Base64 Encoder & Decoder - Free Online Tool

Encode and decode Base64 strings instantly. Free online tool for developers - no sign-up required.

What is Base64?

Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format. It's commonly used to encode data that needs to be stored or transmitted over media designed for text.

Common Uses for Base64

• Data URLs - Embed images in HTML/CSS
• API payloads - Send binary data in JSON
• Email attachments - Encode attachments in emails
• Configuration - Store binary data in config files
• Web tokens - Encode JWT payloads

Example

Text: Hello World

Base64: SGVsbG8gV29ybGQ=

How to Use Our Tool

1. Visit our Base64 Encoder/Decoder
2. Enter text or paste Base64 string
3. Click Encode or Decode
4. Copy result instantly