Per Mille to PPM Calculator
A European spec says 2.5‰ and your lab works in PPM. Multiply by 1,000 → 2,500 PPM. Done.
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Per Mille to PPM Calculator
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A European spec says 2.5‰ and your lab works in PPM. Multiply by 1,000 → 2,500 PPM. Done.
How to use this calculator
- Enter the per mille value.
- Multiply by 1,000.
- Read the PPM result.
The formula
Exact reverse of PPM → per mille.
What the units mean
Per mille (‰) — parts per thousand. Common in European specifications and oceanography; seawater salinity is about 35‰.
PPM (parts per million) — one part of solute per million parts of the total mixture. The workhorse unit for trace concentrations in water, air, and food.
Worked example
A beverage regulation allows 0.5‰ of an additive → PPM: 0.5 × 1,000 = 500 PPM.
Quick reference
| Per mille | PPM |
|---|---|
| 0.1‰ | 100 |
| 0.5‰ | 500 |
| 1‰ | 1,000 |
| 5‰ | 5,000 |
‰ × 1,000 = PPM.
Where you will actually use this
Bridges ‰-based specifications with PPM-based lab and instrument workflows.
- EU spec interpretation
- Salinity conversions
- Beverage compliance
Mistakes that give wrong answers
- Multiplying by 10,000 (that is percent to PPM)
- Misreading ‰ as %
Key takeaways
- Formula: PPM = Per mille (‰) × 1,000
- Remember: ‰ × 1,000 = PPM.
- Watch out for: Multiplying by 10,000 (that is percent 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 PPM?
Multiply ‰ by 1,000.
What is 1‰ in PPM?
1,000 PPM.