Resize image in Centimeter (CM)
Resize your images with exact centimeter dimensions. Set width and height in CM to resize image for passport photos, ID cards, printing, and official documents.
Drag and drop your images here
or click to browse your files
Supports JPG, PNG, WebP, and GIF (100% browser-based)
Quick Resize Presets
Other Resize Methods
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Common Image Sizes in Centimeters
| Photo Type | Size (CM) | Use |
|---|---|---|
| Passport | 3.5 x 4.5 | Passport photos worldwide |
| Visa Photo | 3.5 x 4.5 | Visa applications |
| ID Card | 8.56 x 5.4 | National ID and driver's license |
| A4 Paper | 21 x 29.7 | Printing on standard paper |
| 4x6 Photo Print | 10 x 15 | Standard photo prints |
How to Resize an Image in CM Online
Resizing an image in centimeters takes less than 30 seconds with Image Magic Tool. Follow these three steps to resize image in CM instantly:
- Upload your image - Click the upload area or drag and drop your JPG, PNG, WebP, or GIF file. Your image is processed directly in your browser and never sent to any server.
- Enter your CM dimensions - Type the exact width and height in centimeters. Use the quick resize presets for standard sizes like Passport (3.5 x 4.5 cm), Visa Photo, A4, or ID Card. You can also resize image by CM manually for any custom size.
- Download your resized photo - Click Resize and then Download. Your resized image is ready immediately at the exact centimeter dimensions you specified.
That is all it takes to resize image centimeters online for free. No registration, no watermark, no hidden steps.
Understanding Centimeters, Pixels, and DPI in Image Resizing
When you resize image centimeters online, the tool automatically handles the conversion between digital pixels and physical centimeters. Here is what that means:
What is DPI and why does it matter for CM resizing?
DPI stands for Dots Per Inch. It defines how many pixels are packed into each inch of a printed image. The standard for print is 300 DPI. When you set an image to 3.5 x 4.5 cm at 300 DPI, the tool calculates the exact pixel dimensions needed to produce a sharp print at that physical size.
Why resize by CM instead of pixels?
Pixels measure digital screen grids, while centimeters specify physical print dimensions. When you resize in CM on ImageMagicTool, the tool calculates the exact 300 DPI pixel dimensions and embeds 300 DPI metadata into JPG and PNG files. When printing, select “Actual Size” or “100% Scale” (rather than “Fit to Page”) in your printer dialog so the printed output matches your centimeter measurements.
How does this tool convert CM to pixels?
The formula is: Pixels = round((CM / 2.54) × 300). For example, a 3.5 cm width at 300 DPI equals 413 pixels, and an 8.56 × 5.4 cm ID card equals 1011 × 638 pixels. ImageMagicTool performs this calculation automatically as you type your centimeter dimensions.
Why Choose ImageMagicTool?
Privacy First
All processing happens on your device. Your images never leave your computer.
Lightning Fast
No server uploads or waiting. Instant processing directly in your browser.
Completely Free
No registration, no watermarks, no hidden costs. Use all tools for free.
Works Everywhere
Use on desktop, tablet, or mobile. Works on any modern browser.
Multiple Tools
Resize, convert, and compress. All the image tools you need in one place.
Batch Processing
Upload and process multiple images at once with the same settings.
Other Free Image Tools
Once you have resized your image in CM, you may also need:
- Image Compressor - Reduce photo file size from MB to KB without losing quality
- Image to A4 Size Converter - Resize any image or JPG to A4 paper size (21 x 29.7 cm) for printing
- PNG to JPG Converter - Convert PNG images to JPG for smaller file sizes
- WebP to JPG Converter - Convert WebP images to universally supported JPG format
Frequently Asked Questions
How do I resize an image in centimeters?
Upload your image using the tool at the top of this page. Enter the width and height in centimeters, then click Resize. Your image will be resized to the exact CM dimensions you entered and is ready to download immediately.
Can I resize image by CM for any country's passport photo?
Yes. Different countries require different passport photo dimensions in centimeters. Use the quick presets for common sizes or enter custom CM dimensions manually. The tool works for passport and visa photo requirements worldwide.
What is the difference between resizing in CM vs pixels?
Pixels measure digital grid dimensions on screens, while centimeters specify physical print size. When you resize in CM on ImageMagicTool, the tool converts your centimeter values to 300 DPI print pixels (Pixels = round((CM / 2.54) * 300)) and embeds 300 DPI metadata into JPG and PNG outputs so printers and document portals read the intended physical size.
Is my image uploaded to a server?
No. All image processing happens directly in your browser on your device. Your images never leave your computer, ensuring complete privacy.
Can I resize multiple images at once?
Yes. The tool supports batch processing. Upload multiple images and process them together with the same CM settings.
What image formats are supported?
We support JPG, JPEG, PNG, WebP, and GIF formats. PNG and WebP preserve transparency, GIF outputs a static single-frame GIF89a, and JPG/JPEG embeds 300 DPI with a white background.
How do I resize a photo in CM and reduce the file size in KB?
First resize your image in CM using this tool, then open our Image Compressor to target an upper KB limit such as 20 KB, 50 KB, 100 KB, or 300 KB.
Is this tool completely free?
Yes. There is no cost, no account required, and no watermark on downloaded images. All tools on ImageMagicTool are free to use.