Convert UTF-8 text into a Base64 string for a system or format that expects a text-safe representation of bytes. Follow the exact input and settings below to reproduce this example. Open Base64 Encode Text.
Prepare the source text
Open Base64 Encode Text and choose Write or paste text, or upload a supported UTF-8 text file. The upload opens the editor; it does not run the tool. This example uses the exact source shown in the comparison.
Maximum input and result: 1 MB of UTF-8 text, with a 1,048,576-character input ceiling. Expanding transformations must also fit the result limit.
Use the exact example input
Hello, world!
This text operation runs in your browser; its source and result are not sent for conversion. A draft may be kept in this browser tab when session storage is available. Clear removes the current draft; download important work before closing the tab.
Check how the tool works
This tool has no extra transformation options to set. Keep the source exactly as shown to compare the result.
The output uses standard Base64 characters and padding where required. Line breaks in the source are part of the input and are encoded too; the result is not a picture or a binary file converter. To recover the original text, use Base64 Decode Text on the result.
The example in this guide
Verified in the i2TEXT browser workflow on November 11, 2026.
- Input
- example.txt
- Output
- base64-encode-text.txt
- Saved result
- 20 bytes
Apply and inspect the result
Select Base64 Encode Text when the input and settings are ready. In the saved example, the result begins: "SGVsbG8sIHdvcmxkIQ==".
Base64 is reversible encoding, not encryption. It does not protect secrets and usually makes text longer.
Check the Base64 string in the monospaced result and compare input and result UTF-8 byte sizes in Result overview. Encoding normally increases the size; decode the result with Base64 Decode Text when you need to check a round trip.
Result overview distinguishes changed, unchanged and empty results. An unchanged result means the selected operation did not alter the text; an empty result can be the expected outcome of removal or extraction. Open Show spaces and tabs to reveal spaces as ·, tabs as ⇥ and line endings as ↵. These marks are only a preview; copied and downloaded text keeps its actual whitespace. The whitespace preview shows at most 12,000 Unicode code points. This preview limit does not shorten the editable result or its TXT download.
Save the version you reviewed
Review the current result, then use the download icon to save a TXT file. The actual download in this example is named base64-encode-text.txt. Copy and download use the current result, so make any final wording changes before saving. Continue to can carry the result into a compatible next tool, where you review it before running another operation.
Editing the result hides the calculated details until you run the tool again. Copy and TXT download use the edited text; return to the source and reapply the tool to refresh the report.
example.txtbase64-encode-text.txt
Common questions
Which settings produced this example?
No extra transformation settings were required. The source and actual output are shown in the comparison.
What should I check before using the result?
Base64 is reversible encoding, not encryption. It does not protect secrets and usually makes text longer.
Where is this text processed?
This text operation runs in your browser; its source and result are not sent for conversion. A draft may be kept in this browser tab when session storage is available. Clear removes the current draft; download important work before closing the tab.
Try Base64 Encode Text with your own text.
Use your own source and review the result before sharing.
