Online Base64 Encoder and Decoder — Free Base64 Tool
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's widely used on the web for embedding images inline in HTML/CSS, encoding credentials for HTTP Basic Authentication, and transmitting data through systems that only support text.
Our Base64 Encoder/Decoder lets you convert any text to Base64 and decode Base64 strings back to their original form. It's fast, free, and works entirely in your browser.
Why Use Our Base64 Tool?
- Instant results — Encode or decode with a single click
- Completely private — All processing happens locally in your browser. Your data is never uploaded to any server.
- Unicode support — Handles special characters, emojis, and non-Latin scripts correctly
- Copy to clipboard — One-click copy for the output
How to Use This Base64 Encoder/Decoder
- Switch to Encode or Decode mode
- Paste your text or Base64 string into the input box
- Click Encode or Decode
- Copy the result to your clipboard
Base64 Encoding Examples
| Text | Base64 |
|---|---|
Hello World | SGVsbG8gV29ybGQ= |
admin:password | YWRtaW46cGFzc3dvcmQ= |
{"key":"value"} | eyJrZXkiOiJ2YWx1ZSJ9 |
Frequently Asked Questions
Is this Base64 tool free?
Yes, completely free. No registration or credit card required.
Is my data secure?
Absolutely. All encoding and decoding runs locally in your browser. Your data never leaves your device.
What can Base64 be used for?
Base64 is commonly used for embedding images in HTML/CSS, encoding credentials for HTTP authentication, storing binary data in JSON, and transmitting data through text-only channels like email.
Does this support Unicode?
Yes. Our tool uses a Unicode-safe encoding method that properly handles international characters and emojis.