Convert parts per billions to per milles
1 ppb = 0.000001 ‰ — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.000 001‰
As a fraction: 1/1000000
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1 ppb = 0.000001 ‰
Show this value in all 8 parts & percentages units
- Fractions 1 1e-9
- Percents % 0.000 000 1
- Per milles ‰ 0.000 001
- Per myriads ‱ 0.000 01
- Parts per millions ppm 0.001
- Parts per billions ppb 1
- Parts per trillions ppt 1000
- Parts per quadrillions ppq 1 000 000
Every row is Parts per billion (ppb) converted through the fraction, in exact rational arithmetic.
How to convert parts per billions to per milles
Multiply the number of parts per billions by 0.000001 to get per milles.
The exact factor is 0.000001 — as a fraction, 1/1000000.
Parts per billion to Per mille conversion table
| Parts per billions (ppb) | Per milles (‰) |
|---|---|
| 1 ppb | 0.000 001 |
| 2 ppb | 0.000 002 |
| 3 ppb | 0.000 003 |
| 5 ppb | 0.000 005 |
| 10 ppb | 0.000 01 |
| 20 ppb | 0.000 02 |
| 25 ppb | 0.000 025 |
| 50 ppb | 0.000 05 |
| 100 ppb | 0.0001 |
| 250 ppb | 0.000 25 |
| 500 ppb | 0.0005 |
| 1000 ppb | 0.001 |
Per mille to Parts per billion conversion table
| Per milles (‰) | Parts per billions (ppb) |
|---|---|
| 1 ‰ | 1 000 000 |
| 2 ‰ | 2 000 000 |
| 3 ‰ | 3 000 000 |
| 5 ‰ | 5 000 000 |
| 10 ‰ | 10 000 000 |
| 20 ‰ | 20 000 000 |
| 25 ‰ | 25 000 000 |
| 50 ‰ | 50 000 000 |
| 100 ‰ | 100 000 000 |
| 250 ‰ | 250 000 000 |
| 500 ‰ | 500 000 000 |
| 1000 ‰ | 1 000 000 000 |
Frequently asked
How many per milles are in a parts per billion?
One parts per billion equals 0.000001 per milles (ppb → ‰). That figure is exact, not rounded.
How do you convert parts per billions to per milles?
Multiply the number of parts per billions by 0.000001 to get per milles.
What is 1 ‰ in parts per billions?
One per mille is 1000000 parts per billions.
What is 10 ppb in ‰?
10 ppb = 0.000 01 ‰.