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Convert UTF8 to UTF7

Convert UTF8 data to UTF7 data. Runs entirely in your browser, so your data never leaves your device.

0 chars · 0 lines

Output

The result appears here as you type.

How to use Convert UTF8 to UTF7

  1. 1. Paste the UTF-8 text. Type or paste the text you want made mail-safe, such as Hi followed by a smiley emoji, into the input pane.
  2. 2. Read the shifted output. There are no settings here; plain ASCII characters pass through unchanged while any non-ASCII run gets wrapped in a plus-sign shift sequence and encoded as modified base64.
  3. 3. Copy the UTF-7 result. The output pane shows the RFC 2152 encoded string, safe to pass through systems that only trust plain 7-bit ASCII bytes.

When to use Convert UTF8 to UTF7

Convert UTF8 to UTF7 produces the mail-safe encoding defined in RFC 2152, which lets Unicode text survive systems that only trust 7-bit ASCII. Non-ASCII runs get shifted into a modified base64 block while ordinary letters and punctuation pass straight through unchanged.

  • Generating a header value for a legacy mail system. You are testing a mail server or client that still needs to produce UTF-7 encoded subject lines for compatibility with older infrastructure, and want a correctly formatted sample.
  • Reproducing an IMAP folder name encoding. You are implementing IMAP's UTF-7 variant for mailbox names and need reference output for a folder name that mixes ASCII and non-ASCII characters.
  • Testing a security scanner's UTF-7 detection. You are validating that a web application firewall correctly flags UTF-7 encoded payloads, a known older Internet Explorer XSS bypass technique, and need real encoded samples to test against.

Examples

Convert

Input

Hi ☺

Output

Hi +Jjo-

About the Convert UTF8 to UTF7 tool

Convert UTF8 to UTF7 is a free online tool that works entirely inside your web browser. Convert UTF8 data to UTF7 data. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.

This page is one of 69 UTF-8 utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.

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.

Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.

Frequently asked questions

Is Convert UTF8 to UTF7 free to use?

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?

Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.

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?

No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.

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.