Resize Image to 45×38 mm
45 × 38 mm is a small landscape photo — wider than tall. At 300 DPI it is 531 × 449 pixels, and the DPI is saved so it prints at size. Everything runs in your browser — nothing is uploaded. Need a smaller file instead? Compress or convert.
Drag the preview to choose which part of the image is kept. The same framing is used for every image in the batch.
Why choose 45×38 mm?
45×38 mm (4.5×3.8 cm, 1.77×1.5 in) is a landscape print size used for ID cards, passport-style photos and application forms. At 300 DPI it needs 531×449 pixels.
531×449 px at 300 DPI
The pixel size is worked out for you, and the file is saved with 300 DPI so it prints at exactly 45×38 mm.
Where it is used
45×38 mm is a common size for ID cards, passport-style photos and application forms. Check the requirements of the form or printer you are sending it to.
28 per A4 sheet
With small gaps, 28 photos fit on one A4 page and 25 on US Letter — handy for printing several copies at home.
1.18:1 landscape shape
The 1.18:1 proportion decides the framing. Drag the preview so the subject sits where the rules expect it.
About 37 KB–75 KB as JPG
At 300 DPI a 45×38 mm photo is usually 37 KB–75 KB. If a form limits the file size, pair it with the compressor.
Same size, other units
45×38 mm equals 4.5×3.8 cm or 1.77×1.5 in. Enter whichever unit your instructions use — the result is identical.
45×38 mm at a glance
| Size | 45×38 mm = 4.5×3.8 cm, 1.77×1.5 in |
|---|---|
| Pixels at 300 DPI (print) | 531×449 |
| Pixels at 600 DPI (high quality) | 1063×898 |
| Pixels at 200 DPI | 354×299 |
| Pixels at 150 DPI | 266×224 |
| Aspect ratio | 1.18:1 |
| Copies per A4 sheet | 28 |
| Copies per US Letter sheet | 25 |
| Copies per 4×6 in photo paper | 6 |
| Typical JPG at 300 DPI | 37 KB–75 KB |
| Same and similar sizes | 4.5×3.5 cm, 45×35 mm, 47×36 mm, 1.5×1.5 in |
Resize a photo to 45×38 mm in 3 steps
- Add your photo — a clear, well-lit original works best.
- The size is already set to 45×38 mm at 300 DPI. Drag and zoom the preview to frame the face or subject.
- Click Resize and download. Print it at 100% (“actual size”) so it comes out at 45×38 mm.
New to image resizing? Read the full resizing guide.
Square sizes
Same width and height — profile photos, icons, product shots:
Landscape sizes
Wider than tall — screens, banners, covers and thumbnails:
Portrait sizes
Taller than wide — passport photos, forms and phone screens:
Change the aspect ratio
Paper, print & photo sizes
Paper and photo sizes in mm, cm and inches, plus DPI tools:
Resize for a platform
Ready-made sizes for social profiles and posts:
Resize tools
Batch resizing, DPI and crop tools:
A landscape size, not a passport photo
Check the orientation. 45×38 is 45 mm wide and 38 mm high. It is not a turned-around passport photo; ID photos are almost always portrait. Use this size only when your form or template states it.
Good subjects. Products, buildings, vehicles and objects that are wider than tall fit the shape naturally — it suits asset registers, inventory cards and catalogue sheets.
Pixels: 531 × 449 at 300 DPI, a ratio of about 1.18:1.
Portrait size if you need one: 35×45 mm. Other landscape: 45×35 mm, 47×36 mm, 52×40 mm.
Similar print and photo sizes
Nearby print sizes, saved at 300 DPI so they print at the right size:
Frequently asked questions
Is 45×38 mm a passport size?
No. It is a landscape format for cards and records. Passport photos are portrait, usually 35×45 mm.
How many photos of 45×38 mm fit on an A4 page?
About 28 on A4 and 25 on US Letter, leaving 5 mm margins and 3 mm between photos. On 4×6 inch photo paper you can fit 6.
What DPI should a 45×38 mm photo be?
300 DPI is the standard for photo prints and gives 531×449 pixels. Some offices accept 200 DPI (354×299); 600 DPI (1063×898) is only needed for very high-quality printing.
What is 45×38 mm in other units?
45×38 mm is 4.5×3.8 cm, 1.77×1.5 in. Close sizes that are often confused with it: 4.5×3.5 cm, 45×35 mm.
Why does my 45×38 mm print come out the wrong size?
Most printers scale images to “fit page” by default. Choose “actual size” or 100% in the print dialog, and the photo will print at exactly 45×38 mm.
How large is a 45×38 mm photo file?
Usually 37 KB–75 KB as a JPG at 300 DPI. If an online form allows less, reduce it with the compressor — the print size stays the same.
Are my images uploaded?
No. Resizing happens entirely in your browser. Nothing is transmitted or stored, and you can disconnect from the internet after the page loads and it still works.