How many bits are in a byte?

There are exactly 8 bits in 1 byte. This is the fundamental rule the converter is built on, so 1 KB (1000 bytes) equals 8000 bits.

How do I convert megabits to megabytes?

Divide megabits by 8. So 100 Mbit = 12.5 MB, which is why a 100 Mbit/s connection downloads at roughly 12.5 MB/s.

Why are network speeds in bits but file sizes in bytes?

Network and link speeds are quoted in bits per second (Mbit/s) by convention, while storage and files are measured in bytes (MB). Mixing them up makes a connection seem 8 times faster or slower than it is.

Does this use decimal (1000) or binary (1024) prefixes?

Decimal SI prefixes: 1 KB = 1000 bytes, 1 MB = 1,000,000 bytes. The base rule 1 byte = 8 bits still applies on top of that.

How is the conversion done?

Your value is first converted to a number of bits using its unit's multiplier, then divided by every other unit's multiplier to fill the table — so all eight units stay consistent.

Are the results accurate?

Yes. The converter uses the exact relationship 1 byte = 8 bits and decimal prefixes, computed in double precision and shown to several significant figures.

Is my data sent anywhere?

No. The conversion runs entirely in your browser — the value you type never leaves your device.

Bits to Bytes Converter

Convert between bits, bytes, kilobits (kbit), kilobytes (KB), megabits (Mbit), megabytes (MB), gigabits (Gbit) and gigabytes (GB). It is built for anyone reconciling a network speed quoted in bits with a file size quoted in bytes.

How it works

Every conversion rests on two facts: 1 byte = 8 bits, and decimal SI prefixes (1 KB = 1000 bytes, 1 MB = 1,000,000 bytes). The tool converts your value into a single base figure — total bits — using its unit’s multiplier, then divides that base by every other unit’s multiplier to fill the table:

bits = value × (multiplier for your unit) result in unit X = bits ÷ (multiplier for X)

Example

Enter 100 Mbit:

bits = 100 × 1,000,000 = 100,000,000 bits
bytes = 100,000,000 ÷ 8 = 12,500,000 bytes
megabytes = 12.5 MB

From	Equals
1 byte	8 bits
1 KB	8000 bits
8 Mbit	1 MB
100 Mbit	12.5 MB

All calculations happen locally in your browser — nothing is sent anywhere.