Logo Size Calculator

Those two sizes are fixed platform requirements rather than proportions calculated from your logo. A browser tab favicon is actually 16x16 or 32x32 (48x48 for bookmarks), but those tiny targets are generated from a single 512px master square, which is what this tool reports -- and most social media platforms set a 400px minimum upload. Neither changes based on your logo's own width or height. Every other size this calculator reports does scale with your original dimensions because those targets are defined by a fixed physical size (like a business card height) rather than a fixed pixel box.

The web header size is calculated as a fixed 60px height with the width solved from your logo's aspect ratio, so a wider logo relative to its height produces a wider recommended header, while a taller, more square logo produces a narrower one at the same 60px height. This keeps the header logo from being stretched or squished -- it's always proportional to your master file, unlike the favicon and social minimums which are fixed boxes regardless of shape.

300 DPI is the standard print-industry target for crisp, professional-looking printed materials at close viewing distance, which is exactly the situation with a business card held a few inches from the eye. Lower resolutions can produce visibly soft or pixelated printed edges at that close range, so this calculator sizes the business card version at 300 pixels of height per printed inch to stay safely within that professional-print standard.

Signage is viewed from much farther away than a business card, and print resolution requirements drop as viewing distance increases -- a viewer standing several feet from a sign doesn't need the same pixel density as someone holding a card inches from their face. 150 DPI is a common large-format print standard that balances file size and print quality for that farther viewing distance, which is why this calculator uses a lower DPI assumption for the signage size than for the business card size.