Convert Text to Base64 and Back
The Base64 Encoder & Decoder allows you to encode text into Base64 strings and decode Base64 strings back to their original text.
Base64 is commonly used to embed text or data in formats like HTML, CSS, JSON, or emails. This tool performs all operations directly in your browser.
What This Tool Can Do
• Encode text into Base64
• Decode Base64 strings to retrieve original text
• Works entirely in your browser
• Instantly copy results to clipboard
• Optionally use URL-safe Base64 encoding
Base64 is a reversible encoding scheme: the same input produces a consistent Base64 output, and the original text can be reconstructed from the encoded string.
Base64 Encoder / Decoder
UTF-8 text only. Data is processed in your browser and never stored.
Mode
Input
0 chars
Output
What Is Base64?
Base64 is a method of encoding binary data into ASCII text, using 64 printable characters: A–Z, a–z, 0–9, +, and /.
Key properties:
- Reversible (encoded data can be decoded back)
- Text-safe (suitable for inclusion in text-based formats)
- Expands data size by ~33%
Example:
Input: techsynq
Base64: dGVjaHN5bnE=
Best Practices
• Base64 is encoding, not encryption — it does not protect data
• Use it only for text transport or embedding
• Do not rely on Base64 to hide sensitive information