Bits to Bytes Converter
Convert bits to bytes instantly with this free bits to bytes converter. Enter any value to get an accurate data storage conversion, plus the formula, the conversion factor and a full reference table.
What is 1 bit in bytes?
1 bit is equal to exactly 0.125 bytes.
1 ÷ 8 = 0.125 bytes
Result
1 bit = 0.125 bytes
Bits to Bytes formula
B = b ÷ 8
The bits to bytes conversion factor is 0.125, which is exact by definition. 1 bit = 0.125 bytes, and 1 byte = 8 bits.
Worked examples
- 2 bits = 0.25 bytes — 2 ÷ 8 = 0.25 bytes
- 32 bits = 4 bytes — 32 ÷ 8 = 4 bytes
- 256 bits = 32 bytes — 256 ÷ 8 = 32 bytes
Bits to Bytes conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Bits (b) | Bytes (B) |
|---|---|
| 1 b | 0.125 B |
| 2 b | 0.25 B |
| 4 b | 0.5 B |
| 8 b | 1 B |
| 16 b | 2 B |
| 32 b | 4 B |
| 64 b | 8 B |
| 100 b | 12.5 B |
| 128 b | 16 B |
| 256 b | 32 B |
| 512 b | 64 B |
| 1,000 b | 125 B |
| 1,024 b | 128 B |
| 2,048 b | 256 B |
When you need to convert bits to bytes
- Checking whether a file fits inside a storage or upload limit.
- Working out how much of a mobile data allowance a download will use.
- Reconciling the capacity printed on a drive with the smaller figure the operating system reports.
Common mistakes to avoid
- Dividing when you should multiply. Because 1 bit = 0.125 bytes, the answer should be smaller than the number you started with.
- Treating 1 kB as 1,024 bytes. Storage and network figures use decimal units of 1,000; operating systems usually report binary units of 1,024, which is why a 1 TB drive shows as about 931 GiB.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
Round to two decimals for human-readable sizes. When you are checking a hard limit, use the exact figure: a file 0.4% over an upload cap still fails.
How these units are defined
- Bit (b): The smallest unit of digital information. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- Byte (B): Eight bits. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 bit in bytes?
- 1 bit is equal to 0.125 bytes.
- How many bits are in one byte?
- There are 8 bits in 1 byte.
- How do you convert bits to bytes?
- Multiply the number of bits by 0.125 — or use the formula B = b ÷ 8.
- What is 32 bits in bytes?
- 32 bits is 4 bytes. 32 ÷ 8 = 4 bytes.
- Is the bits to bytes conversion exact?
- Yes. The relationship is fixed by definition, so 0.125 is an exact conversion factor — only the displayed result is rounded.