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1 bit = 0.125 B
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B = bit ÷ 8
How to convert
To convert bits to bytes, divide the value by 8. For example, 16 bit = 2 B.
Conversion table
| Bits (bit) | Bytes (B) |
|---|---|
| 1 bit | 0.125 B |
| 8 bit | 1 B |
| 16 bit | 2 B |
| 32 bit | 4 B |
| 64 bit | 8 B |
| 100 bit | 12.5 B |
| 128 bit | 16 B |
| 256 bit | 32 B |
| 1,000 bit | 125 B |
| 1,024 bit | 128 B |
About these units
Storage sizes come in two systems. Decimal (SI) units step by 1,000: 1 KB = 1,000 bytes, 1 MB = 1,000 KB and 1 GB = 1,000 MB. Binary (IEC) units step by 1,024: 1 KiB = 1,024 bytes and 1 MiB = 1,024 KiB. Drive makers and most specifications use decimal units, while Windows and many programs count in binary but label the result KB, MB or GB, which is why a 1 TB drive shows up as about 931 GB. One byte is 8 bits.
FAQ
› How do I convert bit to B?
1 bit = 0.125 B. To convert, divide the value by 8: 16 bit = 2 B.
› What is 1 B in bit?
1 B = 8 bit. The reverse formula is bit = B × 8.
› Is 1 MB 1,000 KB or 1,024 KB?
In SI units 1 MB is 1,000 KB. The 1,024-based unit has its own name, the mebibyte (MiB). Some software still writes MB for 1,024 KB, so check which convention a number uses.
› Why does a new drive show less space than advertised?
The box uses decimal gigabytes (10⁹ bytes) while the operating system reports binary gibibytes (2³⁰ bytes) labeled GB. A 500 GB drive is about 465.66 GiB; no space is missing.