PPM to g/kg Calculator
PPM spec needs to become a batch-sheet number in g/kg? Divide by 1,000 — 3,000 PPM is 3 g/kg.
Calculator
PPM to g/kg Calculator
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PPM spec needs to become a batch-sheet number in g/kg? Divide by 1,000 — 3,000 PPM is 3 g/kg.
How to use this calculator
- Enter PPM.
- Divide by 1,000.
- Read g/kg.
The formula
g/kg = PPM ÷ 1,000
Reverse of g/kg → PPM.
What the units mean
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.
g/kg — grams per kilogram, used on formulation and batch sheets. Multiply by 1,000 to get PPM.
Worked example
Spec 1,500 PPM additive → batch: 1.5 g/kg.
Quick reference
| PPM | g/kg |
|---|---|
| 500 | 0.5 |
| 1,000 | 1 |
| 3,000 | 3 |
| 10,000 | 10 |
PPM ÷ 1,000 = g/kg.
Where you will actually use this
Batch sheets work in g/kg; specs work in PPM.
- Batch sheets
- Mixing instructions
- Production records
Mistakes that give wrong answers
- Dividing by 10,000
Key takeaways
- Formula: g/kg = PPM ÷ 1,000
- Remember: PPM ÷ 1,000 = g/kg.
- Watch out for: Dividing by 10,000
- 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 PPM to g/kg?
Divide by 1,000.