Technology

Free technology calculators for displays, screens, and digital media. Calculate aspect ratios, pixels per inch, and screen dimensions for monitors, phones, tablets, and digital content.

Aspect Ratio Calculator

Free aspect ratio calculator — Calculate aspect ratios from width and height, find missing dimensions, resize images proportionally, and compare screen ratios. Includes a full table of standard display and video aspect ratios.

PPI Calculator

Free PPI calculator — Calculate pixels per inch (PPI), pixels per centimeter (PPcm), dot pitch, diagonal pixels, total megapixels, and aspect ratio from screen resolution and diagonal size. Compare pixel density across popular devices.

Digital Storage Converter

Convert between all standard digital storage units in decimal (SI) and binary (IEC) notation. Supports 42 units from bits and bytes to quettabytes and quebibytes, with reference tables, percent-difference data, and FAQs.