Madison vanities, at 24, 28 or 36 by 32 inches for about $280 to $350.
Countertop colour. A white or Carrara top goes with any frame. A black quartz top, like the one on the Bibury, wants a black or brass frame and not chrome. Use 3000K LED light over wood and warm stone, and 4000K over white and grey.
Lighting placement around the mirror
Light the face from both sides, not from above. Mount sconces with their centers 60 to 70 inches off the floor, 2 to 6 inches outside the mirror edges, and 36 to 40 inches apart. With no room beside the mirror, use an LED mirror as the main light.
Sconces. Center them at 60 to 70 inches above the floor per Robern, about eye level, so the light hits the face and not the top of the head. Leave 2 to 6 inches between the mirror edge and the sconce body per the Wayfair guide.
Over mirror bar. A bar light alone throws shadows under the brow and chin, which you notice the first time you try to do your makeup under one. If it's the only option, mount it 75 to 80 inches up.
LED mirrors. A front lit LED mirror with 3000K to 4000K output lights the face evenly without sconces, which is why it's the default in small baths and hotel rooms. Most are hardwired, so plan a junction box behind the mirror center. Anti-fog versions cost $50 to $100 more.
Medicine cabinets. A mirrored medicine cabinet replaces the mirror and adds storage. The Cassini III LED medicine cabinet comes in 28 and 40 inch widths at 60 inches tall, about $1,800 to $2,100.
Pairings by room, with prices
Powder rooms take a 24 to 30 inch vanity with a round or 24 inch mirror. Guest baths take a 36 to 48 inch vanity with a 28 to 36 inch rectangle. Primary baths take a 60 to 72 inch double with one wide LED mirror or two framed mirrors, and the pairings below have the math done.
Powder room. Victoria 24 wall mounted (about $1,450 with the acrylic sink top) with the Glimpse Round LED at 24 inches, about $230. A round mirror works at full width because the circle leaves the corners open.
Guest bath. Louis 30 in White Oak (about $1,500) with the Obadiah Rectangle LED at 24 by 32 inches, about $230. Or Adele 36 in Black Oak (about $2,590 with the Calacatta quartz top) with a 28 by 32 inch Madison Framed Mirror in Tobacco, about $310, for 78 percent coverage.
Primary bath, one mirror. Bova 63 in Matte Gray (about $3,000) with the Gemini Frameless LED at 60 by 28 inches, about $1,100, for the equal width look at 95 percent.
Primary bath, two mirrors. Sage Double 60 (about $2,120) with two Madison Framed Mirrors at 24 by 32 inches, about $280 each, centered over each sink with a sconce in the 12 inch gap between them.
If you still need to choose the vanity, 12 vanity renovation ideas with sizes and prices and the double vanity upgrade guide narrow it down. For a sink that is off center in the cabinet, read vanity and sink do not match before you order the mirror, because the mirror centers on the sink, not the cabinet.
For contractors and designers
Spec the mirror width off the sink centerline, rough in a junction box at the mirror center for LED units, and place sconce boxes at 60 to 66 inches with 2 to 6 inches clear of the mirror edge. For accessible lavatories the bottom of the reflecting surface must be 40 inches or lower (ADA 603.3).
Mirror layout. Center the mirror on the sink, not the cabinet, on offset sink vanities. Width at 70 to 80 percent of the cabinet, or equal width with a frameless edge. Bottom edge 4 to 8 inches above the backsplash; with a 36 inch comfort height vanity and 4 inch splash that is 44 to 48 inches.
Check the result against the 57 to 65 inch center rule and adjust mirror height, not placement.
Accessibility. The 2010 ADA Standards require the bottom edge of the reflecting surface at 40 inches maximum above the finished floor over a lavatory or counter, and 35 inches maximum where the mirror is not over one (section 603.3, U.S. Access Board guide). A 34 inch rim with a 4 inch splash leaves a 2 inch gap.
Specify a mirror with no bottom frame or use a tilt mirror. Keep the top edge at 74 inches or higher so standing users are served too.
Electrical. Hardwired LED mirrors need a 4 inch square box at the mirror center, usually 60 inches AFF, on a switched circuit; some allow a dimmer, so check the spec sheet. Sconce boxes at 60 to 66 inches AFF, 2 to 6 inches outside the mirror edge. On a double with two mirrors, the center sconce box sits on the vanity centerline.
Mounting. LED mirrors ship with a cleat or keyhole plate; plain frameless mirrors use J-channel and clips. On tile, drill with a diamond bit and use anchors rated for the weight; a 60 by 28 inch LED mirror weighs 40 to 50 pounds. On drywall, hit a stud or use 50 pound toggle anchors.
Medicine cabinets. Recessed units need a 14.5 inch clear bay between studs, 4 inches deep, free of plumbing and wiring; frame a header and sill at the finished opening before drywall. Surface mount units need blocking or two studs.
Spec packages. For multi-unit work, pick one LED family that spans several widths, like the Luster (24 to 60 inches), so every bath matches. For public restrooms the commercial restroom vanity guide covers the full accessibility set.
The 48 inch vanity got a 36 inch mirror with its center at 60 inches, and the sconces went back on the wall 4 inches off each edge. Same vanity, same lights, and the room finally looked finished. The 22 inch mirror went in the hallway, where it's actually the right size.
Free download: the Bathroom Vanity Measuring Worksheet
Four page PDF with the room and plumbing measurements that decide whether a vanity fits, plus a free fit check from KBF when you send us your numbers.
Frequently asked questions
What size mirror should I get for a 36 inch vanity?
A 26 to 30 inch wide mirror covers the 70 to 80 percent rule, and a 36 inch mirror gives the full width look. Pick 30 to 36 inches tall so the center lands at eye level. Never go wider than the vanity.
How high should a bathroom mirror be hung?
Center the mirror 57 to 65 inches above the floor, and keep the bottom edge 4 to 8 inches above the backsplash. With a 36 inch vanity and a 4 inch backsplash, the bottom edge sits at 44 to 48 inches. Taller mirrors make both rules easier to meet.
Should the bathroom mirror be wider than the vanity?
No. The mirror should be the same width as the vanity or narrower, and 70 to 80 percent is the standard proportion. A mirror wider than the cabinet looks top heavy and leaves no room for sconces.
Should the mirror match the vanity or the faucet?
Match the mirror frame to the faucet and the cabinet pulls. The cabinet colour can be different; warm wood with brass hardware takes a brass frame, and grey or white with chrome takes a chrome, nickel or black frame. Frameless LED mirrors go with everything.
Can I use one mirror over a double vanity?
Yes. One mirror at 80 to 100 percent of the vanity width is the hotel look and is easier to light. Use two mirrors, each 40 to 50 percent of the width and centered on its sink, when two people use the bath at the same time.
Do LED mirrors need an electrician?
Most LED mirrors are hardwired to a junction box behind the mirror, so yes, unless a box is already there. Some plug in models exist but the cord shows. Budget for a box at the mirror center on a switched circuit during the remodel.
Call 657-279-8130 or visit the KBF showroom in Anaheim, CA. We ship to the lower 48 states.
Browse the full mirror collection, then pick the cabinet from floating vanities or freestanding vanities.
