Base64 Decoder
Decode Base64 encoded strings back to plain text. Supports standard and URL-safe Base64.
Base64 Input
Decoded Output
Hello, World!
Input Length
20
Output Length
13
About Base64: Base64 is an encoding scheme that converts binary data to ASCII text. It's commonly used for embedding data in URLs, emails, and web pages.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.