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Set Dimensions
This Photo Dimensions Converter helps resize a photo by changing its width and height. You can work in pixels, centimeters, millimeters or inches, choose a DPI value and download the converted image in JPEG, PNG or WebP format.
The tool is useful for passport photos, profile pictures, documents, school forms, job applications, social media images, thumbnails, blog images and any place where a photo must match a specific dimension.
How To Convert Photo Dimensions
- Upload your photo from your device.
- Select the measurement unit you want to use.
- Enter the required width and height.
- Keep aspect ratio locked if you do not want the photo to stretch.
- Choose the output format and download the resized photo.
Pixels, CM, MM And Inches
Pixels are best for websites and digital images. Centimeters, millimeters and inches are useful when a form or print requirement gives physical dimensions. DPI connects physical size to pixel size, so changing DPI affects how cm, mm and inch values convert to pixels.
Frequently Asked Questions
Does this tool upload my image?
No. The photo is processed in your browser canvas. Your file stays on your device while using the tool.
What does lock aspect ratio mean?
It keeps the original shape of the image. When you change width, the height updates automatically, and when you change height, the width updates automatically.
Which format should I choose?
JPEG is good for normal photos, PNG is useful when you need sharper graphics or transparency, and WebP is often smaller for web use.