Text to Base64 Converter
Encode text to Base64 and decode Base64 back to text instantly. Perfect for data encoding, API testing, and web development.
Base64 Encoding
Encode any text to Base64 format for safe data transmission and storage.
Base64 Decoding
Decode Base64 strings back to readable text instantly.
100% Private
Your data never leaves your device. All processing happens locally in your browser.
Mobile Optimized
Works perfectly on smartphones, tablets, and desktops.
What is a Text to Base64 Converter?
A text to Base64 converter is a tool that encodes plain text into Base64 format and decodes Base64 strings back to text. Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using a radix-64 representation. It is commonly used for transmitting data over media that are designed to handle textual data, such as email attachments, JSON APIs, and HTML data URIs.
Why Use Our Base64 Converter?
• Bidirectional: Encode text to Base64 and decode Base64 to text
• Auto-Detect: Automatically detects if input is Base64 or plain text
• Real-Time: Instant conversion with statistics
• Free & Private: No registration, no data storage
How Base64 Works
Base64 encoding works by converting binary data into a set of 64 printable characters:
- Characters: A-Z, a-z, 0-9, +, and /
- Padding: = characters are added at the end to make the output length a multiple of 4
- Encoding: Every 3 bytes of binary data are encoded into 4 ASCII characters
- Decoding: Reverse process converts the Base64 string back to binary data
Quick Tips
- API Testing: Encode JSON data to Base64 for API requests.
- Email Attachments: Base64 is used to encode email attachments.
- Data URIs: Embed images directly in HTML using Base64.
- Auto-Detect: The tool automatically detects if your input is Base64 or plain text.
Who Needs a Base64 Converter?
Web Developers
Encode and decode data for APIs, web storage, and data transmission.
Security Professionals
Analyze and decode Base64-encoded data in security testing.
Data Analysts
Work with Base64-encoded data in analysis and processing.
Students
Learn about Base64 encoding and decoding for computer science studies.
Base64 Examples
| Text | Base64 |
|---|---|
| Hello World! | SGVsbG8gV29ybGQh |
| Base64 | QmFzZTY0 |
| 123456 | MTIzNDU2 |
| Hello, World! | SGVsbG8sIFdvcmxkIQ== |
| Lorem Ipsum | TG9yZW0gSXBzdW0= |
Why Choose Our Base64 Converter?
- Bidirectional: Encode and decode in one tool.
- Auto-Detect: Smart detection of input type.
- Real-Time: Instant conversion with statistics.
- Swap Function: Easily swap input and output.
- Copy Both: Copy input or output with one click.
- Privacy First: No data is sent to our servers. Everything runs in your browser.
Our tools
Writing Tools
AI Writing Tools
Encoding Tools
Counting Tools
Frequently Asked Questions
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format using a radix-64 representation.
What is Base64 used for?
Base64 is used for email attachments, JSON APIs, data URIs in HTML, and transmitting binary data over text-based protocols.
How does auto-detect work?
The tool checks if the input contains only Base64 characters (A-Z, a-z, 0-9, +, /, =) and attempts to decode it. If decoding succeeds, it treats it as Base64; otherwise, it encodes as text.
Is my data private?
Yes, absolutely! Your data never leaves your browser. All processing happens locally on your device.
Is there a limit to how much data I can convert?
No, there are no limits. You can convert data of any size.
Can I use this on mobile?
Yes, our Base64 converter is fully responsive and works on smartphones, tablets, and desktop computers.
Is this tool free?
Yes, our text to Base64 converter is completely free to use with no limits.
How do I swap input and output?
Click the "Swap" button to exchange the input and output text.
What is the padding character in Base64?
The padding character in Base64 is '='. It is used to make the output length a multiple of 4 characters.
Can I decode invalid Base64?
The tool will attempt to decode, but invalid Base64 strings may result in errors. The auto-detect feature will fall back to encoding if decoding fails.