Points in Focus Photography

Megapixels to Image Resolution Calculator

Nothing complicated, I just keep needing to figure out x, y resolutions in pixels for an image given in megapixels so I threw together a quick tool.

Takes the resolution of the image in megapixels (e.g. 24 is 24 megapixels, 0.6 is 600,000 pixels), and the aspect ratio either in “n:m” notation (e.g. 3:2) or as a decimal number (e.g. 1.5). Returns the x and y sizes in pixels for that image rounded to a pixel.




This is so helpful! Thanks!

    Jason Franke  | admin

    Glad you found it useful.

Tobias Ekman

Thanks for the calculator. The calculation using the “n:m” notation when “m” is 10 or larger doesn’t work. “m” gets truncated to one character.
16 Mpixel 16:10 or 16:100 calculates to 16000 x 1000 which is the 16:1 ratio

    Jason Franke  | admin

    Hi Tobias,

    Thank’s for finding that bug. It should be fixed now.

Christopher Johnson

Thanks! Appreciate you putting this out there! Was trying to figure out how big the 192GP image of China really was. 584K image that printed at 200dpi would print to a football field. Very cool!

Leave a Reply

Basic Rules:
  • All comments are moderated.
  • Abusive, inflamatory, and/or "troll" posts will not be published.
  • Links to online retailrs (eg., Amazon, Ali Express, EBay, etc.) either directly, or indirectly through 3rd party URL shorternrs, will be removed form your post.
  • Extremely long comments (>1000 words) may be blocked by the spam filters automatically.
  • If your comment doesn't show up, it may have been eaten by the spam filters; sorry about that.
  • See the Terms of Use/Privacy Policy for more details.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Follow me on twitter for updates on when new comments and articles are posted.

Email Notice Details: By checking the above checkbox, you are agreeing to recieve one email at the email address provided with this comment, for the sole purpose of notifing you that the article author has been reseponded to your comment.

Our cookie and privacy policy. Dismiss