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CENTIMETERS · A4 PAPER
Print an image in cm on A4.
Set the width and height in centimeters, place the image on an A4 sheet and download a free PDF that prints at the exact size you chose.
Free. No sign-up. Your photos stay private
01 Your image JPG, PNG, WEBP
02 Image dimensions
Size on paper
Aspect ratio locked · no stretching
The frame matches your selected dimensions.
03 Your paper
Print-ready · single page · no watermark
YOUR PAPER PREVIEWUS Letter · Portrait
PRINT AT 100% · ACTUAL SIZE
20 mm · calibration
Drag a corner to resize. With Fill and crop, drag the photo to choose what stays.
The key to printing at the right size
In your print dialog, select “Actual size” or “100%”. Turn off “Fit to page.” Settings by app
How to print an image at an exact size in cm
- Add your image. The tool is set to centimeters and A4 paper, starting at 15 × 10 cm.
- Type your size. Enter the width or height in cm. With the lock closed, the other side follows the image's proportions.
- Print at 100%. Choose A4 and Actual size in the print dialog, then measure the 20 mm calibration mark.
Common photo sizes in centimeters
- 9 × 13 cm: small prints and albums
- 10 × 15 cm: the standard photo print in Europe
- 13 × 18 cm: frames and greeting cards
- 15 × 20 cm: larger frames, still fits on A4
Largest size on A4
With the 10 mm safety margin on every side, the largest image is 19 × 27.7 cm on A4. That leaves room for printers that cannot print to the edge.
Can I use millimeters instead?
Yes. Switch the units to mm. The PDF uses the same physical size whatever unit you type in.
Why does my print come out smaller than the size in cm?
The print dialog is probably set to Fit to page. Choose Actual size or 100% and print again.
FROM PIXELS TO PAPERHow to print an image
How to print an image
at its actual size
Set your size
Choose the frame’s printed size. Fit the whole image or crop to fill.
Print at 100%
Open the PDF, select the matching paper size, and measure the 20 mm mark with a ruler.
PHOTO PRINT SIZES
Common photo print sizes and the pixels you need
Around 300 pixels per inch (PPI) gives sharp detail for photos viewed up close. 150 PPI is a practical minimum for casual prints. Every size below fits on US Letter and A4 paper with PrintScaling.
| Print size | Inches | Centimeters | Sharp (300 PPI) | Minimum (150 PPI) | Action |
|---|---|---|---|---|---|
| Wallet | 2.5 × 3.5 in | 6.4 × 8.9 cm | 750 × 1050 | 375 × 525 | |
| 3.5 × 5 | 3.5 × 5 in | 8.9 × 12.7 cm | 1050 × 1500 | 525 × 750 | |
| 4 × 4 square | 4 × 4 in | 10.2 × 10.2 cm | 1200 × 1200 | 600 × 600 | |
| 4 × 6 (standard photo) | 4 × 6 in | 10.2 × 15.2 cm | 1200 × 1800 | 600 × 900 | |
| 5 × 5 square | 5 × 5 in | 12.7 × 12.7 cm | 1500 × 1500 | 750 × 750 | |
| 5 × 7 | 5 × 7 in | 12.7 × 17.8 cm | 1500 × 2100 | 750 × 1050 | |
| 6 × 8 | 6 × 8 in | 15.2 × 20.3 cm | 1800 × 2400 | 900 × 1200 |
Working in centimeters? See how to print an image in cm on A4. 8 × 10 in and larger prints do not fit inside the 10 mm safety margin of a single US Letter or A4 sheet.
PRINTER SETTINGS
How to print a PDF at 100% (actual size)
Most size problems come from the print dialog, not the file. Your PDF already has the exact physical size. These settings keep it that way.
Chrome and Edge
Open the PDF, press Print, then open More settings. Set Scale to Default, Actual size or Custom 100. Avoid Fit to page and Fit to printable area.
Adobe Acrobat Reader
In the Print dialog, under Page Sizing & Handling, choose Actual size. Leave Choose paper source by PDF page size unchecked if your printer picks the wrong tray.
Preview on Mac
Choose File › Print, show details if needed, then select Scale: 100% instead of Scale to Fit. Check that the paper size matches the PDF.
Printer settings
Some printer drivers add their own scaling. In Printer properties or Preferences, turn off Fit to paper, Borderless and Auto reduce, and select the same paper size.
Check before printing many copies: print one page and measure the 20 mm calibration mark with a ruler. If it measures 20 mm, your printout is at actual size.
Printing at actual size: common questions
How do I print a 4 × 6 photo on US Letter paper?
Upload your photo, choose the 4 × 6 in preset, and select US Letter paper. Use Fit entire image to preserve the whole photo, or Fill and crop to fill the frame. Download the PDF and print it at Actual size or 100%, with Fit to page turned off.
Can I set an image size in centimeters or millimeters?
Yes. Select cm or mm in Image dimensions, then enter the printed width and height. The PDF uses these physical dimensions. Your printer settings must still use 100% scale, and the image must fit inside the selected sheet margins.
Why does the image look a different size on screen?
The preview is scaled to fit your screen. The PDF contains the actual physical dimensions. To preserve them, print at 100% with all scaling turned off in your PDF viewer and printer settings.
Will my image look sharp?
The resolution indicator estimates pixels per inch at your chosen print size. Around 300 PPI is a useful target for detailed photos. Lower-resolution images may look softer. Exporting a PDF does not add missing detail.
Are my photos uploaded anywhere?
No. Your image and PDF are processed locally in this browser. This tool uses no accounts, upload service, or external image processing.
Can I print several copies on one sheet?
Yes. In step 03, choose As many as fit under Copies on the sheet. The tool fills the page with copies of the same photo at the exact size, turns them 90° when that fits more, and adds crop marks between them. See how many copies fit for common sizes.
Can I print larger than one sheet?
This first version places one image on US Letter or A4 paper with at least 10 mm (about 0.4 in) of margin. Oversized images are flagged. Multi-page poster printing is not included yet.