Bits to Bytes Converter
Convert bits to bytes instantly. Free bits to bytes converter for data size calculations.
Formula
bytes = bits / 8
Common Conversions
Bits and Bytes - 8:1 Ratio
1 byte = 8 bits. Divide bits by 8 to get bytes. So 1,024 bits = 128 bytes; 1 megabit = 125,000 bytes (1 million ÷ 8) = 122 KB binary. The byte is 8 bits because that's the historical word size of early computers (and a clean 256 = 2^8 unique values per byte).
Most useful for understanding internet speed claims. ISPs advertise speeds in megabits per second (Mbps); files download at megabytes per second (MB/s). 100 Mbps = 12.5 MB/s. So a 100 Mbps connection downloads a 1 GB file in about 80 seconds (1,024 MB ÷ 12.5 MB/s).
Common Bits to Bytes
| Bits | Bytes |
|---|---|
| 8 bits | 1 byte |
| 16 bits | 2 bytes |
| 32 bits | 4 bytes |
| 64 bits | 8 bytes |
| 1000 bits (1 kbit) | 125 bytes |
| 1 megabit (1 Mbit) | 125000 bytes (125 KB) |
| 1 gigabit | 125 megabytes |
| 10 gigabits | 1.25 gigabytes |
Frequently Asked Questions
Why do ISPs use Mbps instead of MB/s?
Marketing - bigger numbers look better. 100 Mbps is the same speed as 12.5 MB/s; the Mbps figure is 8x larger. Most internet quality discussions and review sites translate to MB/s for the practical 'how fast files download' picture.
What's a 64-bit operating system?
Refers to processor word size - 64-bit CPUs handle 64 bits (8 bytes) of memory address per operation, supporting much more RAM than 32-bit (4 bytes) systems. All modern desktops and phones are 64-bit; 32-bit systems are mostly legacy.
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