Bytes to bits
Type a value in bytes to see it in bits straight away, or type in the second box to convert back.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the bytes box.
- Read the result in bits as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
bit = B × 8
Multiply the value in bytes by 8 to get bits.
Example
To convert 25 B to bits: 25 × 8 = 200 bit.
Conversion table
| Bytes (B) | Bits (bit) |
|---|---|
| 1 | 8 |
| 2 | 16 |
| 3 | 24 |
| 5 | 40 |
| 10 | 80 |
| 20 | 160 |
| 25 | 200 |
| 50 | 400 |
| 100 | 800 |
| 250 | 2,000 |
| 500 | 4,000 |
| 1,000 | 8,000 |
About the units
- Byte
- A unit of storage equal to exactly 8 bits (an octet in IEC 80000-13), typically enough to store one Latin character.
- Bit
- The smallest unit of digital information, holding one of two values, 0 or 1. Eight bits make exactly one byte.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many bits are in one byte?
1 B = 8 bit exactly.
How do I convert bytes to bits?
Use bit = B × 8. For example, 25 B = 200 bit.
How many bytes are in one bit?
1 bit = 0.125 B.
Why does a 1 TB drive show about 931 GB on my computer?
Drive makers count 1 TB as 10^12 bytes, while Windows divides by 2^30 and labels the result GB even though it is really GiB. So 10^12 ÷ 1,073,741,824 gives about 931.32, and no space is missing.
What is the difference between a kilobyte and a kibibyte?
A kilobyte (kB) is a decimal unit of 1000 bytes and a kibibyte (KiB) is a binary unit of 1024 bytes. The same split applies to mega and mebi, giga and gibi, and the gap grows at each step.