DPI / PPI Converter
Convert your dimensions in pixels, centimeters or inches based on the resolution (DPI). Ideal for preparing files for print or web.
Drop your image here
We'll extract the dimensions automatically
1. Dimensions
2. Target resolution
Live result
Estimated weight (JPG):
Go deeper
Why use this calculator?
When working on a screen, you think in pixels. But the printer wants centimeters or millimeters. The link between the two? Resolution, expressed in DPI (Dots Per Inch) or PPI (Pixels Per Inch).
This tool saves you the mental math. Type your numbers, set your target resolution, and leave with the right dimensions in under 10 seconds. Essential to make sure your image won't be blurry or pixelated once on paper.
When to use it?
1. Prepare a file for the printer
Your printer needs an A5 flyer (14.8 × 21 cm) at 300 DPI. Type the dimensions in cm, set 300 DPI, and you'll know exactly how many pixels your Photoshop canvas should be (1748 × 2480 px).
2. Optimize an image for the web
A smartphone photo is often 240 or 300 DPI. For your website that's overkill. Drop to 72 DPI, the tool estimates the weight saved.
3. Print a large-format banner
For a 3 m banner viewed from a distance, 300 DPI would create a monstrous file. Drop the DPI to 150 or even 72: pixels won't show and the file stays exportable.
How to pick the right DPI?
- 72 to 96 DPI: perfect for screens (web, social, UI). No need for more.
- 150 DPI: standard for large-format prints (posters, banners) viewed from afar.
- 300 DPI: absolute standard for close-up printing (flyers, magazines, photos).
Drag & drop tip
Drop an image directly onto the tool to instantly get its pixel dimensions. Handy to check if a photo is big enough for your target medium.
FAQ
What is the difference between DPI and PPI?
It's the exact same thing. DPI stands for "Dots Per Inch" and PPI for "Pixels Per Inch". Software like Photoshop or Illustrator usually says DPI out of habit, but the value is identical.
If I change DPI from 72 to 300, will my image be higher quality?
No — and it's the most common mistake. Changing the DPI of an existing image doesn't recreate missing detail: the software just interpolates pixels and the file gets heavier without becoming sharper. DPI must be set when you create the document, or depends on your camera's native resolution.
How do I find out the DPI of my current image?
On Windows: right-click the file > Properties > Details tab (look for "Horizontal resolution"). On Mac: open with Preview > Tools > Show Inspector. You can also drop the image into our tool's drag & drop zone to get its pixel dimensions.
Why is my exported file so heavy?
Image weight grows exponentially with dimensions. An A4 at 300 DPI is ~8 million pixels. Always check whether you really need 300 DPI (close-up print) or 150 DPI is enough (poster, banner).
Is my data sent to a server?
No. All conversion happens in your browser. If you drop an image, it stays on your machine — the tool only reads its dimensions locally.
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