Convert UTF8 to Base64
Quickly convert UTF8 text to base64 encoding scheme. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Convert UTF8 to Base64
- 1. Paste the UTF-8 text. Type or paste the text you want encoded, such as a name with an accented letter or a longer message, into the input pane.
- 2. Let the tool encode the bytes. There are no settings here; the text is converted to its UTF-8 byte sequence and that sequence is base64-encoded, so accented and multi-byte characters survive the round trip.
- 3. Copy the base64 output. The output pane shows the base64 string. Paste it into a JSON field, a URL, an email header or anywhere plain text needs to travel safely through ASCII-only channels.
When to use Convert UTF8 to Base64
Convert UTF8 to Base64 packs arbitrary text, including accented letters, emoji and non-Latin scripts, into the printable ASCII alphabet that base64 guarantees. This runs entirely in your browser, which matters if the text you are encoding is sensitive and you would rather not paste it into a server-side tool.
- Embedding a display name in a JWT payload. You are hand-building a JSON web token for testing and need to base64-encode a claims object containing a user's name written in their own script.
- Preparing a value for a Kubernetes secret. A Kubernetes Secret manifest requires its data fields to be base64-encoded strings. Encoding a config value with special characters here gives you the exact string to paste into the YAML.
- Attaching text safely to a URL query parameter. A URL needs to carry a short message that includes characters URLs normally mangle. Base64-encoding it here keeps the parameter intact through redirects and logging systems.
Examples
Encode
Input
héllo
Output
aMOpbGxv
About the Convert UTF8 to Base64 tool
Convert UTF8 to Base64 runs as plain JavaScript in your browser tab, with no server behind it. Quickly convert UTF8 text to base64 encoding scheme. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's UTF-8 Tools section, 69 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
There is nothing to configure. Provide the input and the result appears on its own. A worked example further down the page shows exactly what the tool produces for a real input.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Does Convert UTF8 to Base64 cost anything?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.