Convert parts per billions to fractions
1 ppb = 0.000000001 1 — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
1e-91
Exact decimal: 0.000000001
As a fraction: 1/1000000000
1 ppb = 0.000000001 1
How to convert parts per billions to fractions
Multiply the number of parts per billions by 0.000000001 to get fractions.
The exact factor is 0.000000001 — as a fraction, 1/1000000000.
Parts per billion to Fraction conversion table
| Parts per billions (ppb) | Fractions (1) |
|---|---|
| 1 ppb | 1e-9 |
| 2 ppb | 2e-9 |
| 3 ppb | 3e-9 |
| 5 ppb | 5e-9 |
| 10 ppb | 1e-8 |
| 20 ppb | 2e-8 |
| 25 ppb | 2.5e-8 |
| 50 ppb | 5e-8 |
| 100 ppb | 0.000 000 1 |
| 250 ppb | 0.000 000 25 |
| 500 ppb | 0.000 000 5 |
| 1000 ppb | 0.000 001 |
Fraction to Parts per billion conversion table
| Fractions (1) | Parts per billions (ppb) |
|---|---|
| 1 1 | 1 000 000 000 |
| 2 1 | 2 000 000 000 |
| 3 1 | 3 000 000 000 |
| 5 1 | 5 000 000 000 |
| 10 1 | 10 000 000 000 |
| 20 1 | 20 000 000 000 |
| 25 1 | 25 000 000 000 |
| 50 1 | 50 000 000 000 |
| 100 1 | 100 000 000 000 |
| 250 1 | 250 000 000 000 |
| 500 1 | 500 000 000 000 |
| 1000 1 | 1 000 000 000 000 |
Frequently asked
How many fractions are in a parts per billion?
One parts per billion equals 1e-9 fractions (ppb → 1). That figure is exact, not rounded.
How do you convert parts per billions to fractions?
Multiply the number of parts per billions by 0.000000001 to get fractions.
What is 1 1 in parts per billions?
One fraction is 1000000000 parts per billions.
What is 10 ppb in 1?
10 ppb = 1e-8 1.