Parts Per Converter
Easily convert between different parts-per notations including percentage, ppm, ppb, ppt, and ppq. Simply enter your value, select units, and get instant results.
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Parts Per Notation Reference
Percent (%)
1% = 1 part per hundred
1% = 10,000 ppm
Parts per Million (ppm)
1 ppm = 1 part per million
1 ppm = 1,000 ppb
Parts per Billion (ppb)
1 ppb = 1 part per billion
1 ppb = 0.001 ppm
Parts per Trillion (ppt)
1 ppt = 1 part per trillion
1 ppt = 0.000001 ppm
Parts per Quadrillion (ppq)
1 ppq = 1 part per quadrillion
1 ppq = 0.000000001 ppm
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