Sizing the Mirror Above Your Bathroom Vanity

Updated on April 13, 2019
This mirror perfectly mirrors the basin below it.
This mirror perfectly mirrors the basin below it. | Source

No bathroom is complete without a mirror for visual effect. The mirror plays a key part in our daily grooming like shaving, applying makeup, and styling our hair, and it is one of the last things we look at before going out.

Getting the right one to suit our needs is an art in itself. Here is a quick guide to help you choose the right-sized mirror for your bathroom.

Filling the wall behind the sink with mirror is an old trick for making the room feel bigger.
Filling the wall behind the sink with mirror is an old trick for making the room feel bigger. | Source

What Size Mirror Should I Hang Over the Sink?

The mirror's size is usually determined by the length of your vanity's countertop. Designers usually choose mirrors that are 2 to 4 inches narrower than the vanity (which consists of the sink, its counter, and its surrounding storage).

Of course, the size of the vanity depends on the size of the bathroom. Large master bathrooms will often utilize a double-sink vanity, while in smaller powder rooms, a single vanity is more fitting. Narrow vanities are best suited for small bathrooms and usually consist of a sink only. A large bathroom space can consist of a single or double vanity that can occupy the whole length of the wall. A double vanity comes with two sinks, a counter, and storage underneath.

One can choose to run the mirror along the entire length of the vanity or just span the length of the sink basin.

The mirror should be centered above the basin and measure a couple inches less than the vanity or sink area.

Today's mirrors employ new technology: This one has a built-in mirror.
Today's mirrors employ new technology: This one has a built-in mirror. | Source

Measure Your Space

  • Take measurements of either the sink or the entire vanity and write them down. Don't forget to write down the height of the wall where you'll hang the mirror. As a rule, the mirror should measure several inches less than the vanity or sink area.
  • For example, if you've chosen a 48" single sink vanity, you will want to select a mirror that's width (frame included) doesn't exceed 48 inches. To make sure the mirror doesn't overpower the room, aim for 42-44 inches total.
  • Some people may choose a mirror that goes to the very edge of the vanity. This is okay, but you do not want it to exceed the width of the vanity.
  • Center the mirror directly above the sink.

Designer tip: Choose your vanity first. It is much easier to find a mirror to match a vanity than the other way around!

How High Should I Hang My Mirror?

Think about who will be using the mirror and take each user's height into consideration. The average woman is 5'5" and the average man is 5'10", so use that as a guideline. If there are kids in the household, take them into consideration, as well. If most household members are taller than average, then hang it higher—but hang it lower for shorter people.

Remember to take lighting and other fixtures into consideration. If you plan on using wall lights or sconces, factor that in when taking measurements. If you plan on having a shelf or a wall-mounted toothbrush holder, keep this in mind when you're measuring the space.

Wood adds warmth to stark white surroundings. The unusual shape of this mirror makes a playful statement.
Wood adds warmth to stark white surroundings. The unusual shape of this mirror makes a playful statement. | Source

Which Shape of Mirror Looks Best?

Mirrors come in all shapes, finishes, and sizes. As they say, your imagination is the only limit.

  • More traditional remodelers may choose something rectangular or oval with a style that matches the rest of the room.
  • You can have mirrors cut or built-in to fit perfectly into the space, utilizing the same molding or surrounding tile for a custom look.
  • Modern homeowners will likely choose something sleek and minimal (maybe even frameless) and may opt for new technologies, like built-in lights or even mirrors that display the day's weather forecast.
  • Creative types might choose a funky color or ornate shape to add interest and whimsy to their remodel.
  • Frame or no frame? Frameless mirrors are a sleek design option if you don't want a heavy border around the reflection.

Your main concern will be that whatever shape or size you choose fits well with the dimensions available above your vanity.

This beveled glass fits in perfectly into its Asian-themed setting.
This beveled glass fits in perfectly into its Asian-themed setting. | Source

Does the Mirror Have to Hang Above the Basin?

Quick answer: Um, no.

Long answer: The spot over the basin is best for pragmatic reasons. That's where you'll want to look at your reflection when you're brushing your teeth, etc. But if you can't hang it there for some reason, it's not the end of the world. You may keep trying to find your reflection where it isn't, but after a while, you'll learn to accept your mirror's unusual placement.

Consider Placement and Lighting (Natural or Not)

The size of the mirror you install should conform to the size of your bathroom as well as the placement of the bathroom window. This is important in ensuring that the mirror reflects as much natural light as possible for a better visual effect.

