Base64 Encode / Decode
Enter text or Base64
Base64 encodes binary or text data into a plain ASCII string that survives systems built for text, such as data URIs, email and JSON. It is encoding for safe transport, not encryption.
Encode or decode instantly
Switch direction to turn readable text into Base64 or back again, with full Unicode support. Everything is computed locally, so nothing you paste is ever sent to a server.
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What Is a Base64 Encode and Decode Tool?
A Base64 Encode and Decode tool converts text or binary data into a plain-text representation and reverses valid Base64 strings back into readable content. Base64 uses a defined set of ASCII characters, allowing data to pass through systems designed primarily to process text.
Base64 is commonly used when data must be included in email content, JSON payloads, data URIs, configuration values or other text-based structures. It changes how the data is represented without changing its underlying meaning.
How to Encode or Decode Base64
Enter or paste your content into the input area and select the required operation. Choose encoding to transform readable text into a Base64 string, or decoding to convert a valid Base64 value back into its original text.
The tool supports Unicode content, allowing text containing accented letters, Turkish characters and symbols to be processed correctly. The result appears immediately and can be copied into a development environment, API request, configuration file or document.
A Base64 string must follow the expected structure to be decoded successfully. Missing characters, invalid symbols or incorrect padding can produce an error or an incomplete result. The RFC 4648 specification defines the standard Base64 alphabet and padding rules used by compatible systems.
Is Base64 Encryption?
Base64 is an encoding method, not encryption. Encoded content can be returned to its original form without a secret password or cryptographic key. It should therefore not be used to conceal passwords, personal data, access credentials or other sensitive information.
Its purpose is safe data representation and transport rather than confidentiality. When information must be protected from unauthorised access, an appropriate encryption method and secure transmission protocol should be used.
Browser-Based Base64 Conversion
All encoding and decoding operations take place locally in your browser. The content entered into the tool is not sent to a remote server, making it practical for processing internal text, development values and unpublished data directly on your device.
