How to Encode Text to Base64
Quick Answer
Base64 encoding converts text or binary data into ASCII characters safe for transmission over text-based systems. Use a Base64 encoder to instantly convert your text.
Common Use Cases
- API authentication - Many APIs require Base64-encoded credentials
- Data URLs - Embedding small images directly in HTML or CSS
- Email attachments - Binary files need Base64 encoding in email
- JWT tokens - JSON Web Tokens use Base64 encoding
Step-by-Step Guide
- Enter your text - Type or paste the text you want to encode in the Base64 Encoder
- Click Encode - The tool converts your text to Base64 format instantly
- Copy the result - Use the encoded string in your application or API call
Example
Input:
Hello World!Output:
SGVsbG8gV29ybGQhFrequently Asked Questions
Why would I need to encode text to Base64?
Base64 is used when you need to transmit binary or special
characters through systems that only handle text. Common uses include email attachments,
data URLs, and API authentication.
Does Base64 encoding increase the size?
Yes. Base64 encoding increases data size by approximately 33%. Every
3 bytes of input becomes 4 bytes of output.
Can I encode non-English text to Base64?
Yes. Base64 can encode any binary data, including UTF-8 text with
non-English characters. The encoder handles all characters correctly.
Is Base64 encoding reversible?
Yes. Base64 is a two-way encoding. You can always decode Base64 back
to the original text using a Base64 decoder.