g/kg to PPM Calculator
Formulations often list additives in g/kg. Multiply by 1,000 and you have PPM — 2.5 g/kg becomes 2,500 PPM.
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g/kg to PPM Calculator
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Formulations often list additives in g/kg. Multiply by 1,000 and you have PPM — 2.5 g/kg becomes 2,500 PPM.
How to use this calculator
- Enter g/kg.
- Multiply by 1,000.
- Read PPM.
The formula
1 g/kg = 1,000 mg/kg = 1,000 PPM (mass).
What the units mean
g/kg — grams per kilogram, used on formulation and batch sheets. Multiply by 1,000 to get PPM.
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
Feed additive at 4 g/kg → 4,000 PPM in the finished feed.
Quick reference
| g/kg | PPM |
|---|---|
| 0.5 | 500 |
| 1 | 1,000 |
| 2.5 | 2,500 |
| 10 | 10,000 |
g/kg × 1,000 = PPM.
Where you will actually use this
Formulation sheets and PPM specs finally speak the same language.
- Feed formulations
- Fertilizer blending
- Industrial batching
Mistakes that give wrong answers
- Using 10,000 (that is percent territory)
Key takeaways
- Formula: PPM = g/kg × 1,000
- Remember: g/kg × 1,000 = PPM.
- Watch out for: Using 10,000 (that is percent territory)
- 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 g/kg to PPM?
Multiply by 1,000.
What is 1 g/kg in PPM?
1,000 PPM.