Bit to Byte Converter

What the Bit to Byte Converter does

Bit to Byte Converter: 1 b = 0.125 B, so multiply a bit value by 0.125 to get byte, or divide to go back. Example: 1 b = 0.125 B.

Give the Bit to Byte Converter your Value, From and To and it works out Result, How it was calculated and Reverse conversion. There is no submit step; the numbers move as you adjust them.

It is mostly used by engineers checking a datasheet. Converting once from the original figure beats chaining approximations.

Nothing leaves the tab. You can watch your browser network panel while you use it and see for yourself.

The field table, the method and a worked example are documented after the tool for anyone who wants to check the working.

What do the Bit to Byte Converter fields mean?

The Bit to Byte Converter uses 3 inputs. Rather than an empty form you get a filled one, useful when you only want to test a single change.

How does the Bit to Byte Converter work?

Both units are converted through data's base unit (byte), so any of the 11 units in the dropdowns can be paired in either direction without loss of accuracy.

Every factor here is the defined one, not a textbook approximation. That matters more than it sounds: rounding a factor early is the usual reason two converters disagree in the fourth decimal place.

Worked example

These are the values the Bit to Byte Converter loads by default, and the result it produces from them. The defaults produce the result shown here; change any of them and the answer moves.

Bits and bytes

1 byte equals exactly 8 bits. A fixed, unambiguous relationship (unlike the decimal/binary prefix issue above), but the bit/byte distinction itself is a very common source of confusion, especially around internet speed.

Worth knowing

• Internet connection speeds are conventionally advertised in megabits per second (Mbps, lowercase "b" for bits), while file sizes are measured in megabytes (MB, uppercase "B" for bytes): an "100 Mbps" connection downloads at a theoretical maximum of about 12.5 MB/s, not 100 MB/s, because of this 8× unit gap.
• This mismatch is a common source of consumer disappointment: a 1 GB file over a "100 Mbps" connection takes roughly 80 seconds at best (ignoring overhead), not the roughly 10 seconds a naive reading of "100 per second" might suggest.
• Storage and file sizes are essentially always quoted in bytes (B, kB, MB, GB); it’s specifically network and data-transfer speeds where bits (b, kb, Mb) are the convention: knowing which context you’re in resolves most of the confusion.

Definitions: BIPM SI Brochure · NIST reference on units

How to use it

1. Set Value.
2. Pick a value for From: the options are Bit (b), Byte (B), Kilobyte (1000 B) (kB), Megabyte (1000 kB) (MB), Gigabyte (1000 MB) (GB) or Terabyte (1000 GB) (TB).
3. Pick a value for To: the options are Bit (b), Byte (B), Kilobyte (1000 B) (kB), Megabyte (1000 kB) (MB), Gigabyte (1000 MB) (GB) or Terabyte (1000 GB) (TB).
4. Skip the submit button; there is not one. Editing is enough.
5. Check Result, How it was calculated and Reverse conversion on the right.
6. If you need a record, Copy Link saves the inputs and Print produces a clean page.

What this tool does not do

• Conversion factors use SI definitions; some industries use their own rounded factors.
• Repeated conversions compound rounding, so convert once from the original value where possible.
• Values outside the documented ranges are rejected rather than approximated.
• The tool trusts your numbers completely, so a mis-keyed digit propagates straight through.

Frequently asked questions

Related tools