Base64 Encoder

Encode and decode Base64 online for free. Convert text and files instantly.

✓ Free✓ No sign-up✓ Works in browser

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URL-safe Base64

Plain Text → Encode

49 characters

Base64 Output

SGVsbG8sIFdvcmxkISBUaGlzIGlzIEZyZWVUb29sS2l0IEJhc2U2NCBlbmNvZGVyLg==

68 characters

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How to Use This Tool

Choose Encode or Decode Mode

Toggle between Encode (text → Base64) and Decode (Base64 → text) using the mode buttons at the top.

Paste Your Input

Paste your plain text to encode, or paste a Base64 string to decode, into the left input panel.

Copy the Output

Click the Copy button next to the output panel to copy the result to your clipboard.

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Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. It is used to transmit binary data over text-based protocols like email or JSON APIs, and to embed images directly in HTML and CSS.

What is Base64 used for?

Common uses include: encoding binary data in JSON, embedding images in CSS as data URLs, encoding credentials in HTTP Basic Authentication headers, and storing binary data in XML or HTML.

Is Base64 the same as encryption?

No. Base64 is encoding, not encryption. It simply converts data to a different representation. Anyone can decode it instantly. Do not use Base64 to secure sensitive data — use actual encryption instead.

Why does Base64 use = padding at the end?

Base64 encodes every 3 bytes of input into 4 characters. When the input length is not a multiple of 3, padding characters (=) are added to make the output length a multiple of 4.

About Base64 Encoder

Our Base64 Encoder is a free, fast, and privacy-friendly tool that works entirely in your browser. No files are ever uploaded to our servers — all processing happens locally.

Unlike competitors that impose daily limits or require account creation, FreeToolKit gives you unlimited access with zero sign-up. Whether you are a developer, student, designer, or business professional, this tool is built to save you time.