What Binary Converter helps you do

Translate a number between decimal, binary, hexadecimal and octal in one workspace. Choose the base you already have, run the conversion, and read the same value in the other three. It is useful for reading register dumps, debugging bit masks, or teaching how positional number systems work.

Every conversion runs in your browser with JavaScript number formatting. No value is sent to Haivix.

How it works

These converters apply a fixed factor or formula to the value you enter, inside the page. They do not fetch live rates, measurement standards or device data, so the result depends only on the number and the units you choose. Values are formatted to a handful of decimals, with scientific notation for very small or very large results. Where a formula needs a second input, such as voltage, hours or a power factor, the page asks for it rather than assuming a value. The factor itself comes from the unit definition, so it is the same today as it will be next year; only the input changes.

How to use Binary Converter

Type a value into the input field.
Choose the base that value is written in.
Run the conversion and read the other three bases.
Copy the representation you need, or replace the input to start again.

When to use it

Decode a hex byte from a packet capture or memory dump into binary to inspect its bits.
Convert a decimal permission or status code into hex for a config file.
Check a bitmask when you are not sure which flag a decimal value sets.
Read an octal file mode alongside its decimal and hex forms.
Translate a color channel or register value between bases.
Teach the relationship between place value and base.

When not to use it

Do not use it for floating-point values; it handles integers.
Do not expect two's-complement display for negative numbers.
Do not use it as an arbitrary-precision calculator.

Example

Decimal 255 is 11111111 in binary, FF in hex and 377 in octal. Decimal 10 is 1010 in binary, A in hex and 12 in octal. Decimal 64 is 1000000, 40 and 100. Binary 1010 is decimal 10 when the input base is set to binary.

What you can do with Binary Converter

Convert decimal, binary, hexadecimal and octal.
Choose the input base explicitly.
Show the value in all four bases at once.
Keep hexadecimal in uppercase.
Copy the representation you need.
Run the conversion locally with no upload.

Example: check the unit before trusting the number

Confirm the source unit and the target unit before reading the result. A correct number in the wrong unit is the most common conversion mistake, especially between US and imperial measures.

Sanity-check the magnitude with a rough mental estimate. If kilometres should be larger than miles and the result is smaller, the direction is reversed.

Round the result for the destination. A calculator can show six decimals, but an invoice, label or form usually needs two or three, and the rounding rule may be specified.

Keep the original value and unit in your notes. If the destination rejects the result, the source is the only way to recompute without guessing what was entered.

Check whether the unit has regional variants. Gallons, pints, tons and acres all have more than one definition, and picking the wrong one can shift the result by several percent without any arithmetic error.

If the answer will drive a purchase, a dose or a safety decision, verify it against a second source or the manufacturer's own table. A calculator removes arithmetic mistakes, not definition mistakes.

What to know before you start

Values are parsed as integers, so fractional input is truncated at the first invalid character.
Negative values keep a minus sign; there is no two's-complement display.
Very large inputs beyond the safe integer range are not intended as an arbitrary-precision calculator.
Binary output is not grouped into bytes or nibbles.

Common mistakes

Leaving the input base on decimal while typing a hex value.
Prefixing the value with 0x even though the base is selected separately.
Assuming the binary output is grouped into bytes; it is a continuous string.
Expecting a negative value to show in two's complement.

Troubleshooting

If the result looks wrong, check the selected input base.

If part of the input is ignored, it may contain a digit invalid for that base.

If a large value loses precision, it exceeds the safe integer range.

If the output is empty, the input may be blank or unparsable.

Binary Converter