Skip to content
Utilerio
All endpoints

Number Base Converter

POST/api/v1/tools/number-base-converter

Convert numbers between decimal, hexadecimal, binary and octal instantly.

Authentication

Requires an API key in the X-API-Key header.

Try it

POST/api/v1/tools/number-base-converter

Parameters

valuestringrequired

Number to convert.

fromBaseintegeroptional

Source base (2–36). Default 10.

toBaseintegeroptional

Target base (2–36). Default 10.

Request body

{
  "value": "255",
  "fromBase": 10,
  "toBase": 16
}

Response codes

  • 200Success.
  • 400Invalid request — check your body or parameters.
  • 401Missing or invalid API key.
  • 403The API key is not scoped to this endpoint.
  • 429Rate limit exceeded — retry after a short wait.

Language

cURL

Request

curl -X POST https://utilerio.com/api/v1/tools/number-base-converter \
  -H "X-API-Key: YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"255","fromBase":10,"toBase":16}'

Response

{ "output": "ff", "decimal": 255 }