Free Base64 Encoder & Decoder Online
Safely encode any plain text string into Base64 format or decode a Base64 string back into readable text.
Input (Text)
Output (Base64)
How to Use
Select your mode: "Encode Text to Base64" or "Decode Base64 to Text".
Type or paste your text or Base64 string into the left input box.
Click the "Convert" button to instantly process your data.
If the input is invalid (e.g., malformed Base64), an error will appear.
Click the Copy button to copy the result to your clipboard.
Features
FAQ
Whether you are a backend developer constructing secure API headers, a frontend engineer embedding small images in CSS, or a cybersecurity professional analyzing obfuscated text, our free online Base64 Encoder and Decoder is the perfect tool for you in 2026. Safely encode plain text or Unicode strings into Base64 format, or instantly decode Base64 payloads back into human-readable text. Because this utility runs 100% within your local web browser, your sensitive data, API keys, and private tokens are completely safe and never transmitted to our servers.
Related Tools
Subnet Calculator
Free IP Subnet Calculator to instantly calculate network subnets, CIDR, broadcast addresses, and IP ranges online.
Client-sideIPv4 to IPv6 Converter
Instantly convert IPv4 addresses to IPv6 mapped and transition formats online for free.
Client-sideStrong Password Generator
Generate secure, random, and uncrackable passwords online with our free Strong Password Generator.
Client-sideCHMOD Calculator
Free visual CHMOD calculator to instantly generate Linux and Unix file permissions.
Client-side