part per million (ppm) → unit fraction (0–1) (1)
1 ppm = 0.000001 1 · ⇄ unit fraction (0–1) (1) → part per million (ppm)
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All units in this category
| Converted Value | ||
|---|---|---|
| unit fraction (0–1) | 1 | — |
| percent | % | — |
| permille (parts per thousand) | ‰ | — |
| part per million | ppm | — |
| part per billion | ppb | — |
| part per trillion | ppt | — |
Conversion Formula & Definition
1 = ppm × 0.000001
1 part per million (ppm) = 0.000001 unit fraction (0–1) (1).
Popular Conversions (Concentration & Parts-Per)
Quick Conversion Reference Table: part per million (ppm) → unit fraction (0–1) (1)
| part per million (ppm) | unit fraction (0–1) (1) |
|---|---|
| 0.1 ppm | 1×10⁻⁷ 1 |
| 0.5 ppm | 5×10⁻⁷ 1 |
| 1 ppm | 0.000001 1 |
| 2 ppm | 0.000002 1 |
| 5 ppm | 0.000005 1 |
| 10 ppm | 0.00001 1 |
| 20 ppm | 0.00002 1 |
| 50 ppm | 0.00005 1 |
| 100 ppm | 0.0001 1 |
| 250 ppm | 0.00025 1 |
| 500 ppm | 0.0005 1 |
| 1,000 ppm | 0.001 1 |