Convert Parts per Million (ppm) to Parts per Billion (ppb)
Switching between ppm and ppb is a frequent Concentration task. To do it, simply multiply the value by 1000.
Formula
1 ppm = 1000 ppb
To convert ppm to ppb, multiply the value by 1000.
Conversion Table
| Parts per Million (ppm) | Parts per Billion (ppb) |
|---|---|
| 0.01 ppm | 10 ppb |
| 0.1 ppm | 100 ppb |
| 0.5 ppm | 500 ppb |
| 1 ppm | 1000 ppb |
| 2 ppm | 2000 ppb |
| 3 ppm | 3000 ppb |
| 5 ppm | 5000 ppb |
| 10 ppm | 10000 ppb |
| 15 ppm | 15000 ppb |
| 20 ppm | 20000 ppb |
| 25 ppm | 25000 ppb |
| 50 ppm | 50000 ppb |
| 100 ppm | 100000 ppb |
| 250 ppm | 250000 ppb |
| 500 ppm | 500000 ppb |
| 1000 ppm | 1000000 ppb |
| 2500 ppm | 2500000 ppb |
| 5000 ppm | 5000000 ppb |
| 10000 ppm | 10000000 ppb |
| 50000 ppm | 50000000 ppb |
Common ppm to ppb Examples
- 1 ppm = 1000 ppb
- 5 ppm = 5000 ppb
- 10 ppm = 10000 ppb
- 25 ppm = 25000 ppb
- 50 ppm = 50000 ppb
- 100 ppm = 100000 ppb
- 500 ppm = 500000 ppb
- 1000 ppm = 1000000 ppb
About the units
Parts per Million (ppm) — Parts per million expresses trace concentrations: CO₂ in the atmosphere (~420 ppm), water hardness, pollutant limits. 1% equals 10,000 ppm.
Parts per Billion (ppb) — Parts per billion handles the really small traces — contaminant limits in drinking water and trace gases are set in ppb. 1 ppm = 1,000 ppb.
Frequently Asked Questions
Is the conversion from ppm to ppb exact?
The ratio 1000 is defined to high precision and is exact for most practical purposes. Rounding only matters when many decimal places are needed.
How do I convert ppm to ppb by hand?
Take the value in ppm and multiply the value by 1000. The result is the same value expressed in ppb.
What is the formula to convert ppm to ppb?
The formula is 1 ppm = 1000 ppb. To convert any value, multiply the value by 1000.
How much is 1 ppm in ppb?
1 ppm equals 1000 ppb. This ratio applies to every conversion between the two units.
Why are there different units for Concentration?
Different regions and industries developed their own Concentration standards over time. International trade and science later required conversion tools to bridge them.
What is the difference between ppm and ppb?
Both measure Concentration, but they belong to different unit systems or scales, which is why a conversion factor is needed between them.