Bytes to Bits Converter
Convert bytes to bits instantly with this free bytes to bits 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 byte in bits?
1 byte is equal to exactly 8 bits.
1 × 8 = 8 bits
Result
1 byte = 8 bits
Bytes to Bits formula
b = B × 8
The bytes to bits conversion factor is 8, which is exact by definition. 1 byte = 8 bits, and 1 bit = 0.125 bytes.
Worked examples
- 2 bytes = 16 bits — 2 × 8 = 16 bits
- 32 bytes = 256 bits — 32 × 8 = 256 bits
- 256 bytes = 2,048 bits — 256 × 8 = 2,048 bits
Bytes to Bits conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Bytes (B) | Bits (b) |
|---|---|
| 1 B | 8 b |
| 2 B | 16 b |
| 4 B | 32 b |
| 8 B | 64 b |
| 16 B | 128 b |
| 32 B | 256 b |
| 64 B | 512 b |
| 100 B | 800 b |
| 128 B | 1,024 b |
| 256 B | 2,048 b |
| 512 B | 4,096 b |
| 1,000 B | 8,000 b |
| 1,024 B | 8,192 b |
| 2,048 B | 16,384 b |
When you need to convert bytes to bits
- 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 byte = 8 bits, the answer should be larger 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
- Byte (B): Eight bits. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- 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.
Related conversions
Frequently asked questions
- What is 1 byte in bits?
- 1 byte is equal to 8 bits.
- How many bytes are in one bit?
- There are 0.125 bytes in 1 bit.
- How do you convert bytes to bits?
- Multiply the number of bytes by 8 — or use the formula b = B × 8.
- What is 32 bytes in bits?
- 32 bytes is 256 bits. 32 × 8 = 256 bits.
- Is the bytes to bits conversion exact?
- Yes. The relationship is fixed by definition, so 8 is an exact conversion factor — only the displayed result is rounded.