Convert Parts per Billion to Parts per Million
1 part per billion = 0.001 parts per million. Multiply the number of parts per billion by 0.001.
Parts per Billion to Parts per Million table
| Parts per Billion | Parts per Million |
|---|---|
| 1 ppb | 0.001 ppm |
| 2 ppb | 0.002 ppm |
| 3 ppb | 0.003 ppm |
| 4 ppb | 0.004 ppm |
| 5 ppb | 0.005 ppm |
| 10 ppb | 0.01 ppm |
| 20 ppb | 0.02 ppm |
| 25 ppb | 0.025 ppm |
| 50 ppb | 0.05 ppm |
| 100 ppb | 0.1 ppm |
| 500 ppb | 0.5 ppm |
| 1000 ppb | 1 ppm |
About these units
The part per billion (ppb) is a specialist or regional unit of percentage & parts, equal to 1e-9 fractions.
The part per million (ppm) is a specialist or regional unit of percentage & parts, equal to 0.000001 fractions.
Going the other way, 1 part per million = 1,000 parts per billion. Water quality reports use parts per million, finance uses basis points, and everyone else uses percent. They are all just fractions with different scaling.
Frequently asked
- How many parts per million are in a part per billion?
- 1 part per billion = 0.001 parts per million.
- How do you convert parts per billion to parts per million?
- Multiply the number of parts per billion by 0.001.
- What is 10 ppb in ppm?
- 10 ppb = 0.01 ppm.