Base64 Converter

Encode text or files to Base64 and decode Base64 back to text or a file.

Interactive workspaceChanges stay on this device
Private by defaultYour inputs and files are processed on this device.
Free and instantNo account, queue, or software installation required.
Ready to useCopy or download results as soon as they are generated.

How to use Base64 Converter

Get a reliable result in three straightforward steps.

  1. 01

    Choose encode or decode

    Select the direction that matches the value you have.

  2. 02

    Enter text or a file

    Paste text, Base64 data, or choose a local file.

  3. 03

    Use the result

    Copy encoded text or download decoded bytes.

Built for everyday work

Useful without the busywork

Focused controls, immediate feedback, and no account between you and the result.

Unicode-safe text

Text is converted through UTF-8 so international characters survive encoding.

File support

Encode file bytes or turn Base64 back into a downloadable file.

Private workflow

Content never needs to be sent to a conversion server.

Practical guide

What is Base64 Converter?

Base64 represents binary bytes using a restricted set of printable characters. It is often used inside data URLs, JSON payloads, email attachments, and systems that cannot safely transport arbitrary binary data.

Base64 is an encoding, not encryption. Anyone with the encoded value can decode it, and the output is usually about one-third larger than the original bytes.

Practical applications

When to use this tool

Common ways Base64 Converter fits into real projects and daily tasks.

1

Data URLs

Embed small assets in CSS, HTML, or structured data.

2

API payloads

Transport binary values through text-only JSON fields.

3

Debugging

Inspect or restore encoded values found in applications.

4

Email systems

Understand attachment and MIME transfer data.

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Helpful answers

Frequently asked questions

Quick answers about base64 converter and how this page works.

Is Base64 encryption?

No. It is a reversible encoding with no password or secret key.

Why is the encoded result larger?

Base64 uses four text characters to represent each three bytes, plus optional padding.

Can Base64 contain line breaks?

Some formats wrap long Base64 values. This decoder ignores whitespace.

Can I encode binary files?

Yes. File bytes are encoded directly in your browser.