Base64 Encoder & Decoder
Encode any text to Base64 or decode a Base64 string back to plain text in one click. Base64 is a way of representing binary or text data using only 64 safe ASCII characters, which is why it shows up everywhere: data URIs, JWTs, email attachments, API tokens and config files. This tool is UTF-8 safe, so emoji and non-Latin characters round-trip correctly instead of turning into garbage. Paste your input, choose encode or decode, and copy the result. Everything is processed locally in your browser, so your tokens and payloads are never sent to a server.
How to use Base64 Encode / Decode
- Paste your text into the input box to encode it.
- Read the Base64 result in the output box.
- To go the other way, paste Base64 and switch to decode mode.
- Click copy to grab the result.
Frequently asked questions
What character set does Base64 use?
Standard Base64 uses the 64 characters A to Z, a to z, 0 to 9, plus and slash, with the equals sign as padding. Every 3 bytes of input map to 4 output characters.
Is Base64 encoding the same as encryption?
No. Base64 is a reversible encoding, not encryption. Anyone can decode it back to the original text, so never use it to hide secrets.
How does this tool handle non-ASCII text like emoji or accents?
It is UTF-8 safe, so it first encodes the text as UTF-8 bytes before Base64 encoding. That means emoji, accents and other Unicode characters round-trip correctly.
What is Base64 Encode / Decode?
Encode any text to Base64 or decode a Base64 string back to plain text in one click. Base64 is a way of representing binary or text data using only 64 safe ASCII characters, which is why it shows up everywhere: data URIs, JWTs, email attachments, API tokens and config files.
Is Base64 Encode / Decode free to use?
Yes. Base64 Encode / Decode is completely free, with no sign-up and no usage limits.
Does Base64 Encode / Decode work in a web browser?
Yes. Base64 Encode / Decode runs in any modern web browser. There is nothing to download or install.
Is my data private with Base64 Encode / Decode?
Yes. Base64 Encode / Decode runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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Link this tool from a README, doc or site. The badge links back to this page.
[](https://yourhack.ai/base64)