Base64 Encoder & Decoder

Text

Paste normal text here to encode it as Base64.

Plain text input

Base64 / Base64URL

Paste encoded input here to decode it.

Base64 input

Base64 bytes0

Text bytes0

Ratio--

Base64 validity--

FAQ

When to encode? When sending binary data such as headers, tokens, or file content as text.
Why did decode fail? Check padding and allowed characters, or switch to lenient mode for pasted content with whitespace.
Privacy? Everything runs locally in your browser.