base0x

Convert bases & encodings instantly

Binary, decimal, octal, hex, text, Base64, and URL — all computed locally in your browser.

Client-side only · no tracking · no uploads

01 — Bases

Number base converters

Pick a source base, then jump straight to any target — text, binary, octal, decimal, or hex.

20 conversions

chars

From Text

base-2

From Binary

base-8

From Octal

base-10

From Decimal

base-16

From Hexadecimal

02 — Encoding

Encoding tools

Text transforms for the formats you use in APIs, tokens, and URLs.

Base64 Encode / Decode

Encode and decode with UTF-8 and URL-safe alphabets.

URL Encode / Decode

Percent-encode strings for URLs, or decode them back.