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Parts Per Million Calculator

🧪 Solutions & Molarity. Use the Parts per million formula to find concentration, solute, solution: pick the value you want, type the others, and the answer updates as you go.

ppm=msolutemsolution×106\text{ppm} = \dfrac{m_{solute}}{m_{solution}}\times 10^6
Concentration5 ppm

Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.

What each letter means

QuantityUnit
Concentrationppm
Soluteg
Solutiong

Worked example

Find the concentration when Solute = 0.005 g, Solution = 1000 g.

Using ppm = msolutemsolution× 10⁶: Concentration = 5 ppm.

Frequently asked questions

What is the formula for Parts per million?

ppm = msolutemsolution× 10⁶.

What do the letters stand for, and what units are used?

Concentration in ppm, Solute in g, Solution in g.

How do you calculate concentration?

Put the values into ppm = msolutemsolution× 10⁶. For example, with Solute = 0.005 g, Solution = 1000 g, concentration = 5 ppm.

Can I solve for a different value?

Yes. In the calculator above, pick the circle next to any value (concentration, solute, solution) and fill in the others: it rearranges the formula for you.

All chemistry formulas in the Chemistry Formulas