Base64 Converter

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data using only 64 printable ASCII characters (A–Z, a–z, 0–9, +, /). It allows binary data to be safely transmitted over channels that only support text, such as email or URLs.

The encoded output is approximately 33% larger than the original. Base64 is not encryption — it is purely an encoding scheme and can be decoded by anyone.

How to Use

1. Paste your text or Base64 string into the input area.
2. Click Encode to convert text to Base64.
3. Click Decode to convert Base64 back to text.
4. Use Copy to copy the result to clipboard.

All encoding and decoding happens instantly in your browser — no uploads, no tracking.

Common Use Cases

• Encode images as data URIs in CSS/HTML
• Transmit binary data in JSON APIs
• Encode email attachments (MIME)
• Decode JWT token payloads
• Store binary data in text-only databases
• Obfuscate strings in web applications