Data Size Converter
Convert a file size between bits, bytes, and decimal or binary units.
Enter a size once and see it in every unit. Decimal units such as MB and binary units such as MiB are listed side by side.
Features
Use Cases: When This Tool Helps
-
Understand "missing" storage
See why a 1 TB drive shows about 931 GB in Windows (decimal vs binary units).
-
Choose a mobile or internet plan
Convert GB of monthly data into how many hours of video or files you can use.
-
Plan cloud storage and backups
Estimate how many TB you need for photo libraries, videos, and server backups.
-
Check file upload limits
Convert a 25 MB email limit or 2 GB upload cap into the units your files show.
-
Size servers and databases
Developers and admins can convert between bytes, MiB, and GiB in configs and logs.
-
Estimate download times
Combine file size with your internet speed in megabits to plan large downloads.
How to Use
- Enter a value.
- Choose its unit.
- Read or copy any conversion.
FAQ
Why does my 1 TB drive show less space?▾
Drives are sold in decimal units, but some systems report binary units. 1 TB is about 0.91 TiB.
What is the difference between MB and MiB?▾
A megabyte is 1,000,000 bytes. A mebibyte is 1,048,576 bytes.