Parts-per Unit Conversion
Enter the Parts-per value in the unit field, and the list below will immediately show the conversion results.
Units | |||
|---|---|---|---|
| Parts per quadrillion (ppq) | 999.9999999999999 | 999.9999999999999 | SI |
| Parts per billion (ppb) | 0.001 | 0.001 | SI |
| Parts per million (ppm) | 0.000001 | 0.000001 | SI |
Parts per trillion (ppt) MultipleChart
Logarithmic Scale
Parts-per Units Conversion Chart
| Parts per million (ppm) | Parts per billion (ppb) | Parts per trillion (ppt) | Parts per quadrillion (ppq) | |
|---|---|---|---|---|
| Parts per million (ppm) | 1 | 1000 | 1000000 | 999999999.9999999 |
| Parts per billion (ppb) | 0.001 | 1 | 1000.0000000000001 | 1000000 |
| Parts per trillion (ppt) | 0.000001 | 0.001 | 1 | 999.9999999999999 |
| Parts per quadrillion (ppq) | 1e-9 | 0.000001 | 0.001 | 1 |
Parts-per Units Introduction
Parts per million (ppm) represents the quantity of a specific component per million units. Specifically, 1 part per million equals 1 unit of a substance in 1 million units of a solution or mixture. For example, a concentration of a certain pollutant in water is 5 ppm, meaning there are 5 units of the pollutant per million water molecules.
Parts per billion (ppb) represents the quantity of a specific component per billion units. Specifically, 1 part per billion equals 1 unit of a substance in 1 billion units of a solution or mixture. For example, a concentration of a certain gas in the air is 20 ppb, meaning there are 20 units of the gas per billion air molecules.
Parts per trillion (ppt) represents the quantity of a specific component per trillion units. Specifically, 1 part per trillion equals 1 unit of a substance in 1 trillion units of a solution or mixture. For example, a concentration of a certain trace element in seawater is 3 ppt, meaning there are 3 units of the trace element per trillion seawater molecules.
Parts per quadrillion (ppq) represents the quantity of a specific component per quadrillion units. Specifically, 1 part per quadrillion equals 1 unit of a substance in 1 quadrillion units of a solution or mixture. For example, a concentration of a certain chemical in the air is 1 ppq, meaning there is 1 unit of the chemical per quadrillion air molecules.