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Text to Base64 Converter | Free Online Tool

Convert plain text and UTF-8 strings to Base64 instantly. 100% free, client-side processing with no ads, no tracking, and no cookies.

✓ 100% Ad-Free ✓ Privacy-First ✓ No Signup ✓ Zero Cookies

Examples

Basic text encoding

Input:

Hello, World!

Output:

SGVsbG8sIFdvcmxkIQ==

JSON payload encoding for APIs

Input:

{"user":"john","role":"admin"}

Output:

eyJ1c2VyIjoiam9obiIsInJvbGUiOiJhZG1pbiJ9

When to Use This

  • Encoding API credentials and tokens
  • Preparing text data for URL-safe transmission
  • Converting structured text (JSON, XML) for web transfers
  • Embedding text in data URIs

Related Tools

Base64 Encoder

Encode text and files to Base64

Base64 Decoder

Decode Base64 to original content

Base64 to Text

Decode Base64 to readable text

Image to Base64

Convert images to data URIs

How It Works

Base64 is a binary-to-text encoding scheme that converts binary data into ASCII characters. The Base64 alphabet uses 64 characters: A-Z, a-z, 0-9, +, and / (with = for padding). This encoding is essential for transmitting binary data over text-based protocols like HTTP, JSON, and XML.

When you encode data, binary bytes are converted to a sequence of Base64 characters, increasing the size by approximately 33%.

Frequently Asked Questions

Does this tool support Unicode and UTF-8?
Yes. The encoder properly handles Unicode text including emojis, accented characters, and non-Latin scripts. Text is encoded as UTF-8 before Base64 conversion.
What is the maximum text length?
There is no hard limit imposed by the tool. However, extremely large text inputs may slow down your browser due to client-side processing. For practical purposes, we recommend staying under 1MB of text.
Why use Base64 for text?
Base64 ensures text data can be safely transmitted over protocols that only support ASCII characters. It is commonly used for API payloads, email attachments, and data embedded in URLs.
Is this different from URL encoding?
Yes. URL encoding (percent-encoding) replaces unsafe URL characters with %xx sequences. Base64 converts all data to ASCII letters, digits, +, and /. They serve different purposes and are often used together.
Why is this tool free?
As a professional IT solutions company, our business relies on enterprise services, not ad revenue. Because this tool processes everything locally on your device, it costs us virtually nothing to host.

Your Privacy is Protected

All Base64 encoding and decoding happens entirely in your browser. Your text and files never leave your device, are never sent to any server, and are never stored. We use zero cookies, zero tracking, and zero ads.