Photo to Frame · A3 frame (29.7 × 42 cm)
Resize a photo for an A3 frame
Add your photo, choose what stays in the frame, and download an A3 file or a page to print at home. An A3 print needs 3,508 × 4,961 pixels at 300 DPI.
Frame size
- Your photo stays on your device — nothing is uploaded
- Free, no sign-up
- No watermark
- Prints at the exact size
Twice the size of A4 — a good wall print in the UK, Europe and Australia. A3 is a 1:√2 shape, so a typical phone photo (3:4) loses about 6% from the sides. It's larger than Letter or A4 paper, so print it at a photo shop or online print service.
How many pixels is an A3 photo?
Pixels per inch decide how sharp a print looks. Here's what an A3 print needs (portrait; swap the numbers for landscape). Pixels = inches × DPI.
| DPI | Pixels | Megapixels | How it looks |
|---|---|---|---|
| 300 | 3,508 × 4,961 | 17.4 | Sharp, even up close |
| 240 | 2,806 × 3,969 | 11.1 | Good — a little softer up close |
| 150 | 1,754 × 2,480 | 4.3 | Lowest we'd go — fine from across the room |
| 72 | 842 × 1,191 | 1.0 | Screen only — too low to print |
Will a phone photo fit an A3 frame?
A3 is a 1:√2 shape. Here's roughly how much is trimmed when a photo fills the frame (turned the same way as the frame). Prefer to keep everything? Choose Fit whole photo and add a border instead.
| Your photo | In an A3 frame |
|---|---|
| Phone photo (3:4) | Trims about 6% from the sides |
| Camera photo (2:3) | Trims about 6% from the top and bottom |
| Screenshot or video still (9:16) | Trims about 20% from the top and bottom |
| Square photo (1:1) | Trims about 29% from the sides |
Which frames and mats fit an A3 print?
Fits an A3 frame (29.7 × 42 cm), or a 40 × 50 cm frame with an A3 mount.
Mat openings are usually about ¼ in (6 mm) smaller than the print on each side, so the edges tuck behind the mat — keep faces and words away from the very edge. The tool shows that strip as a dashed line.
Frequently asked questions about A3 prints
What size should a photo be for an A3 frame?
For a print that's sharp even up close, 3,508 × 4,961 pixels — that's 300 DPI. At 2,806 × 3,969 (240 DPI) it's still a good print, a little softer up close, and 1,754 × 2,480 (150 DPI) is the lowest we'd go — fine from across the room. FrameReady makes the file at the right size for you.
Will my phone photo fit an A3 frame?
Most phone photos are 3:4, so about 6% is trimmed from the sides to fill an A3 frame. Drag the photo to choose what stays, or pick "Fit whole photo" to keep everything and add a border instead.
Can I print A3 at home?
A3 is bigger than letter or A4 paper can print at actual size (home printers leave a thin edge). Download the photo file and print it at a photo shop or online print service — they all take JPGs.
Is the free download full quality?
The free file is 2,546 × 3,600 pixels (217 DPI) at A3 — a good print, a little softer up close than 300 DPI. The tool always tells you the DPI of the file you're about to download, and whether your photo has more detail than that.
What is A3 in centimetres and millimetres?
A3 is 29.7 × 42 cm (297 × 420 mm), or 11.7 × 16.5 in. Frames are sold by exact size, so match the frame's label rather than a near metric equivalent.
Nearby frame sizes
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