File Size Converter
Enter a file size in any unit — bytes, kilobytes, megabytes, gigabytes, or terabytes — and see the equivalent value in all other units instantly. Uses binary (1024-based) conversion, which matches how operating systems and file managers report file sizes.
This is useful for quick conversions when comparing storage capacities, understanding API upload limits, sizing cloud storage, or answering 'how many megabytes is that?' without mental arithmetic. Results update live as you type.
Everything runs in your browser — no data is sent anywhere.
By The Paper Room Editorial Team — File Tools
Frequently asked questions
Does this use 1000 or 1024 as the base?▼
This tool uses 1024 (binary) — 1 KB = 1024 bytes, 1 MB = 1024 KB, etc. This matches how most operating systems (Windows, macOS, Linux) and file managers report file sizes. Storage manufacturers use 1000 (decimal), which is why a '1 TB' drive shows as ~931 GB in your OS.
What's the difference between KB and KiB?▼
KiB (kibibyte) is the IEC standard name for 1024 bytes; KB (kilobyte) technically means 1000 bytes under SI. In practice, most software uses KB to mean 1024 bytes. This tool uses the common KB/MB/GB/TB labels with 1024-based values.
Can I convert to bits?▼
This tool converts between byte-based units only. To convert bytes to bits, multiply by 8. For example, 1 MB (1,048,576 bytes) = 8,388,608 bits = 8 Megabits (Mb).