Enter your target width and height in centimeters, millimeters or inches, along with your print DPI, and watch the exact pixel equivalent update live as you type. This makes it easy to edit image size in inches for printing, or to change the resolution of a picture for physical documents that use real-world measurements instead of pixels.

How to Resize an Image in cm, mm or Inches

1. Click the upload box or drag and drop your image into it.
2. Enter your target width and height, and choose cm, mm or inches as the unit.
3. Set your DPI. 300 DPI is standard for print, while 72 or 96 DPI is common for screens.
4. Watch the live pixel-equivalent readout update as you type.
5. Click Resize Image, then download the result.

Frequently Asked Questions

How do I edit image size in inches?

Select Inches as your unit, enter your target width and height, set your DPI, and the tool converts that directly into the correct pixel dimensions before resizing.

How do you change the resolution of a picture for printing?

Print resolution depends on both physical size and DPI. Enter your desired print size in cm, mm or inches along with 300 DPI, which is the standard for sharp, professional print quality.

What DPI should I use?

Use 300 DPI for most print materials such as documents and photos. Screens typically only need 72 to 96 DPI, since pixel density there is much lower than print.

How is width and height in cm converted to pixels?

The tool first converts your cm or mm measurement into inches, then multiplies by your chosen DPI to get the exact pixel width and height, shown live as you adjust the values.

Why does the same physical size give different pixel dimensions at different DPI?

DPI controls how many pixels are packed into each inch. A higher DPI value packs more pixels into the same physical size, producing a larger and sharper pixel dimension for printing.

Can I switch between cm, mm and inches without losing my settings?

Yes. Changing the unit dropdown keeps your entered numbers as-is and recalculates the pixel equivalent using the new unit, so you can compare options quickly.

You can resize images for social media by selecting the correct dimensions for each platform and content type. Different placements require different aspect ratios, including square posts, portrait images, Stories, profile pictures, cover photos, and advertisements. Preparing your images before uploading helps reduce unexpected cropping and gives you more control over how your photos and graphics appear.

Before uploading images to a website, it is often better to resize an image for the website instead of using an unnecessarily large original file. A photo that is much larger than its displayed dimensions can increase page weight without providing a visible benefit. Resize images according to their intended placement, compress them appropriately, and consider modern formats such as WebP when supported. This creates a better balance between image quality, file size, and website performance.