🔡 BASE64 ENCODE & DECODE
Base64 Encode & Decode — Instant, In Your Browser
Convert text to Base64 or decode a Base64 string back to readable text. Nothing you type is ever sent to a server.
Base64 Encode / Decode
Text ⇄ Base64, entirely in your browser
Base64 Output
SGVsbG8sIFByaW1lIENhbGN1bGF0b3Ih
24 input characters → 32 output characters
How Base64 Works
🔠 64 Safe Characters
A-Z, a-z, 0-9, plus + and / — 64 symbols that survive being copied through email, URLs, and JSON without corruption.
📦 3 Bytes → 4 Characters
Every 3 bytes of raw data map onto exactly 4 Base64 characters, which is why encoded output always runs about a third longer than the original.
🔓 Not Encryption
No key, no secret — anyone can decode Base64 instantly. It solves a compatibility problem, not a privacy one.
🌍 Where You'll See It
Embedded images in HTML/CSS, email attachments, API tokens, and data URIs all commonly use Base64 under the hood.
— FAQ