Picture Frame Size Guide
Picture Frame Size Guide (Complete Size & Conversion Charts)
Choosing the correct picture frame size is essential for achieving a professional, balanced look. Whether you’re framing family photos, artwork, or posters, understanding standard frame sizes and metric conversions helps you avoid costly mistakes.
This Picture Frame Size Guide covers:
Standard picture frame sizes
Poster frame sizes
Mounting size recommendations
Inches to cm conversion charts
Tips for choosing the right frame
Why Picture Frame Size Matters
Selecting the correct frame size ensures:
Proper artwork fit
Balanced wall proportions
Professional presentation
Reduced risk of bending or warping
Easier installation
Whether you’re framing a movie poster like The Dark Knight or an art print inspired by Pablo Picasso, accurate sizing makes all the difference.
Standard Picture Frame Sizes (Inches & CM)
Below are the most common frame sizes used for photos and art prints.
Picture Frame Size Guide
Small Picture Frame Sizes
| Inches | Centimetres (CM) |
|---|---|
| 4 x 6 | 10.16 x 15.24 cm |
| 5 x 7 | 12.7 x 17.78 cm |
| 8 x 10 | 20.32 x 25.4 cm |
These are ideal for:
Family photos
Desk displays
Small wall arrangements
Medium Picture Frame Sizes
| Inches | Centimetres (CM) |
|---|---|
| 11 x 14 | 27.94 x 35.56 cm |
| 12 x 16 | 30.48 x 40.64 cm |
| 16 x 20 | 40.64 x 50.8 cm |
Perfect for:
Portrait photography
Art prints
Gallery walls
Large Picture & Poster Frame Sizes
| Inches | Centimetres (CM) |
|---|---|
| 18 x 24 | 45.72 x 60.96 cm |
| 24 x 36 | 60.96 x 91.44 cm |
| 27 x 40 | 68.58 x 101.6 cm |
These sizes are common for:
Movie posters
Promotional prints
Statement wall art
The 27 x 40 size is the standard U.S. movie poster dimension.
A-Series Paper & Frame Sizes (International Standard)
If you’re outside the U.S., you may use ISO A-sizes.
| Size | Millimetres (MM) | Inches |
|---|---|---|
| A5 | 148 x 210 mm | 5.8 x 8.3 in |
| A4 | 210 x 297 mm | 8.3 x 11.7 in |
| A3 | 297 x 420 mm | 11.7 x 16.5 in |
| A2 | 420 x 594 mm | 16.5 x 23.4 in |
| A1 | 594 x 841 mm | 23.4 x 33.1 in |
A4 and A3 are particularly popular for art prints and certificates.
Picture Frame Size Conversion Chart (Quick Reference)
Inches to Centimetres
| Inches | CM |
|---|---|
| 8 in | 20.32 cm |
| 12 in | 30.48 cm |
| 16 in | 40.64 cm |
| 20 in | 50.8 cm |
| 24 in | 60.96 cm |
| 36 in | 91.44 cm |
Use the interactive converter above to calculate any custom measurement instantly.
Choosing the Right Frame Size With a Mount
Using a mount increases the overall frame size while keeping your artwork cantered.
Example:
Artwork size: 10 x 8 inches
Add 1-inch mount border
Final frame size: 12 x 10 inches
Standard Mount Size Guide
| Artwork Size | With Mount | Frame Size Needed |
|---|---|---|
| 8 x 10 | 12×10 | 12×10 frame |
| 16×12 | 16 x 20 | 16 x 20 frame |
| 20×16 | 24×20 | 24×20 frame |
Mounts add visual breathing space and elevate presentation.
How to Measure Artwork for the Correct Frame
Follow these steps:
Measure width and height of the artwork only
Do not include white borders unless you want them visible
Decide if you’ll use a mount
Choose a frame that matches the final outer dimensions
Always measure twice before purchasing.
Common Frame Size Mistakes to Avoid
Buying a frame that matches paper size instead of artwork size
Forgetting to account for mat borders
Ignoring depth for canvas prints
Mixing metric and imperial measurements
Double-check units before ordering online.
Custom Frame Sizes
If your artwork doesn’t fit standard dimensions:
Consider custom framing
Order made-to-measure frames
Use a larger frame with custom matting
Custom framing is ideal for limited edition prints or sentimental artwork.
What Is the Most Popular Picture Frame Size?
The most commonly purchased sizes are:
8 x 10 inches
11 x 14 inches
16 x 20 inches
24 x 36 inches (poster size)
These cover most photography, art prints, and posters.
Final Thoughts: Choosing the Right Picture Frame Size
Understanding picture frame sizes and conversions helps you:
Avoid returns
Protect your artwork
Achieve professional results
Create balanced wall displays
Whether you’re framing personal photos or large-format prints like posters from Avengers: Endgame, accurate sizing ensures a flawless finish.
