Are you looking for standard picture frame sizes in cm? Or standard photo frame sizes in inches?
To help you with choosing the right picture frame or photo frame for your photos or artworks, we're created these helpful reference tables below. These will convert popular poster frames sizes into centimeters and also standard picture frame and photo frame sizes from inches into centimeters.
Standard Picture Frame Sizes
| inches | exact photo size in cm | similar metric size |
| 2.5 x 3.5 | 6.4 x 8.8 cm | 6 x 9 cm |
| 4 x 6 | 10.2 x 15.2 cm | 10 x 15 cm |
| 5 x 7 | 12.7 x 17.8 cm | 13 x 18 cm |
| 6 x 8 | 15.2 x 20.3 cm | 15 x 20 cm |
| 8 x 10 | 20.3 x 25.4 cm | 20 x 25 cm |
| 8 x 12 | 20.3 x 30.5 cm | 20 x 30 cm |
| 10 x 12 | 25.4 x 30.5 cm | 25 x 30 cm |
| 11 x 14 | 27.9 x 35.5 cm | 28 x 35 cm |
| 12 x 16 | 30.5 x 40.6 cm | 30 x 40 cm |
| 12 x 18 | 30.5 x 45.7 cm | 30 x 46 cm |
| 16 x 20 | 40.6 x 50.8 cm | 40 x 50 cm |
| 16 x 22 | 40.6 x 55.9 cm | 40 x 60 cm |
| 16 x 24 | 40.6 x 60.9 cm | 40 x 61 cm |
| 20 x 24 | 50.8 x 60.9 cm | 50 x 61 cm |
| 20 x 28 | 50.8 x 71.1 cm | 50 x 70 cm |
| 20 x 30 | 50.8 x 76.2 cm | 50 x 76 cm |
| 24 x 36 | 60.9 x 91.4 cm | 61 x 91 cm |
Standard Square Picture Frame Sizes
| inches | exact photo size in cm | similar metric size |
| 3 x 3 | 7.6 x 7.6 cm | 8 x 8 cm |
| 4 x 4 | 10.2 x 10.2 cm | 10 x10 cm |
| 5 x 5 | 12.7 x 12.7 cm | 13 x 13 cm |
| 6 x 6 | 15.2 x 15.2 cm | 15 x 15 cm |
| 7 x 7 | 17.8 x 17.8 cm | 17 x 17 cm |
| 8 x 8 | 20.3 x 20.3 cm | 20 x 20 cm |
| 10 x 10 | 25.4 x 25.4 cm | 25 x 25 cm |
| 12 x 12 | 30.5 x 30.5 cm | 30 x 30 cm |
| 14 x 14 | 35.5 x 35.5 cm | 35 x 35 cm |
| 16 x 16 | 40.6 x 40.6 cm | 40 x 40 cm |
| 20 x 20 | 50.8 x 50.8 cm | 50 x 50 cm |
| 24 x 24 | 60.9 x 60.9 cm | 61 x 61 cm |
Standard Frame Size Comparision Chart
We've created this helpful reference picture frame size diagram below, to help you compare popular frame sizes and how big these might look on your wall. This wall frame diagram also demonstrates popular sizes that are in relative proportion and ratio for scaling as well.
What are the Most Common Standard Picture Frame Sizes?
There's a wide variety picture frames and photo frames to suit different styles artworks and images.
For photography, the most common sizes of photos are 4x6", 5x7", 8x10" and 16x20". Depending on if you want a matboard border around the photo, the frame size can become bigger because of this.
For artworks, in Australia the most common sizes are A4, A3, and A2 to suit these popular paper sizes, which are also popular printing sizes.
Let's review each of these standard frame size options below:
This image features our Elegant White Timber Frames Collection
1. Picture Frames for 4x6" Photos
4 x 6inch photos measure 10.2 x 15.2cm and are the most common size of photograph. This is a default size that photos are commonly printed from kiosks and retail stores. There's always a wide variety of options for both unmatted and matted photo frames to suit this size, as well as collage frames with multi windows.
