Number Base Converter

Convert numbers between different bases.

Number
From Base
All examples use BASE_URL — set it to your deployment URL.
POST/api/number/convert
Convert a number between decimal, binary, octal, and hex bases.
const BASE_URL = "http://localhost:3000"; const res = await fetch(`${BASE_URL}/api/number/convert`, { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify({ value: "255", fromBase: 10 // 2, 8, 10, or 16 }) }); const data = await res.json(); // → { success: true, decimal: "255", binary: "11111111", // octal: "377", hex: "FF" }