Tech & Media Calculators

Screens, files, bandwidth and colour

Aspect Ratio Calculator Simplify a resolution and resize while keeping proportions exact. Data Storage Converter Bits, bytes, kilobytes through petabytes — with the decimal/binary difference shown. Download Time Calculator How long a file takes at a given connection speed. Video & Audio File Size Calculator Estimate file size from bitrate and duration, or the bitrate to hit a size. IP Subnet Calculator Network address, broadcast, usable host range and mask from CIDR. Password Strength Calculator Entropy in bits and how long a brute-force attack would take.