Convert parts per millions to per milles
1 ppm = 0.001 ‰ — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.001‰
As a fraction: 1/1000
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1 ppm = 0.001 ‰
Show this value in all 8 parts & percentages units
- Fractions 1 0.000 001
- Percents % 0.0001
- Per milles ‰ 0.001
- Per myriads ‱ 0.01
- Parts per millions ppm 1
- Parts per billions ppb 1000
- Parts per trillions ppt 1 000 000
- Parts per quadrillions ppq 1 000 000 000
Every row is Parts per million (ppm) converted through the fraction, in exact rational arithmetic.
How to convert parts per millions to per milles
Multiply the number of parts per millions by 0.001 to get per milles.
The exact factor is 0.001 — as a fraction, 1/1000.
Parts per million to Per mille conversion table
| Parts per millions (ppm) | Per milles (‰) |
|---|---|
| 1 ppm | 0.001 |
| 2 ppm | 0.002 |
| 3 ppm | 0.003 |
| 5 ppm | 0.005 |
| 10 ppm | 0.01 |
| 20 ppm | 0.02 |
| 25 ppm | 0.025 |
| 50 ppm | 0.05 |
| 100 ppm | 0.1 |
| 250 ppm | 0.25 |
| 500 ppm | 0.5 |
| 1000 ppm | 1 |
Per mille to Parts per million conversion table
| Per milles (‰) | Parts per millions (ppm) |
|---|---|
| 1 ‰ | 1000 |
| 2 ‰ | 2000 |
| 3 ‰ | 3000 |
| 5 ‰ | 5000 |
| 10 ‰ | 10 000 |
| 20 ‰ | 20 000 |
| 25 ‰ | 25 000 |
| 50 ‰ | 50 000 |
| 100 ‰ | 100 000 |
| 250 ‰ | 250 000 |
| 500 ‰ | 500 000 |
| 1000 ‰ | 1 000 000 |
Frequently asked
How many per milles are in a parts per million?
One parts per million equals 0.001 per milles (ppm → ‰). That figure is exact, not rounded.
How do you convert parts per millions to per milles?
Multiply the number of parts per millions by 0.001 to get per milles.
What is 1 ‰ in parts per millions?
One per mille is 1000 parts per millions.
What is 10 ppm in ‰?
10 ppm = 0.01 ‰.