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Binary ⇄ Base64 Converter

Quickly convert values between binary and Base64

Binary to Base64

Result

Result based on the provided information

Base64 to Binary

Result

Result based on the provided information

Related Features

Base64 ↔ Text
Base64 ↔ File
Base64 ↔ Binary
Binary ↔ Decimal
Binary ↔ Text
Binary ↔ Hexadecimal
Binary ↔ Octal
Binary ↔ ASCII
Binary ↔ Base64
Binary ↔ Gray Code
Binary ↔ BCD (Binary-Coded Decimal)

Binary to Base64 and Base64 to Binary Converter – Online, Fast, and Free

Do you need to convert binary data to Base64 or transform Base64 into binary quickly and easily?

Fastools offers a free online Binary to Base64 and Base64 to Binary converter, perfect for developers, students, analysts, and IT professionals who need to encode or decode binary data securely and efficiently. All directly in your browser—no installation or sign-up required.

Simply enter your binary sequence or Base64 content, choose the desired conversion type, and click “Convert.” In seconds, you’ll get an accurate result, following the widely used Base64 standard in web applications, APIs, and data transmission systems.

Our Binary to Base64 converter is ideal for learning how Base64 encoding works, understanding how binary data is transported in text formats, and exploring fundamental concepts in networking, information security, and web development.

How to use the Binary to Base64 and Base64 to Binary converter?

  • 1️⃣ Choose your mode: Binary → Base64 or Base64 → Binary.
  • 2️⃣ Type or paste your content into the designated field.
  • 3️⃣ Click “Convert” to get your result instantly.
  • 4️⃣ Copy, share, or use the result as needed.

Why use Fastools’ Base64 converter?

  • ✅ 100% free, fast, and accessible online
  • ✅ Accurate conversion following the Base64 standard
  • ✅ Ideal for APIs, uploads, authentication, and data transmission
  • ✅ Simple, intuitive, and easy-to-use interface
  • ✅ Compatible with desktops, tablets, and smartphones

Benefits of using our Base64 conversion tool

  • 📊 Understand how binary data is represented in Base64
  • ⚡ Instantly convert binary data and Base64 strings
  • 🎯 Ideal for web development, information security, and system integration
  • 💻 Use directly in your browser—no apps to install

Can I use the converter to learn Base64, binary, or programming?

Yes! This tool is excellent for anyone who wants to understand how files, images, and binary data are converted to Base64, study data encoding, work with REST APIs, authentication, tokens, and information handling in software projects.

Start converting Binary to Base64 and Base64 to Binary quickly, accurately, and completely free with Fastools. Simplify your studies, projects, and development workflows!

What is Binary to Base64 conversion?

Binary-to-Base64 conversion transforms sequences of bits (0s and 1s) into a standardized textual representation called Base64. This format is widely used to safely transmit binary data through systems that only accept text.

Base64 is common in web applications, APIs, emails, authentication systems, and file storage because it prevents compatibility issues during binary data transmission.

What is converting Binary to Base64 used for?

Converting binary to Base64 is essential whenever binary data needs to be sent, stored, or displayed in environments that work exclusively with text, such as HTML, JSON, XML, and HTTP headers.

  • Secure transmission of files and images in APIs
  • Sending email attachments (MIME)
  • Storing binary data in text-based databases
  • Encoding authentication tokens and keys

How does Binary to Base64 conversion work?

The process begins by grouping binary bits into 6-bit blocks. Each block represents a decimal value between 0 and 63, which is mapped to a specific character in the Base64 table.

If the number of bits isn’t a multiple of 6, the system adds padding using the "=" character to complete the last group.

Practical example

Binary: 01001000 01101001
Original text: Hi
Base64: SGk=

Important notes

  • Base64 is not encryption—it’s only encoding.
  • Data size increases by approximately 33% after conversion.
  • The use of '=' indicates padding.

What is Base64 to Binary conversion?

Base64 to binary conversion is the reverse process, where a sequence of Base64 characters is decoded back into bits (0s and 1s), restoring the original binary data.

What is converting Base64 to Binary used for?

This conversion is used to recover files, images, text, and other binary data that were transmitted or stored in Base64 format.

  • Reconstructing files sent via API
  • Displaying Base64-encoded images
  • Processing data in web applications
  • Decoding messages and tokens

How does Base64 to Binary conversion work?

Each Base64 character is converted to its corresponding decimal value, which is then turned into a 6-bit block. These blocks are regrouped to form 8-bit bytes.

Practical example

Base64: SGk=
Binary: 01001000 01101001
Recovered text: Hi

After removing the padding (=), the system reconstructs the binary data exactly as it was before encoding.

Possible conversion errors

  • Invalid characters outside the Base64 character set.
  • Incorrect padding can cause decoding failures.
  • Corrupted data results in invalid binary.

Did you know?

  • Inline HTML images use Base64.
  • JWTs use Base64 to carry information.
  • Base64 was created to avoid issues with special characters.