Base64 Decoder Online
Decode Base64 strings back into readable plain text and UTF-8 characters.
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Invalid Base64 string. Unable to decode.
Base64 String (Input)29 chars
Plain Text Decoded (Output)
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About Base64 Decoder
Decode any valid Base64 string back into human-readable plain text. Supports standard Base64 with padding, unpadded strings, and URL-safe Base64.
Key Features & Capabilities
Automatic detection of standard vs URL-safe Base64
Proper UTF-8 decoding with support for non-English alphabets and emojis
Error feedback for malformed Base64 characters
How to Use Base64 Decoder
1
Paste your Base64 encoded string into the input area.
2
Click 'Decode Base64'.
3
Read or copy the decoded plain text.
Real-World Examples
Decode Base64 String
Input
SGVsbG8sIFdvcmxkIQ==
Output
Hello, World!
Frequently Asked Questions (FAQ)
The equal sign '=' is used as padding characters to ensure the total string length is a multiple of 4 bytes.