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Base64 Encoder/Decoder

Encode and decode Base64 strings.

Enter plain text to start.

Plain Text

What's next?

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Free Online Base64 Encoder & Decoder

Encode text or data to Base64 — or decode Base64 back to plain text — entirely in your browser with no upload to any server and no account required.

Developers encode API credentials for HTTP Basic Auth headers. DevOps engineers encode Kubernetes secrets and environment variables. Front-end developers decode Base64 data URIs to inspect embedded assets.

How to Use

1Paste your text or Base64 string into the input.
2Click Encode to convert to Base64, or Decode to convert back to plain text.
3Copy the result.

Frequently Asked Questions

Is my data sent to a server?

No. Encoding and decoding use the browser's built-in btoa() and atob() functions. Nothing leaves your device.

Can I encode binary data?

Text encoding is fully supported. For binary files (images, PDFs), use the Image to Base64 tool instead.

What is Base64 used for?

Base64 is used to safely transmit binary data in text-based formats like JSON, HTTP headers, and email attachments.

Is Base64 encryption?

No. Base64 is encoding, not encryption. Anyone can decode it without a key. Do not use it to secure sensitive data.

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