Image Dimensions Checker
Choose one or many pictures to see their size in pixels, their shape, how large they print and whether they meet a size you need.
Drag pictures here or choose them
About Image Dimensions Checker
Before you send a picture to a printer, a website or an application form it helps to know exactly how big it is. Choose one or many pictures and a table shows the width and height in pixels, the shape as a ratio such as 4:3, the megapixels, the file size and the type, and how large each would print.
If a site gives you a minimum size, type it in and every row says whether the picture is big enough, and by how many pixels it falls short. The print size is worked out from the resolution you choose, so you can see at once that 3000 pixels is 10 inches at 300 dots per inch.
How to use Image Dimensions Checker
- Choose one or more pictures.
- Set the print resolution, usually 300 dots per inch.
- Enter a minimum width and height if you have requirements.
- Read the table and clear it to start again.
Common uses
- Checking a photo meets a size rule
- Finding out how large a picture will print
- Comparing the sizes of a folder of images
- Working out the aspect ratio of a screenshot
Frequently asked questions
How is the print size worked out?
Pixels divided by dots per inch gives inches, and inches times 2.54 gives centimetres. A picture 3000 pixels wide printed at 300 dots per inch is 10 inches or 25.4 centimetres wide.
What resolution should I use for printing?
300 dots per inch is the usual standard for sharp prints held close. 150 is often fine for posters seen from further away.
What does "about 3:2" mean?
The shape is within one percent of that common ratio but not exactly equal, for example after a small crop.
How many megapixels is a picture?
Multiply the width by the height and divide by one million. A 4000 by 3000 picture is 12 megapixels.
Is there a limit on files?
You can list up to 100 pictures at once. Each must be an ordinary picture file under 100 megapixels.