How to Choose a Frame Size
Picking the right picture frame size is easier than you think. Whether you are framing a family photo, a fine art print, or a poster, the process comes down to measuring your piece, deciding on a mat, and matching the result to a standard frame size. Follow the steps below for a perfect fit every time.
Measure your artwork or photo
Use a ruler or tape measure to determine the exact width and height of the piece you want to frame. Measure the image area, not any existing borders or margins.
Decide whether to use a mat
A mat (or mount) adds a border between your artwork and the frame edge. Mats improve the presentation, protect the art from touching the glass, and let you use a larger frame for a smaller print. Standard mat borders are 2 to 3 inches wide.
Choose the right frame size
If using a mat, select a frame that matches the outer mat dimensions. For example, a 5x7 photo with a 2-inch mat on all sides needs an 8x10 frame. Without a mat, the frame size should match the artwork size exactly.
Consider the wall space
The framed piece should complement the wall and surrounding furniture. A general rule is that wall art should cover 60 to 75 percent of the available wall width above furniture. For gallery walls, plan the arrangement on the floor first.
Pick the frame style and depth
Thin frames suit modern, minimalist decor, while ornate frames work for traditional settings. Check the frame depth (also called rabbet depth) to ensure it can hold the glass, mat, artwork, and backing board.
Verify orientation
Confirm whether your piece is portrait (taller than wide) or landscape (wider than tall). Many standard frame sizes like 8x10 or 11x14 can hang either way, but panoramic or square pieces may need specific frames.
Quick Reference: Common Photo Sizes and Frames
| Photo Size | Frame Without Mat | Frame With Mat |
|---|---|---|
| 4x6" | 4x6" | 5x7 or 8x10" |
| 5x7" | 5x7" | 8x10 or 11x14" |
| 8x10" | 8x10" | 11x14 or 16x20" |
| 11x14" | 11x14" | 16x20" |
| 16x20" | 16x20" | 20x24 or 24x30" |
| 18x24" | 18x24" | 24x30 or 24x36" |
Frequently Asked Questions
What is the most common picture frame size?
The most common picture frame sizes are 4x6, 5x7, and 8x10 inches. The 4x6 size matches standard photo prints, 5x7 is popular for portraits, and 8x10 is the go-to for larger prints and certificates.
What size frame do I need for an 8x10 photo with a mat?
For an 8x10 photo with a standard 2-inch mat border on all sides, you need an 11x14 frame. The mat opening will be cut to 7.5x9.5 inches (slightly smaller than 8x10) to overlap the photo edges and hold it in place.
How do I know what size mat to use?
Standard mat borders are 2 to 3 inches wide. For small frames (5x7 or 8x10), use a 2-inch border. For larger frames (16x20 and up), a 3-inch border looks more proportional. The mat opening should be about 1/4 inch smaller than your artwork on each side.
What is the difference between frame size and mat opening?
The frame size is the outer dimension of the frame, which determines how much wall space it occupies. The mat opening is the window cut into the mat that reveals the artwork. For example, an 11x14 frame with an 8x10 mat opening displays an 8x10 image inside an 11x14 frame.
Can I use the same frame for portrait and landscape orientation?
Yes, most standard frame sizes like 8x10 or 11x14 come with hardware for both orientations. Just rotate the frame and adjust the hanging hardware. Some frames include sawtooth hangers on both the short and long edges for easy switching.