Number Base Converter

Convert numbers across common bases, inspect grouped bits, and view two's-complement or IEEE 754 representations.

Decimal

Binary

Octal

Hex

Bit interpretation

Bit width

Grouped binary: 1111 1111

Two's complement value: 255

73

Bits: 0100 0000 0100 1000 1111 0101 1100 0011

Sign: 0 · Exponent: 128 · Mantissa: 10010001111010111000011

Hex: 4048F5C3

Convert numbers between decimal, binary, octal, hex, and custom bases with bit-level helpers.

Accepted input

Accepts structured text such as JSON, CSV, XML, or mixed conversion inputs depending on the selected workflow.

How to use

Open Number Base Converter and paste, type, or upload the input it expects.
Adjust the available options until the preview or output reflects the workflow you need.
Use copy, download, or related follow-up tools once the result looks correct.

Tips

Pair it with other data tools from the same category when you need a broader workflow.
Pinned tools and recent history make it faster to return to repeated workflows.