Base64 Encoder / Decoder

Encode plain text into Base64 or decode Base64 back into readable text. Base64 is commonly used to safely embed data in URLs, JSON, emails and configuration files. Conversion happens instantly in your browser, so nothing you type is sent to a server.

How to Use Base64 Encoder / Decoder

1. Paste or type your text into the box.
2. Click Encode to Base64 to convert text to Base64, or Decode from Base64 to reverse it.
3. Copy the result with one click.

Key Features

• Encode any text to Base64 instantly
• Decode Base64 back to its original text
• Supports full Unicode text, not just basic ASCII
• One-click copy of the result
• Runs entirely in your browser — no server processing

Who It's Useful For

• Developers encoding strings for APIs, URLs or config files
• Anyone decoding a Base64 string they received
• Students learning how Base64 encoding works
• QA testers inspecting encoded tokens or payloads

Practical Examples

• Encode an API key or credential string before placing it in a config file
• Decode a Base64 string found in a JWT or email header
• Encode a short message to safely pass it through a URL parameter
• Check what a Base64-encoded value actually says

Tips for Better Results

• Base64 is encoding, not encryption — don't use it to protect sensitive data
• If decoding fails, check for missing characters or extra whitespace in the input
• Use the copy button to grab the result without manual selection

FAQ

Related Tools & Guides

• JSON Formatter & Validator
• Percentage Calculator
• Password Generator