Developer Tools
Base64 Converter
Encode or decode strings to base64.
Enter the values and review the result.
Calculation assumptions
- *Base64 is encoding, not encryption.
- *Encode turns supported text into Base64; decode reverses valid Base64 text.
- *The browser btoa/atob methods are used, so non-ASCII text or binary data may need a dedicated workflow.
- *Do not use Base64 as protection for secrets, passwords, or private data.
Enter a value to convert.
Converted output will appear here.
What Base64 conversion does
Base64 represents data as text using a limited set of ASCII characters. It is commonly used in APIs, data URLs, email payloads, and developer tools.
Example: "Hello World" encodes to "SGVsbG8gV29ybGQ=".
Base64 does not hide or secure the original content. Anyone can decode it.
Common mistakes
- Treating Base64 as encryption or password protection.
- Trying to decode malformed Base64 text.
- Expecting browser text encoding to handle every Unicode or binary case.
- Adding extra spaces or line breaks that are not expected by the receiving system.
Transparency note
Accuracy and limitations
Calzivo tools are built for practical estimates, conversions, and checks. Some tools use standard formulas or simplified assumptions, and results can be affected by input accuracy, rounding, units, local rules, or changing official requirements.
Results depend on the values you enter and any simplified assumptions used by the tool. Verify important results before making decisions or submitting official information.
How to Use This Tool
Use these steps to enter the right inputs and interpret the result correctly.
Enter the text you want to process.
Select whether you want to encode to Base64 or decode from it.
The result will be displayed instantly.
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Related Guides
Background reading and explanations related to Base64 Converter.
Frequently Asked Questions
Common questions about Base64 Converter and how to read the result.
Is Base64 encryption?
No, Base64 is an encoding scheme, not encryption. It can be easily reversed and does not provide security.
What does encode mean?
Encode converts supported input text into a Base64 string.
What does decode mean?
Decode converts a valid Base64 string back into readable text when the decoded data is text.
Can Base64 store images?
Yes, but use Image to Base64 or Base64 to Image for image data URLs.
Why did decoding fail?
The input may not be valid Base64, may be missing padding, or may represent binary data instead of readable text.
Should I use Base64 for secrets?
No. Base64 is reversible and should not be used to protect passwords, tokens, or private data.