PPM Calculator

Calculate parts per million (ppm) from a part-to-whole ratio. ppm = (part / whole) Γ— 1,000,000.

units
units

CONCENTRATION

5 ppm

IN %

0.0005%

IN PPB

5,000

FORMULA

ppm = (part/whole) Γ— 10⁢

πŸ’‘ How to Calculate PPM

What Is PPM?

Parts per million (ppm) is a way of expressing very small concentrations or proportions. It describes the number of units of a substance per one million units of the total. Think of it as "for every million parts, how many are the substance of interest?"

How to Calculate PPM

PPM Formula

ppm = (part / whole) Γ— 1,000,000

For example, if a water sample weighing 1 kg contains 5 mg of chlorine: ppm = (5 mg / 1,000,000 mg) Γ— 1,000,000 = 5 ppm.

Where PPM Is Used

PPM is widely used in water quality testing, air pollution monitoring, food safety, manufacturing tolerances, and chemical analysis. For aqueous solutions, 1 ppm β‰ˆ 1 mg/L. Convert to other units using our universal PPM converter, PPM to percent, or PPM to PPB tools.

πŸ”— Related Calculators

PPM ConverterUniversal PPM converter β€” convert between ppm, percent (%), ppb, and mg/L in one tool with quick reference table.PPM to Percent ConverterConvert parts per million (ppm) to percentage. 10,000 ppm = 1%.mg/L to PPM ConverterConvert milligrams per liter (mg/L) to parts per million (ppm). For water: 1 mg/L β‰ˆ 1 ppm.PPB to PPM ConverterConvert parts per billion (ppb) to parts per million (ppm). 1,000 ppb = 1 ppm.