Effortlessly encode and decode text using Base64 encoding for secure and efficient data handling.
Select the mode.
Encode text to Base64 or decode Base64 back to plain text instantly. Base64 represents binary data using 64 printable ASCII characters, which makes it the standard way to embed data in JSON, XML, email (MIME), data URIs, and HTTP headers.
This tool converts in both directions as you type and runs entirely client-side, so tokens, credentials, and payloads you paste are never transmitted anywhere.
Base64 is a scheme that represents binary data using 64 printable characters (A–Z, a–z, 0–9, + and /). It lets arbitrary data travel safely through systems designed for plain text, such as email and JSON.
No. Base64 is an encoding, not encryption — anyone can decode it. Never rely on Base64 to protect secrets; use real encryption for sensitive data.
Base64 encodes every 3 bytes of input as 4 characters of output, so encoded data is roughly 33% larger than the original.