Number Base Converter API

Convert a whole number of any size between binary, octal, decimal, hexadecimal and any base from 2 to 36.

POST /api/v1/tools/number-base-converterMCP number_base_converterDeveloper Tools

Convert whole numbers between binary, octal, decimal, hex and any base from 2 to 36. Exact for huge and negative numbers, with prefixes and digit grouping.

Input

Send these as a JSON object. Unknown fields are rejected.

input: The number. Spaces, underscores and (in decimal) commas are ignored; 0x, 0b and 0o prefixes are understood. (string, up to 10000 characters, required)
from: Base of the input, 2 to 36. With 10, a 0x/0b/0o prefix switches to that base. (integer, 2 to 36, default 10)
to: An extra target base (2 to 36) besides 2, 8, 10 and 16. (integer, 2 to 36)
group: Separate digit groups (4 for binary/hex, 3 for octal/decimal). (boolean, default false)
uppercase: Uppercase letter digits (A–Z). (boolean, default false)

Try it in the browser JSON Schema Get an API key

curl https://pithlab.com/api/v1/tools/number-base-converter \n  -H "Authorization: Bearer $PITHLAB_KEY" \n  -H "Content-Type: application/json" \n  -d '{"input":"255","from":10,"to":36}'

Example response

{
  "ok": true,
  "result": {
    "detectedBase": 10,
    "conversions": [
      {
        "base": 2,
        "label": "Binary (base 2)",
        "value": "11111111"
      },
      {
        "base": 8,
        "label": "Octal (base 8)",
        "value": "377"
      },
      {
        "base": 10,
        "label": "Decimal (base 10)",
        "value": "255"
      },
      {
        "base": 16,
        "label": "Hexadecimal (base 16)",
        "value": "ff"
      },
      {
        "base": 36,
        "label": "Base 36",
        "value": "73"
      }
    ]
  }
}