PPM Calculator

Calculate mass-based concentration in parts per million, solute mass or solvent mass.

Calculator

This mass-based tool uses ppm = (solute mass / total solution mass) × 1,000,000. Use the same mass unit for both masses.

Calculate
Concentration1,000 ppm
Solute mass1
Solvent mass999
Solution mass1,000

Formula and assumptions

ppm = (solute mass / solution mass) × 10⁶

This calculator treats ppm as a mass fraction scaled by one million. Both mass entries must use the same unit.

Assumption: Both mass inputs use the same unit.

Variables and units

  • ppm — mass fraction multiplied by one million
  • solute mass — mass of dissolved substance
  • solution mass — total solution mass

Worked example

1 g of solute in 999 g of solvent gives a 1,000 ppm solution by mass.

Important limits

Usage of ppm differs by field; this page uses a mass-based definition only.

Reference and related tools

IUPAC: parts per million. Return to Chemistry Calculators for the other tools in this group.