PartsPer Converter
Convert parts-per measurements like ppm, ppb, ppt for precision scientific calculations.
About PartsPer Converter
Chemists, environmental scientists and brewers routinely use parts-per measurements—ppm, ppb, ppt—to describe concentration levels. Tooloria’s Parts-Per Converter switches between these units and mass fractions such as mg/L and μg/m³. All constants follow ISO 7812 and EPA Method 602. Decimal precision extends to parts-per-quadrillion for ultra-pure water checks. The tool operates wholly in-browser so lab-notebook entries or industrial QC data stay secured on your device.
Frequently Asked Questions
How do you relate ppm to mg/L?
At 20 °C for dilute aqueous solutions 1 ppm ≈ 1 mg/L. The converter offers a density field for more accurate conversions when dealing with oils or brines.
Can it handle gas concentrations?
Yes—enter temperature and pressure, and the tool converts ppm by volume to μg/m³ using the ideal-gas law.
Is scientific notation supported?
You can input or output values in 1e-style notation (e.g., 3.4e-6). The display honours your chosen decimal-place setting.