Resize image in centimetres

Set the exact width and height in cm — at 300 DPI for passport, exam and print sizes. Free, instant and 100% in your browser.

= 413×531 px at 300 DPI

📁 Drop a JPG/PNG here, or click to choose

Resize a photo to exact centimetres

Indian forms and print shops often specify a photo size in centimetres— a 3.5×4.5 cm passport photo, a 2×2.5 cm stamp size, a 4×6 inch print, and so on. This tool lets you type the size in cm and the DPI, works out the exact pixel dimensions for you, and resizes your image to match.

For most exam and passport photos, keep the DPI at 300 — that produces the standard pixel sizes portals expect. If your form gives the size in pixels instead, use the Image Resizer, and to hit a file-size limit afterwards run it through the Image Compressor or resize in KB.

Frequently asked questions

How do I resize an image in cm?
Enter the width and height you need in centimetres and choose the DPI (300 is standard for forms and printing). Upload your photo and the tool resizes it to those exact centimetre dimensions, which you can download as a JPG.
How are centimetres converted to pixels?
Pixels = (cm ÷ 2.54) × DPI. For example, 3.5×4.5 cm at 300 DPI is about 413×531 pixels. The tool shows the pixel size for you and resizes the image accordingly.
What size is a passport photo in cm?
An Indian passport photo is 3.5×4.5 cm. Use the passport preset above to set it instantly, or type any custom cm size your form requires.
Which DPI should I choose?
Use 300 DPI for exam forms and printing — it gives the crisp, standard pixel dimensions most portals expect. Lower DPI (96) is only for on-screen use.
Is it free and private?
Yes — completely free with no sign-up, and the image is resized in your browser, never uploaded to a server.

Size your photo any way you need

By centimetres, pixels or KB — all free and private.

By Narender Chaudhary, Editorial & Product Lead · Updated June 2026

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