Direct fit
Match the label to the artwork size when you do not want a mat, for example an 8 × 10 in frame for an 8 × 10 in print.
Inches to centimeters
Standard picture frame sizes in centimeters
Standard frame sizes are defined in inches. Convert each one to exact centimeters and see which metric labels match.
Standard sizes
Standard frame sizes: inches to centimeters
Each inch dimension multiplied by 2.54 gives the exact centimetre size. Retail metric labels are rounded, so they rarely match exactly.
| Standard size (in) | Exact size (cm) | Typical use |
|---|---|---|
| 4 × 6 in | 10.16 × 15.24 cm | Snapshots and everyday prints |
| 5 × 7 in | 12.70 × 17.78 cm | Desk portraits |
| 8 × 10 in | 20.32 × 25.40 cm | Classic portraits and mats |
| 11 × 14 in | 27.94 × 35.56 cm | Medium wall art |
| 12 × 12 in | 30.48 × 30.48 cm | Square keepsakes |
| 12 × 16 in | 30.48 × 40.64 cm | Photographic prints |
| 16 × 20 in | 40.64 × 50.80 cm | Statement portraits |
| 18 × 24 in | 45.72 × 60.96 cm | Posters and art prints |
| 20 × 24 in | 50.80 × 60.96 cm | Large portraits |
| 24 × 30 in | 60.96 × 76.20 cm | Large wall art |
| 24 × 36 in | 60.96 × 91.44 cm | Full-size posters |
| 30 × 40 in | 76.20 × 101.60 cm | Large display pieces |
Metric labels
Common metric frame sizes for reference
In metric regions, frames are labelled with rounded centimetre sizes. The inch column shows the approximate equivalent.
| Metric frame (cm) | Approximate inches | Typical use |
|---|---|---|
| 10 × 15 cm | 3.9 × 5.9 in | Standard snapshots |
| 13 × 18 cm | 5.1 × 7.1 in | Small portraits |
| 15 × 20 cm | 5.9 × 7.9 in | Desk and shelf frames |
| 20 × 25 cm | 7.9 × 9.8 in | Classic portraits |
| 21 × 30 cm | 8.3 × 11.8 in | Documents and A4 prints |
| 30 × 40 cm | 11.8 × 15.7 in | Gallery-wall prints |
| 40 × 50 cm | 15.7 × 19.7 in | Large portraits |
| 50 × 70 cm | 19.7 × 27.6 in | Posters and art prints |
Exact conversion
How the conversion works
Multiply each inch dimension by 2.54 to get the exact size in centimeters. Retail labels are rounded, so confirm the usable opening before ordering.
1 inch = 2.54 centimeters8 × 10 in = 20.32 × 25.40 cm
Choose well
Choosing a frame from converted sizes
A frame label describes what fits inside, not the outside edge. Decide which layer you are matching before ordering.
Matted
Choose one or two sizes larger so the mat can overlap the artwork by 3–6 mm on each edge.
Aspect ratio
Check proportions before matching: a 4 × 6 photo has a different shape from an 8 × 10 frame and needs a mat or cropping.
Standard size answers
Standard frame sizes in cm FAQ
What size is a 4 × 6 inch frame in centimeters?
4 × 6 inches is exactly 10.16 × 15.24 cm. Retail metric labels often round this to 10 × 15 cm.
What is an 8 × 10 inch frame in centimeters?
8 × 10 inches converts to exactly 20.32 × 25.40 cm, often labelled 20 × 25 cm in metric regions.
What is a 16 × 20 inch frame in centimeters?
16 × 20 inches is exactly 40.64 × 50.80 cm, close to the metric label 40 × 50 cm.
What are the most common standard frame sizes in centimeters?
Converted from inches, the most common standards are 4 × 6 (10.16 × 15.24 cm), 5 × 7 (12.70 × 17.78 cm), 8 × 10 (20.32 × 25.40 cm), 11 × 14 (27.94 × 35.56 cm), and 16 × 20 (40.64 × 50.80 cm).
How do you convert frame sizes from inches to centimeters?
Multiply each inch dimension by 2.54. For example, 8 × 10 in becomes 20.32 × 25.40 cm. To convert back, divide centimeters by 2.54.