Data Storage Converter

Convert between bytes, KB, MB, GB, TB and binary units instantly

Decimal (SI) Units
Bytes
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Kilobytes (KB)
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Megabytes (MB)
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Gigabytes (GB)
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Terabytes (TB)
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Petabytes (PB)
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Binary (IEC) Units
Kibibytes (KiB)
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Mebibytes (MiB)
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Gibibytes (GiB)
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Tebibytes (TiB)
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Bits
Bits
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Megabits (Mb)
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⚠ Note: Hard drive manufacturers use decimal (1 GB = 1,000,000,000 bytes). Operating systems use binary (1 GiB = 1,073,741,824 bytes). This is why a "1TB" hard drive shows as ~931 GiB in Windows.
Quick References
How to Use the Data Storage Converter
1
Enter the storage value you want to convert
2
Select the unit from the dropdown — decimal (MB, GB), binary (MiB, GiB), or bits
3
Click Convert Storage to see all conversions at once
4
Use Quick References for common storage sizes like 1 GB, 1 TB, or 100 Mbps
About This Data Storage Converter

Our data storage converter handles both decimal (SI) units — where 1 KB = 1,000 bytes — and binary (IEC) units — where 1 KiB = 1,024 bytes. This distinction matters because hard drive manufacturers use decimal units while operating systems like Windows use binary units, which is why your "1TB" drive appears smaller than expected.

The converter also includes bit-based units (Mbps, Gbps) commonly used for internet speeds and network bandwidth. Converting between storage size (bytes) and transfer speed (bits per second) helps calculate download and upload times for files.

Frequently Asked Questions
In decimal (SI): 1 GB = 1,000 MB. In binary (IEC): 1 GiB = 1,024 MiB. Hard drive manufacturers use 1 GB = 1,000 MB, while Windows shows storage in GiB (1,024 MiB).
Hard drive manufacturers define 1 TB as 1,000,000,000,000 bytes. Windows shows storage in GiB where 1 GiB = 1,073,741,824 bytes. So 1 TB ÷ 1.0737 = ~931 GiB. The storage is the same — just different units.
MB (capital B) = Megabytes = storage. Mb (lowercase b) = Megabits = used for internet speed. 1 MB = 8 Mb. So a 100 Mbps connection downloads at about 12.5 MB/s.