Data Size Converter

A free online conversion calculator that convert between bytes, kilobytes, megabytes, gigabytes, terabytes and more. compare file sizes, storage capacity, and data transfer amounts. Get accurate results instantly without any software installation. Digital storage units confuse even experienced technologists because of the binary-versus-decimal divide: hard-drive vendors use decimal terabytes while operating systems report binary tebibytes, creating apparent capacity discrepancies. Cloud storage limits, bandwidth quotas, and database sizing all depend on understanding these distinctions precisely. Convert between bits and bytes in both decimal (KB = 1000 bytes) and binary (KiB = 1024 bytes) conventions, covering the full range from bits to petabytes. A note clarifies which standard each result uses to prevent the common KB/KiB confusion. Enter a value in bytes, kilobytes, megabytes, gigabytes, terabytes, or petabytes and toggle between binary (1024-based) and decimal (1000-based) conventions. The converter clearly labels each system so you never confuse a kibibyte with a kilobyte again. Storage unit conversions are pure arithmetic executed in the browser's JavaScript engine — no server round-trips. This matters when evaluating infrastructure capacity for projects under embargo or computing storage costs for unreleased product specifications.