Image Size Finder
Check the width and height of any image in pixels, inches or cm — with its file size, DPI, aspect ratio and print size.
How it works
How to check the size of an image?
Drop in your images
Drag them onto the box, pick them from your phone or computer, paste a screenshot with Ctrl + V, or paste an image link. One picture or a whole folder — there is no limit.
Read the width and height
Each picture gets a card with its size in pixels, right way up, plus the file size, format, DPI, aspect ratio, megapixels and bit depth. Several images also get a table to compare them side by side.
Switch units or copy the numbers
Show the size in inches, cm or mm at the file’s own DPI or at 72, 150 or 300. Copy the width, the height, both, or ready-made CSS — or take every result as text or a CSV. Wrong size? Resize the image to the exact pixels you need.
Pixels, inches and DPI
What image size actually means
A digital picture is measured in pixels: a 4032 × 3024 photo is 4032 dots across and 3024 down, about 12 megapixels. That is the only size it really has. Inches and centimetres only appear when it is printed, and they depend on how tightly the pixels are packed on paper — the DPI, or dots per inch. The same photo is 13.4 inches wide at 300 DPI and 56 inches wide at 72.
So this image size finder reads both halves. The pixels come from the file’s header, which is also where the DPI the camera or editor saved is kept, and the print size is the one divided by the other. Where a file carries no DPI, which is true of most screenshots and web images, it says so instead of guessing. To change the numbers rather than read them, crop the image to a new shape first.
300 DPI
Photo prints, magazines and anything held in the hand. The Sharp print line shows this size.
150 DPI
Posters and large prints seen from a step back. Twice the size of the 300 DPI print.
72–96 DPI
Screens. DPI does not change how a picture looks online; only the pixels do.
What you get
Everything this image size checker shows
Width and height in pixels
Read from the file itself, the right way up — a phone photo stored sideways is measured as you see it.
File size, exactly
KB or MB for reading, plus the exact byte count for a form that has a limit.
DPI and print size
The DPI saved in the file, and the size it prints at in inches and cm — at 300 DPI too.
Aspect ratio and megapixels
Reduced exactly (16:9, 4:5) with the nearest common ratio when it is almost one.
Bit depth and colour
24-bit RGB, 32-bit with transparency, CMYK, grayscale or a palette — and the frame count of an animated GIF or WebP.
Many images at once
Drop a whole folder: a card per picture, a table to compare, and a CSV of the lot.
HEIC, TIFF, PSD and SVG
Measured even where the browser cannot show them — the size is in the file’s header.
Check an image by link
Paste the address of a picture online and get its size without saving it first.
Nothing is uploaded
Files are read on your device. No account, no file-size limit, no watermark.
Questions