Base64 Decode
Decode standard Base64 text as UTF-8 in your browser
Last updated: October 14, 2026
How to use
- Paste your base64 encoded text in the input field
- You can paste from clipboard, upload a file, or type directly
- The decoded output appears automatically in real-time
- Use "Copy" to copy the decoded result or "Download" to save as a file
- Supports UTF-8 decoding for international characters
- Handles newlines in base64 input (common in email attachments)
Example
Base64 input:
SGVsbG8sIFdvcmxkIQ==Decodes to: Hello, World!
Result actions
Copy or download the tool output, or share a link to Base64 Decode.
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Decode standard Base64 into readable text
Paste a standard Base64 string or upload a text file containing one, then choose Decode Base64. The tool accepts the standard alphabet A-Z, a-z, 0-9, +, /, and opti It removes line breaks before decoding, which helps with Base64 text wrapped across lines; embedded spaces and URL-safe - or _ characters are not accepted.
Decoded bytes are interpreted as UTF-8 text, then displayed for copying or saved as base64-decoded.txt. For example, SGVsbG8= decodes to “Hello”. This tool does not reconstruct binary files such as PDFs or images; their bytes may appear as unreadable text. Use a file-aware decoder when you need the original binary file.
Decoding happens in your browser. The input and result are not uploaded.