Mirror Cost Calculator

What a mirror quote is made of

A mirror is glass with a silver coating, and glass is sold by area. That makes the first line of any quote simple: width times height in inches, divided by 144, gives square feet. Everything after that line is where quotes drift apart. Edge work is priced by the running foot, holes by the hole, safety backing by the square foot, and installation by the hour or by the job.

This calculator adds those lines up for one panel or a wall of panels. It handles a 36 by 48 inch bathroom vanity mirror, a 48 by 96 inch gym panel repeated four times, and the odd sizes in between. Set the waste allowance to zero for a shop cut panel and to 10 or 15 percent when you buy a sheet and cut it yourself.

One warning before the numbers: a mirror is heavy and brittle, and the glass you save by shopping on price alone can cost more in one cracked panel than the difference in the quote.

The cost formula, term by term

Area per panel = width in inches x height in inches / 144. A 36 by 48 inch mirror is 1,728 square inches, which is 12 square feet. For four panels of the same size, multiply by four.

Purchased area = area x (1 + waste). Waste covers the offcut when a shop or a homeowner cuts from a larger sheet: 10 percent on a simple rectangle, 15 percent on a shape with curves or a diagonal. A glass shop that cuts to your size charges the finished area, so set waste to 0 there.

Glass cost = purchased area x price per square foot. Edge work = perimeter in linear feet x rate per foot, where perimeter = 2 x (width + height) / 12. A 36 by 48 inch panel has 14 linear feet of edge. Holes are priced each, typically where a mirror needs standoffs, pivot hardware or a medicine cabinet mount.

Then come the adders: safety backing or a safety film on the back, a frame if you want one, installation labor, and delivery or crating. Total = glass + edge + holes + safety backing + frame + labor + delivery. Divide the total by the panel area and you get a real price per square foot, which is the only number worth comparing between two quotes.

Stock sizes versus custom cuts

Home centers stock a handful of sizes and sell them as kits with clips. A custom shop cuts to the sixteenth of an inch and prices by the square foot. The gap is not only money: a stock panel that is two inches short leaves a gap you will look at every morning.

Angi's 2026 cost data puts custom cut mirror material at $10 to $50 per square foot, with average project totals of $200 to $2,500. Small accent mirrors land near $40, mid size bathroom mirrors near $200, and 36 to 100 square foot installations near $1,200. Stock panels at a home center sit at the bottom of that range and come in far fewer sizes.

For a bathroom, the custom cut is usually worth it. A stock 36 by 48 panel over a 60 inch vanity leaves 24 inches of bare wall, and the mismatch is permanent. For a rental or a flip, the stock panel plus a frame is the cheaper call.

3/16 inch or 1/4 inch glass

Most residential mirrors are 3/16 inch (about 5 mm) or 1/4 inch (6 mm). The difference is weight and stiffness, not looks. Glass weighs about 13 pounds per square foot per inch of thickness, so 3/16 inch runs 2.45 pounds per square foot and 1/4 inch runs 3.27.

A 12 square foot bathroom mirror weighs 29.4 pounds in 3/16 inch and 39.2 pounds in 1/4 inch. Both hang on the same clips. Where thickness matters is span: a 48 by 96 inch panel in 3/16 inch flexes when you lean on it and shows a ripple in the reflection, so gym walls and large panels usually go to 1/4 inch. Small vanity mirrors do fine in 3/16 inch and cost less to ship.

Thickness does not change the price in this model; the per square foot input does. Shops quote 1/4 inch higher than 3/16 inch for the same cut, so enter the number from your own quote rather than a default.

When the law requires safety glass

Ordinary mirror glass is annealed, and annealed glass breaks into long shards. Safety glazing is built to break differently, and federal rules cover where it must be used. 16 CFR Part 1201, the CPSC standard for architectural glazing materials, sets two impact classes: Category I at 150 foot pounds, tested with a 100 pound bag dropped 18 inches, and Category II at 400 foot pounds, the same bag dropped 48 inches.

