Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 to text
Input Text
Output Base64
Free Base64 Encoder & Decoder Tool
Encode and decode Base64 strings instantly with our free online Base64 converter. Perfect for developers working with APIs, data transmission, and text encoding. Safe, fast, and completely browser-based with no server uploads required.
Features:
- • Encode text to Base64 format
- • Decode Base64 back to text
- • One-click mode switching
- • Copy to clipboard function
- • Download results as file
Use Cases:
- • API data encoding
- • Email attachment encoding
- • URL-safe data transmission
- • Configuration file encoding
- • Web development tasks
How to Use Base64 Encoder/Decoder
Choose Mode: Select “Encode” to convert text to Base64, or “Decode” to convert Base64 back to text.
Enter Text: Paste your text or Base64 string into the input field on the left.
Process: Click the encode/decode button to convert your data instantly.
Get Results: Copy or download the converted result from the output area.
What is Base64 Encoding?
Base64 is a binary-to-text encoding scheme that represents binary data as a string of ASCII characters. It’s commonly used for encoding data that needs to be stored or transmitted over media designed for text.
Common Applications:
- • Email attachments (MIME)
- • Data URLs in web pages
- • API token encoding
- • Basic authentication
- • JSON data embedding
Characteristics:
- • Uses 64 ASCII characters
- • 33% larger than original data
- • URL and filename safe variant
- • Padding with '=' characters
- • Case-sensitive encoding
Why Use Our Base64 Tool?
🔒 Privacy First
All encoding and decoding happens in your browser. Your data never leaves your device.
⚡ Lightning Fast
Instant conversion with no server round trips. Process data as quickly as you can type.
🔄 Easy Switching
One-click toggle between encode and decode modes with automatic input switching.
💯 Always Free
No registration, no limits, no hidden costs. Encode and decode unlimited data for free.