UlvixorImage Size Calculator
Upload an image to see its real width, height, file size, and aspect ratio, and use the built-in calculator to get new dimensions while keeping the original proportions. Handy before resizing an image in your favorite editor. Everything happens in your browser — the file is never uploaded to a server.
How it works
- Select an image from your device using the file picker.
- Your browser loads the image and reads its real dimensions in pixels along with its file size on disk.
- The simplified aspect ratio is calculated and shown (for example, 16:9).
- Enter a target width or height in the calculator, and the other value is calculated automatically to keep the proportions.
Use cases
- Calculate the exact dimensions before resizing an image in Photoshop, GIMP, or Canva.
- Verify that an image meets a platform's size requirements (social media, banners, thumbnails).
- Check whether an image is in a standard aspect ratio (16:9, 4:3, 1:1) before using it.
- Plan a set of responsive images by calculating the corresponding height for different widths.