Data Size Converter translates file sizes and storage units for logs, hosting limits, upload constraints, and bandwidth estimates. It keeps the math local and fast.
Yes. The tool is free and runs directly in your browser with no account required.
No. All conversion runs locally using JavaScript in the browser tab.
Decimal mode treats 1 KB as 1000 bytes (the convention used by storage manufacturers and marketing). Binary mode treats 1 KiB as 1024 bytes (how operating systems and file systems typically calculate size).
This is the classic decimal vs. binary mismatch — a drive advertised as '1 TB' (decimal, 1,000,000,000,000 bytes) shows as roughly 931 GiB in Windows, which reports binary values while calling them 'GB'.
Bit, Byte, KB/MB/GB/TB/PB in decimal mode, plus Kibibyte/Mebibyte/Gibibyte/Tebibyte for binary values — all shown simultaneously so you can compare them at a glance.
Conversions use JavaScript's BigInt for exact integer arithmetic, avoiding the floating-point rounding errors that simple division can introduce on very large numbers.
Yes — Bit is included as a unit, useful for converting network bandwidth figures (often quoted in bits per second) alongside file sizes (quoted in bytes).
