Bytes to Bits Converter
Convert bytes to bits easily. Free bytes to bits converter for data size conversion.
Formula
bits = bytes × 8
Common Conversions
How to Convert Bytes to Bits
1 byte = 8 bits. Multiply bytes by 8 to get bits. So 100 bytes = 800 bits. The relationship is fixed across all computing systems - the byte was historically defined as 8 bits when 8-bit microprocessors became standard in the 1970s.
Used mainly when crossing between data storage measurements (which use bytes) and data transmission rates (which use bits). A 10 MB file = 80 megabits. Transmitted on a 100 megabit per second connection, that's 0.8 seconds of theoretical speed (real world: 1-2x slower due to overhead).
Common Bytes to Bits
| Bytes | Bits |
|---|---|
| 1 byte | 8 bits |
| 10 bytes | 80 bits |
| 100 bytes | 800 bits |
| 1024 bytes (1 KB) | 8192 bits (8 kbits) |
| 1 MB | 8 megabits |
| 1 GB | 8 gigabits |
| 1 TB | 8 terabits |
| 1 PB | 8 petabits |
Frequently Asked Questions
How does 'bit' relate to 'binary'?
Bit is short for 'binary digit' - a 0 or 1. Combining 8 bits gives 256 unique combinations (2^8) which is enough to represent characters in ASCII or numbers 0-255. The byte is the smallest practically-useful storage unit; bits matter for transmission speeds and individual flag values.
Why is 'b' lowercase for bits, capital for bytes?
Lowercase 'b' = bit. Capital 'B' = byte. So 'Mbps' (lowercase b) = megabits per second; 'MB/s' (capital B) = megabytes per second. The case distinction matters - getting it wrong off by 8x.
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