Per Mille to PPB Calculator
From ‰ straight to PPB: multiply by a million. 0.02‰ becomes 20,000 PPB.
Calculator
Per Mille to PPB Calculator
YOUR FEEDBACK
Was this calculator helpful?
Your feedback helps us improve the calculator and its explanations. This is CalculatorsPPM user feedback, not a Google review.
—/50 user ratings
From ‰ straight to PPB: multiply by a million. 0.02‰ becomes 20,000 PPB.
How to use this calculator
- Enter ‰.
- Multiply by 1,000,000.
- Read PPB.
The formula
PPB = Per mille (‰) × 1,000,000
‰ → PPM (×1,000) → PPB (×1,000) = ×1,000,000.
What the units mean
Per mille (‰) — parts per thousand. Common in European specifications and oceanography; seawater salinity is about 35‰.
PPB (parts per billion) — one part per billion parts. The standard unit for trace contaminants in drinking water and environmental samples.
Worked example
0.005‰ impurity → 5,000 PPB.
Quick reference
| Per mille | PPB |
|---|---|
| 0.001‰ | 1,000 |
| 0.01‰ | 10,000 |
| 0.1‰ | 100,000 |
‰ × 1,000,000 = PPB.
Where you will actually use this
Connects ‰-based specs with trace-level PPB analysis.
- Spec conversions
- Trace analysis bridging
Mistakes that give wrong answers
- Using 1,000 (that is ‰ to PPM)
Key takeaways
- Formula: PPB = Per mille (‰) × 1,000,000
- Remember: ‰ × 1,000,000 = PPB.
- Watch out for: Using 1,000 (that is ‰ to PPM)
- Next step: run your own numbers in the calculator above, then verify with a measurement — calculated values are only as good as the inputs.
Frequently asked questions
How do you convert per mille to PPB?
Multiply ‰ by 1,000,000.