Free Base64 Encoder & Decoder
Encode plain text or decode Base64 strings safely client-side.
How to Use Instructions:
- Paste or type your string into the input text box.
- Click Encode to Base64 to convert plain text, or click Decode from Base64 to convert encoded text back.
- View and copy your generated result directly from the output box below.
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About This Tool
Encode text or decode Base64 strings directly in your browser. Base64 is commonly used to represent binary or textual data using a limited ASCII character set, making this utility useful for development, testing and data inspection.
How to Use It
Enter the source text or Base64 value, select the required operation, and run the converter. Check the output before copying it into your application or test case.
How the Calculation or Check Works
Base64 converts groups of binary data into printable characters. It is an encoding format, not encryption: anyone with the encoded value can decode it when the necessary data is present.
Practical Example
The text “Hello” can be represented as the Base64 value “SGVsbG8=”. Decoding that value returns the original text.
Frequently Asked Questions
Is Base64 encryption? No. Base64 is an encoding scheme and should not be used to protect confidential information.
When is Base64 useful? It is common in data transport, API testing, data URLs, tokens and debugging workflows.
Does Base64 make data smaller? Usually not. Base64 representation adds overhead compared with the original binary data.