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Free PPM mg/L Conversion Calculator Online
Smart PPM, mg/L, PPB & μg/L conversion tool: Get instant results with convenient automatic unit detection for water monitoring needs.
Conversion Principles Based on water density of 1g/mL at 4°C
Common Conversions:
- ppm to mg/L:
value × 1 - mg/L to ppm:
value × 1 - ppb to ppm:
value ÷ 1000 - ppm to ppb:
value × 1000 - μg/L to mg/L:
value ÷ 1000 - mg/L to μg/L:
value × 1000
Common Water Quality Parameters/ppm
Water Quality Tip: These values represent typical maximum contaminant levels (MCLs) for drinking water as set by the EPA. Actual regulations may vary by location.
Understanding Concentration Units in Water Quality
In water quality monitoring, concentration units are used to measure the amount of substances dissolved in water.
Parts Per Million (PPM)
PPM represents the number of units of mass of a contaminant per million units of total mass. For water, which has a density of 1 g/mL, this is equivalent to milligrams per kilogram (mg/kg).
Milligrams per Liter (mg/L)
mg/L represents the mass of a substance (in milligrams) contained in one liter of solution. This is the preferred unit for water quality reporting in many scientific contexts.
