Data storage units
Convert decimal and binary storage units with explicit bit and byte distinctions.
Technology and media
Download and transfer time
Estimate transfer time from file size, link speed and your assumed efficiency.
Video file size
Estimate video storage from bitrate and duration, or solve bitrate for a size limit.
Screen pixel density
Estimate pixels per inch, pixel pitch and physical screen dimensions from resolution and diagonal.
Image print size and resolution
Compare print dimensions and resolution, preserving aspect ratio for fit or crop.