Decimal, percent, permille, ppm, ppb, ppt converter

           
  Enter decimal:    
  Enter percent: %  
  Enter permille: ‰  
  Enter ppm: ppm  
  Enter ppb: ppb  
  Enter ppt: ppt  
         
           

In science and engineering, the parts-per notation is a set of pseudo units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quantity-per-quantity measures, they are pure numbers with no associated units of measurement. Commonly used are ppm (parts-per-million, 10–6), ppb (parts-per-billion, 10–9), ppt (parts-per-trillion, 10–12) and ppq (parts-per-quadrillion, 10-15).

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Category Loan Tax Interest Investment Profit & Loss Credit and Debt Planning Algebra Calculus Statistics Matrix Number Plane Geometry Solid Geometry Trigonometry Construction Analytic Geometry Math graphing Color Converter Numeral system Unit Energy Temperature Power Frequency Charge Voltage Lighting Classic Physic Electronic Engineering Chemistry Electrical Date Time Commemorative days Observance days Health and medicine Family and Fun Weather Webmaster tools