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Base64 Encoding Tool for Developers

Encode and decode text to and from Base64

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Features

  • Encode & decode
  • UTF-8 safe
  • Byte size
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This tool runs on your device — your files and inputs never go anywhere.

How to Use Base64 Encoder

Encode and decode text to and from Base64 No signup, and nothing gets uploaded for most use.

  1. 1

    Enter your numbers in the input fields.

  2. 2

    Choose the calculation options or frequency.

  3. 3

    The result updates instantly as you type.

  4. 4

    Review the breakdown, chart, or schedule, and copy the answer.

Why you might like it

  • Nothing to upload — the work happens on your device.
  • Free with no signup, no watermarks, and no daily limits.
  • Works in any modern browser on any device — nothing to install.
  • Usually done in a few seconds, so it doesn't get in your way.
Try Base64

Frequently Asked Questions

What is Base64?▾

Base64 is an encoding that turns arbitrary binary data into safe ASCII text using 64 characters. It is commonly used in data URLs, email attachments and JSON payloads.

Is Base64 encryption?▾

No. Base64 is an encoding, not encryption. Anyone can decode it with no secret key, so it should never be used to hide data.

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