Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to plain text. Supports URL-safe Base64 and binary data encoding.
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Calculator insights
What this calculator does
Base64 Encode / Decode helps you quickly estimate encode text to base64 or decode base64 back to plain text. supports url-safe base64 and binary data encoding. with clean output and clear next steps.
How the calculation works
Enter Mode, Input Text and this calculator uses standard formulas to determine Output and Output Length. The output is displayed immediately in a user-friendly format.
Example calculation
For example, enter realistic values into the Base64 Encode / Decode to see how the calculator produces Output and Output Length that you can use for planning and comparison.
Disclaimer
The calculations provided by this website are for informational purposes only and should not be considered financial, legal, tax, or professional advice.
Frequently Asked Questions
What is Base64 used for?
Base64 encodes binary data as ASCII text for safe transmission in emails, URLs, and JSON. Images in CSS are often Base64 encoded.