Base64 Tools

Base 64

Base 64 encodes text to Base64 and switches direction with one toggle. It runs in your browser with nothing uploaded to any server.

Client-sideRuns entirely in your browser — your data never leaves your device.

Base 64 is a free Base64 Tools utility that runs entirely in your browser — nothing you enter is uploaded.

Input
Output



  
How to use Base 64

  
    
      
  1. Type or paste your text into Base 64's input area.
    2. 
      
  2. Adjust the Mode option to match what you need.
    3. 
      
  3. Watch the output update instantly while you adjust the text.
    4. 
      
  4. Use Copy to keep or reuse the result.
    5. 
  

  
About this tool

  
Base 64 is a static, client-side tool with no backend. Base 64 encodes or decodes Base64 on your device with no round-trip to a server.

  
Because it runs locally, even sensitive payloads never leave the page. Your input never leaves the page, and no account or install is required.

  
Frequently asked questions

  

      
How do I use Base 64?
Use Base 64 to process your input without installing anything using the Mode control; everything happens client-side.

      
Do I need an account for Base 64?
No — Base 64 needs no account, sign-up or installation.

      
Where is my data processed by Base 64?
Entirely in your browser — Base 64 keeps your data on your own machine and sends nothing anywhere.

      
Is Base64 in Base 64 URL-safe?
Base 64 uses standard Base64 by default and runs locally, so your data is never sent anywhere.

      
Does Base 64 work offline?
Once the page has loaded, Base 64 keeps working with no network connection.

  

  
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