Convert Bit to Byte (b → B)
The bit is the smallest unit of digital information, used in network speeds and information-theory calculations.
Bit to Byte Conversion Table
10 common values| Bit | Byte |
|---|---|
| 1 b | 0.125 B |
| 10 b | 1.25 B |
| 100 b | 12.5 B |
| 500 b | 62.5 B |
| 1,000 b | 125 B |
| 5,000 b | 625 B |
| 10,000 b | 1,250 B |
| 50,000 b | 6,250 B |
| 100,000 b | 12,500 B |
| 500,000 b | 62,500 B |
How to Convert Bit to Byte Manually
Step by StepConverting bits to bytes is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.
- 1Take your value in bitsStart with the number of bits (b) you want to convert.
- 2Multiply by 0.125The conversion factor from b to B is 0.125. Multiply your value by this number.
- 3Read the result in bytesThe result is your value in bytes (B).
Formula
Multiply the value in bits by 0.125. For the reverse direction, multiply by 8.
B = b × 0.125b = B × 8Tips
Use these in everyday conversions- 8 bits = 1 byte.
- Mbps ≠ MB/s — divide by 8 to get bytes per second.
- Encryption strength often given in bits (128, 256).
Common Mistakes
Avoid these- Mixing b (bit) and B (byte) — 8× difference.
- Thinking a 1 Gbps link delivers 1 GB/s — it's 125 MB/s.
- Reading "256-bit encryption" as "256-byte" — totally different strength.
About Bit and Byte
What is the Bit?
The bit is the smallest unit of digital information, representing a single binary choice between two states (typically 0 or 1, true or false, on or off). Coined by mathematician John Tukey in 1947 (from 'binary digit'), and formalized by Claude Shannon in his 1948 information theory papers, the bit is the foundation of all modern computing, telecommunications, and information storage. Bit-rates measure data transmission speeds (megabits per second, Mbps, for internet connections), and information-theory entropy is calculated in bits. A single yes/no question carries 1 bit of information; an 8-bit byte represents 256 possible values. The bit relates to the byte (8 bits = 1 byte), the kilobit (1,000 bits = 1 kbit, used in telecom), and the kibibit (1,024 bits = 1 Kibit, used in computing). Modern fiber-optic networks transmit terabits per second.
- Network throughput (bps, Mbps, Gbps)
- Cryptography key lengths (e.g., 256-bit AES)
- Compression algorithms and file header specs
Home fibre: 100 Mbps = 100,000,000 bps. AES key: 256 bits. MP3 bit rate: 128–320 kbps.
What is the Byte?
The byte equals 8 bits and is the smallest addressable storage unit in modern computing and digital systems. Byte-sized addresses are universal in computer architectures from microcontrollers to supercomputers, making the byte the fundamental block of memory and storage. A single ASCII character is 1 byte (256 possible values), basic UTF-8 characters use 1–4 bytes, and a UTF-16 character uses 2 bytes. File sizes, RAM capacity, and disk space are all measured in bytes and their multiples. The byte relates to the bit (1 byte = 8 bits), the kilobyte (1,000 or 1,024 bytes — see decimal vs. binary), the kibibyte (1,024 bytes, the strict computing standard), and larger multiples (MB, GB, TB). Note: storage manufacturers use decimal (1 GB = 10⁹ bytes), while operating systems often use binary (1 GiB = 2³⁰ bytes), causing the famous discrepancy where a '1 TB drive' shows about 931 GB free.
- File sizes everywhere (documents, images, video)
- RAM and storage capacity
- Character encoding in programming
An ASCII character: 1 byte. A short text message: few hundred bytes. Uncompressed photo: few MB.