Parts Per Converter
Convert between parts per notation including ppm, ppb, ppt, percent, and more.
1 ppm =
1,000
Parts per billion (ppb)
1 ppm in all units
Parts per million (ppm)1
Parts per billion (ppb)1,000
Parts per trillion (ppt)1,000,000
Parts per quadrillion (ppq)1.000000e+9
Percent (%)0.0001
Per mille (permille)0.001
Milligram per kilogram (mg/kg)1
Milligram per liter (mg/L)1
Microgram per gram (ug/g)1
Microgram per liter (ug/L)1,000
Quick Reference
1 ppm
= 1,000 ppb
1 ppb
= 1,000 ppt
1%
= 10,000 ppm
1 ppm
= 0.0001%