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Base64 Encoder/Decoder

Encode text or binary data to Base64, or decode a Base64 string back to plain text. Runs entirely in your browser.

✓ FreeNo loginInstant results

Text Input

Base64 Output

How it works

Base64 encoding converts binary data into an ASCII string format using a set of 64 characters. It is commonly used to embed binary data in text-based formats like JSON, HTML, or email. This tool uses JavaScript's built-in btoa() and atob() functions to perform the conversion locally — your data never leaves your browser.

Paste your text or Base64 string

Choose Encode or Decode mode

Copy the instant result

🔤Base64 Encoder/Decoder

Base64 Encoder/Decoder

How it works