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Base64 Converter

Free tool for encoding and decoding Base64 strings with support for UTF-8 and Cyrillic characters. All computations happen locally in your browser, meaning it's fast, secure, and unlimited
📝 Note: Full UTF-8 is supported (Russian, emojis, and other characters). Encode - converts text to Base64. Decode - converts Base64 back to text.
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Base64 is a method of representing binary data as a text string made up of Latin letters, digits, and the characters +, /, and =. It's widely used for embedding files and images in JSON or XML, encoding email attachments, embedding images directly in CSS and HTML via data URIs, and for basic data obfuscation in configuration files and API requests.

Our online Base64 converter lets you quickly encode any text with full UTF-8 support, and decode previously encoded strings back to their original form. Simply paste your text, click "Encode" or "Decode", and get your result right away, with no limits on input size.

This tool is especially useful for developers, sysadmins, and anyone working with APIs, config files, authorization tokens (JWT), or email headers, where Base64-encoded data is common.

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