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Base64 Encoder / Decoder

Convert text to Base64 or decode Base64 back to text. Works with Unicode characters and validates input before decoding.

Paste text or Base64
Output appears here. Encode to get Base64 or decode to get text.

Unicode safe. Invalid Base64 shows an error. Runs in your browser.

HOW TO USE

  1. 1Type or paste the text you want to encode, or the Base64 string you want to decode.
  2. 2Click Encode to turn the text into Base64.
  3. 3Click Decode to turn Base64 back into readable text.
  4. 4Invalid Base64 input shows a clear error instead of garbage output and Unicode text encodes correctly.

EXAMPLE

INPUT

Hello, World!

OUTPUT

SGVsbG8sIFdvcmxkIQ==

FAQ

What is Base64?
Base64 is a way of representing binary or text data using only the characters A–Z, a–z, 0–9, +, / and = padding. It is commonly used to send data through channels that only support text, like URLs or emails.
Is Base64 the same as encryption?
No. Base64 is an encoding, not encryption. Anyone can decode it. Never use Base64 to hide sensitive data.
Why does decoding sometimes fail?
The input is not valid Base64. For example, it contains characters outside the Base64 alphabet or has incorrect padding.
Can I encode emoji or non-English text?
Yes. The tool is Unicode-safe, so emoji, accented characters and non-Latin scripts encode and decode correctly.

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