Convert percent to parts per billion
1 % = 10,000,000 ppb
1 % = 10,000,000 ppb
1 % in every concentration unit
| part per trillion | 10,000,000,000 ppt |
| nanogram per liter | 10,000,000,000 ng/L |
| parts per billion | 10,000,000 ppb |
| microgram per liter | 10,000,000 μg/L |
| parts per million | 10,000 ppm |
| part per million by volume | 10,000 ppmv |
| milligram per kilogram | 10,000 mg/kg |
| milligram per liter | 10,000 mg/L |
| grain per US gallon (as CaCO₃) | 584.18 gpg |
| part per thousand | 10 ppth |
| gram per liter | 10 g/L |
| percent | 1 % |
| percent by weight | 1 % w/w |
| percent by volume | 1 % v/v |
| percent weight per volume | 1 % w/v |
| fraction (0–1) | 0.01 fraction |
How the conversion works
Multiply by 10,000,000 to go from percent to parts per billion, or divide by it to go back. Every conversion on this site routes through the SI value (%) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? parts per billion to percent — 1 ppb = 1.000000000e-07 %.
percent to parts per billion — common values
| 1 % | 10,000,000 ppb |
| 2 % | 20,000,000 ppb |
| 3 % | 30,000,000 ppb |
| 5 % | 50,000,000 ppb |
| 10 % | 100,000,000 ppb |
| 15 % | 150,000,000 ppb |
| 20 % | 200,000,000 ppb |
| 25 % | 250,000,000 ppb |
| 50 % | 500,000,000 ppb |
| 75 % | 750,000,000 ppb |
| 100 % | 1,000,000,000 ppb |
| 250 % | 2,500,000,000 ppb |
| 500 % | 5,000,000,000 ppb |
| 1000 % | 10,000,000,000 ppb |