Unit Converters

Always use the same units (inches or mm) in each calculation (unless indicated). Enter your numbers into the light blue-colored cells. To recalculate, press the TAB key, or click in another blue box, or click the Update button. Other formulas you’d like to see?

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Tx/dB Converter %Tx dB dB %Tx  
 
The decibel (dB) is a logarithmic unit widely used in the telecom industry.  
   
Temperature Converter Celsius Fahrenheit Kelvin Untitled-1 Fahrenheit Celsius Kelvin  
 
 
Convert Feet Feet Inches mm Meters  
 
 
Convert mm mm Inches Feet Microns  
 
 
Convert meters Meters Feet Inches mm  
 
           
NA/Angle/F# Converter NA Angle/2 Angle F#   Angle NA    
       
By convention, lenses are specified by F# and fibers are specified by NA. F# NA    
             

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