Base64 Encoder / Decoder
Encode plain text into Base64 strings or decode Base64 data back to plain text for web APIs and data transmission.
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How to Use Base64 Encoder / Decoder
Base64 Encoder / Decoder Formula / How It Works
The tool converts binary inputs to 6-bit index characters using browser-native window.btoa and window.atob translation APIs.
For example, let's look at encoding the plain text string "HelloTools" to Base64 format. By entering these values into the tool, you will get the encoded Base64 string "SGVsbG9Ub29scw==" generated locally instantly.
Frequently Asked Questions
A binary-to-text encoding scheme that represents binary data in an ASCII string format using 64 safe characters.
To transmit binary data (like images or keys) over media designed to deal with textual data without distortion.
No, Base64 is merely encoding and offers no security or cryptographic protection.
A-Z, a-z, 0-9, "+", "/", and "=" for padding.
The "=" sign appended to the end of a Base64 string to ensure the final block has a length divisible by 4.
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