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Base64 Encoder / Decoder

Encode text to Base64 or decode Base64 strings back to plain text.

What the tool does

Base64 Encoder / Decoder converts text to Base64 and back. Handy for data URLs, simple transport encoding, and debugging encoded payloads.

How to use it

  1. Paste plain text to encode, or Base64 to decode.
  2. Run encode or decode.
  3. Copy the result.

Supported formats

  • Plain text ↔ Base64 strings

Privacy & security

This tool runs entirely in your browser. Your data never leaves your device — nothing is uploaded to our servers.

FAQs

Is Base64 encryption?
No. Base64 is encoding, not encryption. Anyone can decode it. Do not use it to hide secrets.
Why do encoded strings get longer?
Base64 represents binary/text using a 64-character alphabet and typically expands size by about a third.
Is my text uploaded?
No. Encoding/decoding is local.