How do I encode text to Base64 online for free?

Type or paste any text in the input field above and the Base64-encoded output appears instantly in real time. You can copy it with one click. The encoding runs entirely in your browser — no server, no login.

What is Base64 encoding used for?

Base64 encoding converts binary data or arbitrary text into a safe ASCII string. Common uses include: encoding binary file contents to embed in JSON or XML, encoding credentials in HTTP Basic Authentication headers (Authorization: Basic ...), data URIs for inline images in CSS/HTML, and encoding binary attachments in email (MIME).

Does the Base64 encoder handle Unicode, emoji, and non-ASCII characters?

Yes. The input is first UTF-8 encoded, then Base64 encoded. This means accented letters, CJK characters, Arabic, and emoji are all handled correctly and the output decodes back to the exact original string.

What is the difference between standard Base64 and URL-safe Base64?

Standard Base64 uses + and / as characters 62 and 63, which are special characters in URLs and must be percent-encoded. URL-safe Base64 (RFC 4648 §5) uses - and _ instead, making the output safe to include directly in URLs and file names without escaping.

Is the Base64 encoder free and private?

Yes — free, no account, runs entirely in your browser. Do not paste passwords or secrets into online tools as a general rule, but this tool does not transmit your input anywhere.

text → base64

Base64 Encode

Encode any text to Base64 format instantly in your browser. No upload, fully private.

Your files are processed locally and never uploaded to our servers.

Input

Output

How it works

1
Type or paste input
Paste your value into the input field. No file needed — works directly in your browser.
2
Get instant results
The result appears in real time as you type. No server, no upload.
3
Copy the output
Click the copy button to copy the result to your clipboard instantly.

Frequently Asked Questions

Related tools

Base64 Decode

base64 → text

URL Encode

URL encode

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