10% for a simple square room, 15-20% for lots of corners and miters
Crown Molding Estimate
Estimated Total Cost
$89 – $178
54 linear ft of paint-grade mdf (5 sticks)
12,800+ estimates calculated this month
Last updated: 2026-07-07
Quick Answer: How Much Crown Molding Do I Need?
Measure the room perimeter with 2 x (length + width), then add 10% for waste. A 15 ft by 12 ft room is a 54 ft perimeter, about 60 linear feet with waste, or 5 twelve-foot sticks. In paint-grade MDF that is roughly $90-$180 in material before labor. Use the calculator above to get exact sticks and cost for your room and molding type.
Inputs You'll Need
- Room length and width in feet, so the calculator can run the ceiling perimeter.
- Molding material, since paint-grade MDF and stain-grade oak are five or six times apart on price.
- Stock length you plan to buy: 8, 12, or 16 foot sticks.
- Waste factor, 10% for a square room or 15-20% for lots of corners.
- Install rate if you want labor rolled in, usually $2-$5 per linear foot.
Crown Molding Cost by Material
| Material | Cost per Linear Foot | Best Use |
|---|---|---|
| Paint-grade MDF | $1.50-$3.00 | Painted rooms, budget jobs |
| Finger-joint pine | $2.25-$4.50 | Painted, slightly more durable |
| Polyurethane | $5.00-$9.00 | Bathrooms, flexible for curves |
| Solid poplar | $4.00-$7.00 | Painted, takes a crisp profile |
| Solid oak / hardwood | $6.50-$12.00 | Stain-grade, natural wood look |
Add $2-$5 per linear foot for professional installation. Tall ceilings and lots of corners push toward the high end.
Crown Molding Needed by Room Size
These figures assume a rectangular room, a 10% waste factor, and 12 foot sticks. Material cost uses paint-grade MDF at $1.50-$3.00 per linear foot. Stain-grade or hardwood runs three to five times higher, and any labor is on top.
| Room Size | Ceiling Perimeter | Linear Ft (with 10% waste) | 12 ft Sticks | MDF Material Cost |
|---|---|---|---|---|
| 10 x 10 | 40 ft | 44 ft | 4 | $65-$130 |
| 12 x 12 | 48 ft | 53 ft | 5 | $80-$160 |
| 12 x 15 | 54 ft | 60 ft | 5 | $90-$180 |
| 15 x 20 | 70 ft | 77 ft | 7 | $115-$230 |
| 20 x 20 | 80 ft | 88 ft | 8 | $130-$265 |
Two Worked Examples
Example 1: 12 x 12 bedroom, paint-grade MDF, DIY.
- Perimeter: 2 x (12 + 12) = 48 linear feet.
- Add 10% waste: 48 x 1.10 = 52.8, so order 53 linear feet.
- Sticks: 53 / 12 = 4.4, round up to 5 twelve-foot sticks (60 ft on hand).
- Material: 60 ft x $2.25 MDF = about $135. Four coped inside corners, no labor since you are hanging it yourself.
Example 2: 15 x 20 living room, stain-grade oak, hired out.
- Perimeter: 2 x (15 + 20) = 70 linear feet.
- Bump waste to 15% on stain-grade because a blown miter is expensive: 70 x 1.15 = 80.5, order 81 linear feet.
- Sticks: buy 16 ft lengths to cut seams. 81 / 16 = 5.06, round up to 6 sixteen-foot sticks.
- Material: about 96 ft of oak at $9 = roughly $865. Install at $4 per linear foot on the 70 ft run is $280, so the job lands near $1,145 before markup.
Where Crown Molding Jobs Go Wrong
- Buying by the foot instead of by the stick. You cannot splice a 3 ft offcut into the middle of a wall and have it look right. Order full sticks and round up. One spare stick beats a second trip to the lumber yard.
- Skimping on waste. Coped inside corners and miter mistakes burn material fast. I have watched a clean 10% turn into 18% real quick on a room with five corners. Add the waste up front.
- Mixing lots. Crown from two different runs can vary in profile and color. Buy what you need for the room in one purchase so every joint matches.
- Forgetting ceiling height in the labor number. Crown that goes up on a 12 ft ceiling takes longer and needs more setup than the same run at 8 ft. Price the labor for the actual reach, not the easy room.
- Measuring walls instead of the perimeter. Add every wall, or just run 2 x (length + width) for a rectangular room. Missing one short wall is how you end up a stick short on install day.
Related Calculators
- Baseboard & Trim Calculator - Linear feet and cost for base and casing on the same room.
- Lumber Calculator - Board counts and linear feet for framing and carpentry.
