Base64 Encoder & Decoder
Convert text to Base64 and decode Base64 to text instantly. Fast, free, and completely private.
Supports UTF-8 encoding, URL-safe Base64, and file conversion. All processing happens in your browser - your data never leaves your device.
What is Base64 Encoding?
Base64 encoding converts binary data into a text format using 64 ASCII characters:
- Uppercase letters: A-Z (26 characters)
- Lowercase letters: a-z (26 characters)
- Numbers: 0-9 (10 characters)
- Symbols: + and / (2 characters)
- Padding: = (for alignment)
- Embedding images in HTML/CSS (data URIs)
- Sending binary data in JSON APIs
- Email attachments (MIME encoding)
- HTTP Basic Authentication
- JWT token payloads
- Storing binary in databases
Text Input:
Hello WorldBase64 Output:
SGVsbG8gV29ybGQ=JSON Data:
{"user":"admin","pass":"123"}Base64 Output:
eyJ1c2VyIjoiYWRtaW4iLCJwYXNzIjoiMTIzIn0=Important: Base64 is NOT Encryption
Base64 is an encoding scheme, not a security measure. Anyone can decode Base64 data without any secret key. Never use Base64 to protect passwords, API keys, or sensitive information. For security, use proper encryption methods like AES, RSA, or bcrypt for passwords.
Base64 FAQ
Why Use Our Base64 Tool?
100% Private
All encoding/decoding happens in your browser. No data is ever sent to our servers.
Instant Results
Real-time conversion as you type. No waiting, no page reloads.
Developer Friendly
UTF-8 support, URL-safe option, and clean output ready for your code.