Developer Tools
Data Size Converter
Bytes through TB and TiB — decimal and binary side by side.
✓ Free
✓ No account
◉ Runs on this device
Developer Tools
Powering up the tool…
TOOL DATA-SIZE-CO
What this tool does
About the data size converter
The 1000-vs-1024 argument, settled by showing both.
How to use it
- Enter value and unit (decimal or binary).
- Read both full tables.
- Quote the convention you mean (GB vs GiB).
- Peace is achieved.
Useful for
- Explain why a 1TB drive “shows” 931GB.
- Convert bandwidth or storage between conventions.
- Get exact bytes for a quota or limit.
Straight answers
Data Size Converter FAQ
So who is lying, the drive maker or the OS?
Neither: makers use SI (10¹² bytes = 1TB, correctly), many OSes count in binary (2⁴⁰ = 1TiB) while SAYING GB. The 7% gap is a labelling schism, not theft — and this table is the peace treaty.
Which should I use?
Networking and storage marketing speak decimal; memory and file systems often binary. When precision matters, write GiB/TiB explicitly — the i is the whole message.