- Feet and Inches Calculator - Add and subtract measurements without the on-site math mistakes.
- Paint Calculator - Gallons and cost to finish the room after the trim goes up.
If you are a contractor pricing trim and finish carpentry for clients, try EstimationPro free. It builds the full estimate, sends the proposal automatically, and follows up with the homeowner so you win more of the bids you already send, then turns the approved job into an invoice when the work is done.
How to Use This Calculator
Pick your molding material
Choose paint-grade MDF, finger-joint pine, polyurethane, poplar, or solid oak. Each carries a different per-linear-foot price, from about $1.50 for MDF up to $12 for hardwood.
Enter the room length and width
Put in the room dimensions in feet. The calculator finds the perimeter as 2 times length plus width, which is the run of crown you need around the ceiling.
Set your stock length and waste
Crown ships in 8, 12, and 16 foot sticks. Add 10% waste for a square room or 15-20% when there are a lot of corners and miters to cut.
Review pieces and cost
See total linear feet, how many sticks to buy, inside corner count, and a material cost range. Turn on installation to add $2 to $5 per linear foot of labor.
Crown Molding Formulas
Perimeter (linear ft) = 2 x (Length + Width)
With Waste = Perimeter x (1 + Waste% / 100)
Sticks Needed = ceil(With Waste / Stock Length)
Material Cost = With Waste x Price per linear ftWhere:
- Length, Width
- = Room dimensions in feet
- Waste%
- = Overage for cuts and miters, usually 10-20%
- Stock Length
- = Length of each stick: 8, 12, or 16 ft
- Price per linear ft
- = Material cost by molding type, $1.50-$12.00
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Frequently Asked Questions
How much crown molding do I need for a room?
Measure the room perimeter: 2 x (length + width). A 15 ft by 12 ft room has a 54 ft perimeter. Add 10% for waste and you are at about 60 linear feet, which is 5 twelve-foot sticks. Always round up to full sticks because you cannot splice a corner cleanly from a short offcut.
How many sticks of crown molding should I buy?
Divide your total linear feet (with waste) by the stock length and round up. For 60 linear feet in 12 ft sticks: 60 / 12 = 5 sticks. Buy from one lot when you can so the profile and color match across the whole room.
How much does crown molding cost per linear foot?
Material runs about $1.50-$3.00/lf for paint-grade MDF, $2.25-$4.50 for finger-joint pine, and $6.50-$12 for solid oak. Professional installation adds $2-$5 per linear foot depending on ceiling height and how many corners are involved.
How do contractors price a crown molding job for a client?
I price it by the linear foot: material plus labor, then add my markup. A 54 ft room in painted MDF with install lands around $300-$500 installed. Run the numbers with the Baseboard & Trim Calculator too, since most rooms get crown and base on the same visit and you want one clean number for the homeowner.
How much extra crown molding should I add for waste?
Use 10% for a simple rectangular room. Bump it to 15-20% for rooms with bay windows, lots of inside and outside corners, or short walls where every cut leaves a scrap you cannot reuse. Coped inside corners eat material faster than you would expect.
How many inside corners does a typical room have?
A plain rectangular room has 4 inside corners. Each corner is either a coped joint or a 45 degree miter, and each one is a spot where a cut can go wrong, so order a spare stick on bigger jobs.
How much crown molding do I need for a 12x12 room?
A 12 ft by 12 ft room has a 48 ft perimeter. Add 10% for waste and you land near 53 linear feet, which rounds up to 5 twelve-foot sticks. In paint-grade MDF that is about $80-$160 in material before labor. The room-size table above lists common dimensions so you do not have to run the math by hand.
What lengths does crown molding come in?
Most crown ships in 8, 12, and 16 foot sticks. Buy the longest length that fits your walls so you have fewer seams to scarf-joint. A 16 ft stick runs a long living-room wall in one piece, while 8 ft sticks are easier to haul and handle in a small bathroom or hallway.
What angle do you cut crown molding corners?
Outside corners get a 45 degree miter. Inside corners are best coped: cut the first piece square into the corner, then coping-saw the profile of the second piece to sit tight against it. Coped joints stay closed when the framing moves, which a straight 45 inside miter will not. Most US crown sits at a 38 or 45 degree spring angle, so set your saw for the profile you bought.
How long does it take a contractor to install crown molding in a room?
A clean rectangular room runs about 3 to 5 hours for one experienced finish carpenter, longer on tall ceilings or with lots of corners. I price the labor by the linear foot, usually $2-$5, and fold it into the bid with material and markup. If you quote trim work for clients, the contractor estimate template keeps the crown, base, and casing on one line-item sheet the homeowner can actually read.
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