Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to readable text in your browser. This tool is useful for developer testing, API payloads, and data formatting, while clearly treating Base64 as encoding rather than encryption.
Browser-localFreeNo upload required
What this tool is for
Use this Base64 tool to encode text for data formatting or decode Base64 back into readable text during development and testing.
How to use
- Paste text into the input box.
- Choose Encode to convert text to
Base64, or Decode to convertBase64back to text. - Review errors for invalid
Base64, then copy the output if needed.
Example
Example: Encode "Hello world" into SGVsbG8gd29ybGQ=, or decode that value back into readable text.
FAQ
Is Base64 encryption?
No. Base64 is encoding, not encryption. Anyone can decode it.
Does it support Unicode text?
Yes. The tool supports text such as Chinese characters and emoji.
Should I paste API keys or tokens?
Do not paste sensitive secrets such as API keys, tokens, or passwords unless you fully understand the risk.
Is my text uploaded?
No. Encoding and decoding run locally in your browser.
What input or result is Base64 Encoder / Decoder designed around?
Base64 Encoder / Decoder focuses on Base64 encoding and decoding. Use it with plain text or a Base64string such as SGVsbG8= to produce decoded text or encoded Base64 output. A practical first step is: Enter plain text or a Base64string such as SGVsbG8=. Example context: Example: use plain text or a Base64string such as SGVsbG8= and check the page for decoded text or encoded Base64 output.
What should I check before using Base64 Encoder / Decoder?
Confirm that the input format matches the example on the page, review the result for your context, and avoid using the output as professional advice when the task has legal, financial, medical, security, or compliance impact.
How is Base64 Encoder / Decoder different from the broader Developer & Data Tools category?
Developer & Data Tools groups many related helpers, while Base64 Encoder / Decoder focuses on one encoding & decoding task so the input, output, limits, and related next steps stay clear.
When to use Base64 Encoder / Decoder
Base64 Encoder / Decoder focuses on Base64 encoding and decoding. Use it with plain text or a Base64string such as SGVsbG8= to produce decoded text or encoded Base64 output.
Base64 Encoder / Decoder is useful when you need a focused encoding & decoding helper inside the broader Developer & Data Tools workflow. Common context includes format structured data, convert between data formats, inspect encoded values.
Typical keywords and task signals for this page include base64, encode, decode, developer. Use it when the result needs to be copied into a document, spreadsheet, code editor, website, campaign, classroom activity, or another browser tab.
Example workflow
- Enter plain text or a
Base64stringsuch as SGVsbG8=. - Review decoded text or encoded
Base64output. - Adjust the input if needed, then copy the final result.
- Compare the output with the example: Example: use plain text or a
Base64stringsuch as SGVsbG8= and check the page for decoded text or encodedBase64output.
Limits and checks
Base64 Encoder / Decoder focuses on Base64 encoding and decoding. Use it with plain text or a Base64string such as SGVsbG8= to produce decoded text or encoded Base64 output. For sensitive or high-stakes work, compare the result with the original input and a qualified reference before sharing it.
For important work, keep the original input available, check edge cases manually, and verify the result against an authoritative source before publishing or sharing it.
Privacy boundary
Base64 input and output are processed locally in your browser and are not uploaded by this tool.
Do not paste passwords, private keys, account secrets, payment data, or confidential business records into any online tool unless you have reviewed the page behavior and your own data policy.
Continue the workflow
Open the category page for a wider view, or use a related tool when the next step is validation, cleanup, conversion, preview, or calculation.