Base64 Encode
Encode any text or data to Base64 instantly and privately.
How to use Base64 Encode
- Type or paste the text you want to encode into the input box.
- Click "Encode to Base64". The Base64 string appears instantly below.
- Copy the result and use it in your data URI, header, or payload.
- To convert Base64 back to text, switch to the Base64 Decoder.
What is Base64 Encode?
Base64 is an encoding scheme that represents binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, + and /). It lets you safely transmit or store data — like images or files — in text-only contexts such as JSON, XML, URLs, or email.
Base64 is encoding, not encryption: it provides no security and is trivially reversible. Its purpose is compatibility, not secrecy. Encoded output is about 33% larger than the original because every 3 bytes become 4 characters.
About the Base64 Encode
The Base64 Encoder converts plain text (including emoji and other Unicode) into a Base64 string in one click. Base64 is everywhere in web development — embedding images in CSS or HTML as data URIs, encoding credentials for HTTP Basic Auth, packing binary data into JSON or XML, and storing data in URLs.
This encoder handles UTF-8 correctly, so accented characters and emoji round-trip without corruption — a common pitfall with naive Base64 tools. Paste your text, click encode, and copy the result.
It runs entirely in your browser, so nothing you encode is uploaded or stored, and there are no size limits beyond your device's memory. Need the reverse? Use our Base64 Decoder.