How to convert bits to bytes
To convert a measurement in bits to bytes, multiply the value by 0.125. The conversion factor comes from the relationship between both units and the byte.
For example, to convert 5 bit to bytes: 5 × 0.125 = 0.625 B.
What is a bit?
A bit is the smallest unit of digital information, representing a single binary value of 0 or 1. Eight bits make one byte. The term 'bit', a contraction of 'binary digit', was coined by statistician John Tukey and popularized by Claude Shannon in his 1948 paper founding information theory. It is the fundamental unit on which all digital data is built.
Common uses of bits include: Network and internet speeds (Mbps, Gbps); Data transfer and bandwidth measurement; Encryption key lengths (128-bit, 256-bit); Color depth and audio bit rates.
What is a byte?
A byte is a unit of digital information consisting of 8 bits. It is the standard addressable unit of memory and can represent a single text character. The byte was defined by Werner Buchholz in 1956 during the design of the IBM Stretch computer. Eight bits became the de facto standard, enough to encode a character in early text encodings like ASCII.
Common uses of bytes include: File sizes and memory addressing; Text character storage (1 byte per ASCII character); Low-level programming and data structures; Baseline unit for all larger storage measures.
Bits to bytes worked examples
Here are some common values converted:
1 bit = 0.125 B 5 bit = 0.625 B 10 bit = 1.25 B 50 bit = 6.25 B 100 bit = 12.5 B
Frequently asked questions
How many bytes are in one bit?
One bit (bit) equals 0.125 bytes (B). Multiply any value in bits by 0.125 to convert to bytes.
How do I convert bits to bytes?
Multiply the value in bits by 0.125. For example, 5 bit × 0.125 = 0.625 B.
How do I convert bytes to bits?
Multiply the value in bytes by 8, or divide by 0.125. Use the swap button on the converter above to reverse the direction.
Is the bit to byte conversion exact?
Decimal units (KB, MB, GB) use powers of 1000 per SI; binary units (KiB, MiB, GiB) use powers of 1024 per IEC. Both are exact — just be sure you are using the right family, since storage is often sold in decimal but reported by operating systems in binary.
What is the formula for bits to bytes?
The formula is: B = bit × 0.125. This comes from the definition of both units relative to the byte.