The categories attach to products, not to rooms. Category II covers shower doors and enclosures, bathtub doors and enclosures, sliding patio doors, and any door or storm door with a single glazing piece larger than 9 square feet. Category I covers doors and storm doors where no piece exceeds 9 square feet. A mirror set into a shower door, a mirrored closet door, or a mirror beside a door at hip height falls inside those definitions and has to carry the safety glazing.

A vanity mirror screwed to the wall above a sink is not a door or an enclosure, so Part 1201 does not require safety glass for it. Local building codes go further in some places: the IRC hazardous location rules used by most states require safety glazing within 24 inches of a door edge, in walls around tubs and showers, and in panels over 9 square feet whose bottom edge sits under 18 inches above the floor. Check the code your inspector enforces before you order a floor level mirror wall.

Two products solve the problem when safety glazing is required: laminated safety mirror, which holds together on a plastic interlayer, and standard mirror with a safety backing film glued to the back. The film adds about $1 to $2 per square foot and keeps shards attached to the backing after an impact. The CPSC's final rule on architectural glazing explains the test method and the Class A and Class B equivalents used by ANSI Z97.1.

Worked example: a 36 by 48 bathroom mirror

One panel, 36 by 48 inches, 3/16 inch glass, flat polished edge, four holes for clips, safety backing, professional install. Area is 12 square feet. With 10 percent waste the shop buys 13.2 square feet of glass at $12, which is $158.40.

Edge work is 14 linear feet at $2.50, or $35. Four holes at $8 add $32, safety backing at $1.50 per square foot adds $18, delivery is $60, and two hours of installation at $75 an hour is $150. Total: $453.40, or $37.78 per square foot of finished mirror. The panel weighs 29.4 pounds.

The same inputs, scaled to the four sizes people order most, show why small mirrors are the worst deal per square foot:

Each row carries the same $150 of labor and $60 of delivery, so the price per square foot falls from $59.20 on the small panel to $24.14 on the large one. Glass and edge work scale with size; the trip to your house does not.

Same mirror, three variations. Hang it yourself with clips and the total falls to $303.40. Have the shop cut to exact size and set waste to 0, and the glass line drops to $144, for $439 installed. Order it in 1/4 inch glass and the price holds at $439 to $453 while the weight rises to 39.2 pounds, which is the point where one person on a step stool starts to struggle.

Worked example: an 8 foot gym mirror wall

A home gym wall 8 feet high and 16 feet wide takes four panels of 48 by 96 inches. Each panel is 32 square feet, so the wall is 128 square feet. At 1/4 inch and $14 per square foot with no waste, since the panels come cut to size, glass is $1,792.

Edge work runs 24 linear feet per panel, 96 feet total, at $2.50 for $240. Safety backing on 128 square feet adds $192. There are no drilled holes because the panels sit in a J-channel with clips. Professional installation of a wall this size runs $900, inside the $700 to $2,000 range Angi reports for wall to wall and gym mirrors in 2026, and freight on four crated panels is $150. Total: $3,274, or $25.58 per square foot. The wall weighs 418.6 pounds.

The per square foot price fell from $37.78 on the bathroom mirror to $25.58 here, even with 1/4 inch glass, because the fixed costs (delivery, one trip, one crew) spread over ten times the area. That is the pattern to remember: small mirrors are dominated by labor and delivery, large walls by glass.

DIY or an installer, and what quotes leave out

Angi's 2026 installation data puts mirror labor at $50 to $100 per hour, with an average installation project at $313 and a range of $159 to $487. That average covers a small bathroom mirror. A 12 square foot panel with clips is a two hour job for one person; a 128 square foot gym wall is a crew, a laser level and a day.

Four things sit outside most quotes. Wall repair behind the old mirror, which is often glue covered drywall that has to be skimmed. Outlet or light fixture moves, which need an electrician. Disposal of the old mirror, which is not recyclable in most curbside programs and has to be crated and hauled. And the second trip when a panel arrives chipped, which is common on anything over 40 square feet.

Ask for the quote split by glass, edge, hardware, labor and delivery. A single lump sum hides which line is padded, and the split is also what you need if you decide to hang it yourself after the glass arrives.