Data Storage Converter
Convert between digital storage units: bytes, KB, MB, GB, TB, and more.
Result
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Enter value and select units
Bytes
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KB
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MB
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GB
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Data Storage Units
Binary vs Decimal
Binary (KiB, MiB): 1024 base (2¹⁰)
Decimal (KB, MB): 1000 base (SI standard)
Decimal (KB, MB): 1000 base (SI standard)
Storage manufacturers use decimal (1000). Operating systems often use binary (1024), causing the "missing" space on drives.
Unit Sizes
| Unit | Binary | Decimal |
|---|---|---|
| Kilobyte (KB) | 1024 B | 1000 B |
| Megabyte (MB) | 1024 KB | 1000 KB |
| Gigabyte (GB) | 1024 MB | 1000 MB |
| Terabyte (TB) | 1024 GB | 1000 GB |
| Petabyte (PB) | 1024 TB | 1000 TB |
Common File Sizes
- Text message: ~1 KB
- Photo (smartphone): 3-5 MB
- MP3 song: 3-8 MB
- HD movie: 4-8 GB
- Video game: 50-150 GB
Frequently Asked Questions
Why does my 1 TB drive show only 931 GB?
Manufacturers use decimal (1 TB = 1,000,000,000,000 bytes). Windows uses binary, so it shows 931 GiB (labeled as GB).
What's the difference between Mbps and MBps?
Mbps = megabits per second, MBps = megabytes per second. Divide Mbps by 8 to get MBps (download speed).