Base64 Encoder & Decoder – Encode or Decode Text & Files Online Free

Encode any text string to Base64 or decode Base64 back to readable text — instant results in your browser with complete privacy.

What is this tool?

A Base64 Encoder & Decoder is a free online tool that converts plain text or binary data to Base64 format — and decodes Base64 strings back to their original content. Base64 uses 64 printable ASCII characters to safely represent binary data in text-only channels such as email bodies, HTTP headers, JSON fields, and HTML attributes. Developers use it daily for tasks like embedding tokens, passing credentials, encoding file attachments, and debugging API payloads. The entire process runs client-side in your browser, so nothing is stored.

How to use this tool?

1. Select your operation: click "Encode" to go from text to Base64, or "Decode" to go from Base64 to plain text. 2. Type or paste your input text (or Base64 string) into the input field. 3. Click the "Encode" or "Decode" button to process instantly. 4. View the result in the output panel — it updates in real time. 5. Click "Copy" to copy the output to your clipboard in one click. 6. Paste the encoded or decoded text wherever you need it — API, code, config file, or email.

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