CSS Unit Converter

Convert px to rem and em using a root font size.

Local only
Input
Output

                        
                        
                    

                

            


            
Your data is processed in the browser and is not sent to the server.

            
            

                

                    
Why developers use it

                    
    
                                                    
  • CSS Unit Converter gives a focused workspace for one development task without extra navigation.
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  • It is grouped with Calculators tools, so related utilities are one click away.
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  • The calculation runs in your browser, which keeps the entered data on your device.
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How it works

                    
    
                                                    
  1. Enter the value for CSS Unit Converter or load the sample.
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  2. The browser updates the result automatically as the input changes.
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  3. Review the result and copy it when it is ready.
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Calculators

                    
Convert px to rem and em using a root font size.

                

            


            

                
FAQ

                                    

                        What is CSS Unit Converter used for?
                        
CSS Unit Converter helps developers process this input directly in the browser for quick checks and repeat daily work.

                    

                                    

                        Is my data uploaded to the server?
                        
No. This tool processes the entered data in your browser and does not send it to the server.

                    

                                    

                        Can I bookmark a tool directly?
                        
Yes. Every tool has its own localized URL.