If you're looking for a matted frame to suit a 4x6inch photo, then the most common options would be 6x8inch or 8x10" photo frame. This is because picture frames in these sizes offer an evenly balanced matted border all around the 4x6inch photo.
2. Picture Frames for 5x7" Photos
5x7inch photos measure 12.7 x 17.8cm and are popular because they're bigger than a 4x6inch, but still compact and small enough to look good in photo frames for smaller places such as table-top, a shelf, a desk, a bookcase or a mantlepiece.
If you're looking for a matted frame to suit a 5x7inch photo, then these can look good in an 8x10" sized photo frame or even a bigger 10x12inch frame with an evenly matted border all around the 5x7inch photo.
3. Picture Frames for 8x10" Photos
8x10inch photos measure 20.3 x 25.4cm and are considered to be a medium sized enlargement. This size of photo is ideal for a family portrait that you want to display has a feature piece. An 8x10inch photo is also a size which you would consider hanging on a wall, rather than a table-top photo frame.
If you wanted to add a matboard border to an 8x10" photo, then any of the following frame sizes would be popular: 11″ x 14″, 12″ x 16″ or 16″ x 20″.
Note that 8x10inch photos do not have a common aspect ratio, the border for the matboard may be different between horizontal and vertical, but this is considered acceptable.
4. Picture Frames for 16x20" Photos
16x20inch photos measure 40.6 x 50.8cm and are considered to be a large sized enlargement. This size of photo would be ideal for a wedding portrait or a large family portrait. This would definitely be a feature piece to hang on a wall, but it would also look great when combined with other framed pieces on the same wall as well.
If you wanted to add a matboard border to a large 16x20" photo, then either a 20″ x 24″ or 24″ x 36″ standard sized picture frame would be suitable.
A 20x24inch sized picture frame with a matboard would offer an evenly balanced border all around a 16x20inch photo.
This image features our Coastal & Beach Decorator Art Prints
5. A4 Picture Frames for A4 sized Art
A4 measures 21x29.7cm and is the most common size of paper. This is a default size that paper is printed and used in Australia and can be printed using any desktop printer. It is commonly used for certificates, awards documents and even children's artworks. There's always a wide variety of A4 picture frame options to suit this size.
If you're looking for a matted frame to suit an A4 sized artwork or image, then the most common options in larger sized frames would be either 12x16inch or A3. An A3 frame with an A4 mat is common. However, if you're looking for an option that would also provide a more evenly balanced border around the A4 artwork, then a slightly smaller 12x16inch frame would work better.
6. A3 Picture Frames for A3 sized Art
A3 measures 29.7x42cm and is a common enlargement paper size. An A3 is exactly double the size of an A4. It is also a popular size for certificates, awards and children's artworks. A3 sized picture frames are common and easy to find.
If you're looking for a matted frame to suit an A3 sized artwork or image, then the most common options in larger sized frames would be either 16x20inches or A2. An A2 frame with an A3 window matboard is a popular option. But if you're looking for an option that would also provide a more evenly balanced border around the A3 artwork, then a smaller 16x20inch frame would look better.
7. A2 Picture Frames for A2 sized Art
A2 measures 42x59.4cm and is a common enlargement paper size. An A2 is exactly double the size of an A3 and 4 times the size of an A4. It is also a popular size for medium-sized poster prints. A2 sized picture frames are common and easy to find and would always be displayed hung on a wall.
If you're looking for a matted frame to suit an A2 sized artwork or image, then the most common options in larger sized frames would be either A1 or a 50x70cm frame. An A1 frame with an A2 window matboard is a common option, but there can be a dramatic difference between horizontal and vertical borders. So, if you're looking for a frame option that would also provide a more evenly balanced border around the A2 artwork, then a smaller 50x70cm frame would suit better.
