Convert bytes to bits
Enter a value in bytes to convert it to bits.
bytes to bits reference
| bytes | bits |
|---|---|
| 1 B | 8 bit |
| 2 B | 16 bit |
| 5 B | 40 bit |
| 10 B | 80 bit |
| 25 B | 200 bit |
| 50 B | 400 bit |
| 100 B | 800 bit |
The conversion factor
One byte is 8 bits. So to convert, multiply your figure in bytes by 8. To go the other way, multiply bits by 0.125, or use the bits to bytes converter.
Doing it in your head
For a quick estimate, round the factor: roughly "times 8". Use the exact converter above when the number matters.
Where this conversion comes up
Storage and download sizes, data caps, and the decimal-vs-binary gap that makes a “1 TB” drive show as about 931 GiB.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many bits are in a byte?
1 byte = 8 bits.
What is the formula to convert bytes to bits?
Multiply the number of bytes by 8. To go back the other way, multiply bits by 0.125.
What is 10 bytes in bits?
10 bytes = 80 bits. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.