Byte to Bit Converter
One Byte equals 8 Bit (1 B = 8 bit). Multiply a Byte value by 8 to get the equivalent in Bit. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.
Formula
bit = B × 8
Multiply the Byte value by 8 to get the equivalent value in Bit.
Example Conversions
1 Byte (B)
8 Bit (bit)
5 Byte (B)
40 Bit (bit)
10 Byte (B)
80 Bit (bit)
25 Byte (B)
200 Bit (bit)
100 Byte (B)
800 Bit (bit)
Conversion Table
| Byte (B) | Bit (bit) |
|---|---|
| 0.1 | 0.8 |
| 0.5 | 4 |
| 1 | 8 |
| 2 | 16 |
| 5 | 40 |
| 10 | 80 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
| 250 | 2000 |
| 500 | 4000 |
| 1000 | 8000 |
How to Convert Manually
Use these steps to convert Byte values to Bit without the calculator.
- Write down the value in Byte (B) that you want to convert.
- Multiply that value by 8.
- For example, 10 Byte × 8 = 80 Bit.
- Label the result as Bit (bit).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Byte and one Bit.
About Byte and Bit
The byte is 8 bits, the basic addressable unit of computer storage. One byte holds a single ASCII character, and all file sizes build up from it. The bit is the smallest unit of digital information — a single 0 or 1. Network speeds are quoted in bits per second, which is why a '100 Mb' connection downloads at about 12.5 MB per second. One Byte equals 8 Bit (1 B = 8 bit). Byte to Bit conversion comes up most often in file size fundamentals and in network protocol fields, typically when figures need restating for network bandwidth ratings.
Precision and Rounding: This converter uses the binary convention (1 KB = 1,024 bytes), which matches how operating systems report file and memory sizes. Storage manufacturers label drives with decimal units (1 GB = 1,000,000,000 bytes), which is why a '1 TB' drive shows roughly 931 GB in your OS — check which convention your source uses.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15 Byte equals 120 Bit.
15 B × 8 = 120 bit
FAQ
How do I convert Byte to Bit?
Multiply the Byte value by 8 to get the equivalent value in Bit.
What is the formula for Byte to Bit?
The formula is bit = B × 8.
How many Bit are in 1 Byte?
1 Byte equals 8 Bit.
Can I convert Bit back to Byte?
Yes. 1 Bit equals 0.125 Byte, and the related converter can reverse the calculation.
What are common names for Byte and Bit?
Byte is shown as B and may also be searched as bytes. Bit is shown as bit and may also be searched as bits.
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