Convert Bits to Bytes (bit to B)
1 bit = 0.125 bytes (B). 1 B = 8 bit. Example: 8 bit = 8 × 0.125 = 1 B.
Also searched as bits to bytes, bit to byte, b to B and how many bytes in a bit.
1 bit = 0.125 B
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk bit to byte converter to paste a column from Excel.
How to Convert Bit to Byte
- 1 bit = 0.125 B
- 1 B = 8 bit
- Example: convert 8 bit to B: 8 bit = 8 × 0.125 B = 1 B
Formula
B = bit ÷ 8
Derivation from SI units:
- The basic unit of information: one binary digit, 0 or 1.
- 1 byte = 8 bits (an octet).
Both units are defined exactly, so the factor is exact. Bit definition: bit; Byte definition: byte.
Worked examples
- 8 bit make 1 B.
8 bit × 0.125 = 1 B - A 256 bit key is 32 B.
256 bit × 0.125 = 32 B
Bit to Byte conversion table
| Bits (bit) | Bytes (B) |
|---|---|
| 1 bit | 0.125 B |
| 4 bit | 0.5 B |
| 8 bit | 1 B |
| 16 bit | 2 B |
| 32 bit | 4 B |
| 64 bit | 8 B |
| 128 bit | 16 B |
| 256 bit | 32 B |
| 512 bit | 64 B |
| 1024 bit | 128 B |
Where it's used
Quantities in bits from encryption keys, registers and network protocols are converted to bytes for memory and file sizes. Divide by 8.
Bit to other data storage units
| Conversion | 1 bit equals |
|---|---|
| bit to byte | 0.125 B |
| bit to kilobyte | 0.000125 kB |
| bit to megabyte | 1.25 × 10⁻⁷ MB |
| bit to gigabyte | 1.25 × 10⁻¹⁰ GB |
| bit to terabyte | 1.25 × 10⁻¹³ TB |
| bit to megabit | 0.000001 Mbit |
| bit to kibibyte | 0.0001220703125 KiB |
| bit to mebibyte | 1.192092896 × 10⁻⁷ MiB |
Show 5 more units
| bit to gibibyte | 1.164153218 × 10⁻¹⁰ GiB |
|---|---|
| bit to kilobit | 0.001 kbit |
| bit to gigabit | 1 × 10⁻⁹ Gbit |
| bit to petabyte | 1.25 × 10⁻¹⁶ PB |
| bit to tebibyte | 1.136868377 × 10⁻¹³ TiB |
Frequently asked questions
How many bits are in a byte?
Eight: 1 byte = 8 bits, so 256 bits = 32 B.
How many bytes are in 1 bit?
1 bit = 0.125 B.
How do I convert bits to bytes?
Multiply the value in bit by 0.125, or divide it by 8. For example, 8 bit × 0.125 = 1 B.
Is the bit to B conversion exact?
Yes. Both units are defined exactly, and 1 bit is exactly 0.125 B.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 7 (SI prefixes); hertz, Table 4.
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Bits to Bytes (bit to B). Retrieved October 25, 2026, from https://scientificconverters.com/data-storage/bits-to-bytes/
IEEE
Scientific Converters, "Convert Bits to Bytes (bit to B)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/data-storage/bits-to-bytes/