Byte to Bit Converter

Data Converter

21 units available

Decimals:

From

To

8

1 B = 8 b

Formula:

b = B × 8

With your value: 1 B = 8 b

How big is that?

Everyday references on a logarithmic scale, all expressed in byte so you can sanity-check the result.

Your value0.125 B

Plain-text email (2.0e+3× your value)250 B

Phone photo (4.0e+6× your value)5.00e+5 B

MP3 song (5.0e+6× your value)6.25e+5 B

CD-ROM (7.0e+8× your value)8.75e+7 B

HD movie (4.0e+9× your value)5.00e+8 B

Other Byte to Bit conversions

2 B to b 3 B to b 4 B to b 5 B to b 6 B to b 7 B to b 8 B to b

Byte to Bit Conversion Table

Byte (B)	Bit (b)
0.5	4
1	8
2	16
5	40
10	80
15	120
20	160
25	200
50	400
100	800
250	2,000
500	4,000
1000	8,000

Bit to Byte Conversion Table

Bit (b)	Byte (B)
0.5	0.0625
1	0.125
2	0.25
5	0.625
10	1.25
15	1.875
20	2.5
25	3.125
50	6.25
100	12.5
250	31.25
500	62.5
1000	125

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Byte (B)

Data

Conventional value

One byte is eight bits (octet) in all modern computing standards.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

Bit (b)

Data

Conventional value

Decimal prefixes (kB, MB) are powers of 1000; binary prefixes (KiB, MiB) are powers of 1024 as standardised by IEC 80000-13.

Source: IEC 80000-13:2008, Quantities and units — Part 13: Information science and technology

International Electrotechnical Commission · Reviewed 2026-07-01

How to Convert Byte to Bit

To convert from Byte (B) to Bit (b), multiply the value by 8.

Formula: b = B × 8

Reverse: B = b × 0.125

Step-by-Step Example

Start with your value in Byte. For example: 5 B
Multiply by the conversion factor: 5 x 8
The result is: 40 b

About Byte

The byte (B) is a unit of digital storage. One byte equals 1 byte. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

About Bit

The bit (b) is a unit of digital storage. One bit equals 0.125 bytes. UnitConvertLab converts it against every other data unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: data calculations, engineering and science, education.

Frequently Asked Questions

How many Bit are in 1 Byte?

There are exactly 8 Bit in 1 Byte. This means the conversion factor from Byte to Bit is 8.

What is the formula to convert Byte to Bit?

The formula to convert Byte to Bit is: b = B × 8. For example, to convert 10 Byte to Bit, you would multiply 10 by 8.

What is a Byte?