Base64 Encoder / Decoder

Encode plain text into Base64, or decode a Base64 string back into readable text. All processing happens locally in your browser.

Input

Output

How to Use

Paste your plain text and click "Encode to Base64" to get an encoded string.
Or paste a Base64 string and click "Decode from Base64" to get the original text back.

What Is Base64?

Base64 is an encoding scheme that converts binary or text data into an ASCII string using 64 characters (A–Z, a–z, 0–9, +, /). It is commonly used to safely embed data — such as images, files, or credentials — inside text-based formats like JSON, XML, HTML, or email (MIME). Base64 is not encryption; it is easily reversible and should never be used to protect sensitive information.

Frequently Asked Questions

Is Base64 secure for passwords?

No. Base64 is simply an encoding format, not encryption. Anyone can decode it instantly. Never use Base64 alone to protect sensitive data.

Why do I get an error when decoding?

This happens if the input is not valid Base64 — for example, if it contains characters outside the Base64 alphabet or has incorrect padding.