Base64 Decode
Decode Base64 encoded text instantly. Free, no signup required.
Base64 Input
Decoded Output
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How to Decode Base64
- Paste your Base64 encoded string in the input area above.
- Click "Decode" to convert it back to plain text.
- Copy the decoded output.
About Base64 Decoding
Base64 decoding converts Base64-encoded ASCII text back to its original binary or text form. This is useful for reading encoded email content, decoding API responses, extracting data from data URLs, and debugging encoded strings.
Common Use Cases
- Decoding email attachments and MIME-encoded content
- Reading Base64-encoded API tokens and credentials
- Extracting data from HTML data URIs
- Debugging encoded strings in logs and configuration files
Frequently Asked Questions
The tool will show an error message if the input contains invalid Base64 characters. Valid Base64 uses A-Z, a-z, 0-9, +, /, and = for padding.
This tool decodes Base64 to text. For binary files (images, PDFs), the decoded output may not display correctly as text. Use a specialized tool for binary file decoding.
No, Base64 is a reversible encoding, not encryption. It provides no security — anyone can decode Base64 data without a key.
Your data is processed on our server and immediately discarded. We never store your content and all transfers use SSL encryption.
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