Base64 Encoder/Decoder
Instantly encode text to Base64 or decode Base64 strings. Perfect for developers, API testing, and data encoding. Works entirely in your browser.
Common Use Cases
API Authentication
Encode credentials and API keys for secure transmission in HTTP Authorization headers
Data Storage
Encode binary data, files, and images for storage and transmission over text-based protocols
Configuration Files
Encode sensitive configuration values and secrets in config files and environment variables
How It Works
Base64 is a binary-to-text encoding scheme that uses 64 printable ASCII characters. This encoder/decoder tool lets you quickly convert between regular text and Base64 format.
Encoding (Text → Base64):
- Converts each character to its binary representation
- Groups bits into 6-bit chunks
- Maps each chunk to a Base64 character
- Adds padding ("=") if needed
Decoding (Base64 → Text):
- Validates the Base64 format
- Maps Base64 characters back to 6-bit chunks
- Groups into 8-bit bytes
- Converts bytes back to text characters
Secure & Private
All encoding and decoding happens in your browser. Your data never leaves your device. 100% private and secure.
Instant Processing
Convert instantly as you type. Real-time encoding and decoding with zero delay. No server processing needed.
Format Validation
Automatic validation of Base64 format with clear error messages. Know instantly if your input is valid.