Base64 Encoder/Decoder
Free online tool to encode text to Base64 or decode Base64 to text
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What is Base64 Encoding/Decoding?
Base64 is an encoding method that converts binary data to ASCII strings. It is widely used to safely transmit binary data through text-based protocols in email attachments, data URIs, and API communications. This tool can encode UTF-8 text to Base64 or decode Base64 strings back to the original text.
How to Use
- Enter the text to encode or decode in the input area.
- Click the encode button to convert the text to Base64.
- Click the decode button to convert Base64 back to the original text.
- Use the copy result button to copy the converted result to clipboard.
Frequently Asked Questions
No. Base64 is an encoding method, not encryption. Since anyone can easily decode it, it is not suitable for protecting sensitive data. It is a conversion method for safely transmitting data in text format.
Base64 encoding increases data size by approximately 33% compared to the original. This is because 3 bytes of binary data are converted to 4 ASCII characters. For example, 300 bytes of data becomes approximately 400 bytes of Base64 string.
Yes, it is possible. This tool supports UTF-8 encoding, so all Unicode characters including Korean, Japanese, Chinese, and emojis can be encoded to Base64 and decoded back.
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