Ceiling Height Proportion Calculator
Get proportionally correct crown molding, artwork, furniture, and curtain rod heights based on your ceiling height and room dimensions.
Inputs
Results
Crown Molding Height
9 in
≈ 3 credit cards
Curtain Rod Height
103 in
≈ 17 smartphones
How to Use This Calculator
- Enter Ceiling Height, Room Width, and Room Length.
- Review Crown Molding Height and Curtain Rod Height.
- Use Artwork Max Height (in) and Furniture Max Height (in) to inform your decision.
How the result changes with Ceiling Height
| Ceiling Height | Crown Molding Height | Curtain Rod Height |
|---|---|---|
| 8.3 | 8.3 in | 94.6 in |
| 12 | 12 in | 122 in |
| 15 | 15 in | 153 in |
| 19 | 19 in | 194 in |
What each input means
- Ceiling Height
- Floor-to-ceiling height in feet.
- Room Width
- Shorter horizontal dimension of the room.
- Room Length
- Longer horizontal dimension of the room.
What each result means
- Crown Molding Height
- Recommended crown molding profile height (~1 inch per foot of ceiling).
- Artwork Max Height
- Tallest recommended artwork dimension for balanced proportions.
- Furniture Max Height
- Tallest furniture piece (bookcases, armoires) that suits the ceiling.
- Curtain Rod Height
- Mount height from floor for curtain rods (measured in inches).
- Width-to-Height Ratio
- Room width vs ceiling height. Ideal range: 1.2:1 to 2:1.
How this is calculated
Worked example, using the default values
- Identify Input ParametersCeiling Height = 9, Room Width = 12, Room Length = 16 = 3 input(s) provided
- Calculate Crown Molding HeightCrown Molding Height9 = 9
- Calculate Curtain Rod Height103 = 103
- Calculate Artwork Max HeightArtwork Max Height59 = 59
- Calculate Furniture Max HeightFurniture Max Height81 = 81
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