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Free browser-based developer tool

Base64 Encoder Decoder

Encode text to Base64, decode Base64 back to readable text, convert URL-safe Base64, and process data instantly. Built for developers, API testing, debugging, tokens, payloads, and quick encoding workflows.

Convert Base64 Now How It Works

Base64 Converter

Paste text or Base64 input, choose a mode, and get instant output.

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Active mode: Encode Base64 Waiting for input
Output 0 characters
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Encode Mode

Best Use Cases

Common workflows for developers, API users, and debugging tasks.

Encode API payloads Convert text, JSON snippets, or identifiers into Base64 for development workflows.
Decode Base64 strings Inspect Base64 values from APIs, tokens, config files, logs, and debugging output.
Convert URL-safe Base64 Handle Base64URL strings commonly used in URLs, JWT-like data, and web tokens.

Free Online Base64 Encoder and Decoder

This Base64 Encoder Decoder helps you encode text to Base64, decode Base64 back to readable text, convert URL-safe Base64, copy output, download results, and process data directly in your browser.

It is useful for developers, API testers, backend engineers, frontend developers, students, technical writers, and anyone working with encoded strings, API payloads, configuration data, or web tokens.

What is Base64?

Base64 is an encoding method that converts binary or text data into a readable ASCII string format. It is commonly used in APIs, email systems, data URLs, authentication flows, configuration files, and web development.

What can this Base64 tool do?

  • Encode Base64: Convert normal text into Base64 format.
  • Decode Base64: Convert Base64 strings back into readable text.
  • URL-safe encode: Create Base64URL output for URL-friendly use cases.
  • URL-safe decode: Decode Base64URL strings back into text.
  • Copy and download: Quickly reuse or save converted output.
  • Upload text files: Load local text-based files into the converter.

Base64 encoding vs encryption

Base64 is not encryption. It only changes how data is represented. Anyone can decode Base64 back into the original readable value if the encoded string is valid. Do not treat Base64 as a secure way to hide passwords or private information.

What is URL-safe Base64?

URL-safe Base64, sometimes called Base64URL, replaces URL-sensitive characters with safer alternatives. This makes encoded values easier to place inside URLs, tokens, query strings, and web-safe identifiers.

Privacy and browser-based processing

This Base64 Encoder Decoder runs locally in your browser. Your input is not uploaded to a server, which makes it convenient for quick encoding and decoding of non-sensitive development data.

Frequently Asked Questions

Is this Base64 Encoder Decoder free?

Yes. This Base64 converter is completely free to use online.

Does this tool upload my text?

No. The conversion happens directly in your browser.

Can I decode Base64 to text?

Yes. Choose Decode mode, paste a valid Base64 string, and the readable text output will appear.

Is Base64 encryption?

No. Base64 is encoding, not encryption. It should not be used as a security method.

Can this tool handle emojis and non-English text?

Yes. The converter is designed to support UTF-8 text, including symbols, emojis, and non-English characters.