  • To maximize natural light, especially if the bathroom window is large enough, the mirror should be placed opposite the window, if possible.
  • For bathrooms with small windows that may not bring in much natural light, you may need to install a light above (or sconces beside) the mirror.
  • If there is no window, choosing the right lighting is critical; too much light will cause a glare and too little will leave you squinting to see your own face.

Another important factor is the color of the bathroom. White is the easiest color to work with, as it always reflects flattering light. If you choose a color, be forewarned that it will affect your appearance in the mirror, so make sure you choose one that's flattering.

Magic mirror: modern technology allows this mirror to show you much more than just your reflection.
Magic mirror: modern technology allows this mirror to show you much more than just your reflection. | Source

Mounting Securely

For those using a large mirror over a large double vanity, or if you choose one with a heavy, ornate frame, you'll want to be sure to use a stud finder and attach mounting brackets directly into a wood stud (not just into the soft plaster) in your wall. If no studs are available in the place you want to hang your mirror, check out your local department store for EZ anchors, which are rated for the weight of your mirror. See the video below for other helpful tips on hanging heavy mirrors.

This porthole-shaped mirror gives the bathroom a nautical feel. Its circular shape accentuates the circles in its vicinity.
This porthole-shaped mirror gives the bathroom a nautical feel. Its circular shape accentuates the circles in its vicinity. | Source

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.


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    • profile image


      7 weeks ago

      I'm looking for a framed/unframed, inexpensive, rectangular vanity mirror. My vanity is 70" wide but I want a mirror that measures 60/62". I haven't had any luck in finding one. Will I have to have a mirror customed cut?

    • profile image


      7 weeks ago

      i have a 49 inch vanity. want to hang a round mirror. what size should i go with?

    • profile image


      2 months ago

      What size mirror should I use over single sink 60 inch vanity width and height

    • profile image


      8 months ago

      My vanity sits within two walls 90" apart, my vanity is 65" long. Do i center my mirror over the vanity or center within the wall space?

    • profile image


      12 months ago

      With a 66” vanity, what’s the max height to look good, they are 24” wide

    • profile image


      13 months ago

      I have a 66 in. Vanity, what size mirror should I put above each one

    • profile image


      14 months ago

      I have an 88 inch vanity with 2 double sinks. Height is 61 inches. What is the best size mirrors to place over both sinks?

      Thank you.

    • profile image


      14 months ago

      I have a 66”double sink vanity. I have a 28” space for height. Can I put a 28” diameter mirror above each sink. There would only be about 4” between the mirrors. There would be 3” space on each end of vanity

    • profile image

      Debby B 

      14 months ago

      I have a 96 1/2" wide; 40 1/2" to the top of my quartz back splash vanity.

      The 2 sinks are 8" from the end and 4 ft. apart. Two mirrors look bad. they are too far apart (4 feet).

      I will have 56 inches for one mirror with 2 lights centered above the sinks. My ceiling is 8 ft.

      With leaving 56" high and 96 1/2" wide...

      What size should one large mirror be?

      How many in. above back splash?

      How many inches in from the end of the vanity?

      How should the lights be spaced above the mirror and below the 8 ft. ceiling?

      Two lights will be centered above the sinks.

    • profile image

      Anne M 

      16 months ago

      I have a 74 inch vanity with a single sink.

      There is an electric plug measures 7 inches from quartz lip above vanity close to sink.

      What size mirror do you recommend?

      The top of my cabinets to vanity is 57 inches.

    • profile image

      Kathie Wills 

      17 months ago

      I have an 8 foot vanity with double sinks. How large should the mirrors be?

    • profile image

      Beth Geller 

      17 months ago

      If I have a 72" vanity with two double sinks (16-17" wide) and want to use two mirrors, mounted above each sink which size should they be? I was thinking of 2- 24"x30" recessed mirrors.

    • profile image


      18 months ago

      I have a 35” countertop over a 34” vanity with a centered sink. My vanity is 36” tall, with a 8” faucet clearance. What size Medicine cabinet should I use?

    • profile image

      Madeline GAines 

      19 months ago

      I have a 48 in vanity, how large should my mirrow be and how wide should my vanity light be?

    • profile image

      Judy Gottesfeld 

      19 months ago

      I have a 5 foot vanity with two sinks I bought two mirrors 26 inches each. Should a use a two light vanity light 17 inch or 3 lights 28 inches

    • profile image


      22 months ago

      We have a single sink 60in vanity. i need to install th

      alight above the single 48" mirror . what size should the light be


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