PPM, mg/L, and Percent Concentration Converter
Convert ppm, mg/L, and percent for dilute aqueous solutions using an explicit density and percent basis.
Enter Concentration value, Solution density (kg/L), Percent basis for % result or input, Input unit to calculate Equivalent concentration (ppm), Concentration (mg/L), Concentration (%) on selected basis, Conversion basis.
Professional example: Converting a dilute aqueous reading between ppm and mg/L. The example inputs remain editable and must be replaced with current site or product data before operational use.
Result
Conversion basis
Formula
Calculation logicFormula definitions and substituted values.
Equivalent concentration (ppm)
if Input unit = percent then if Percent basis for % result or input = w_w then Concentration value * 10000 else Concentration value * 10000 / Solution density (kg/L) else if Input unit = mg_l then Concentration value / Solution density (kg/L) else Concentration value
if Input unit = percent then if Percent basis for % result or input = w_w then Concentration value * 10000 else Concentration value * 10000 / Solution density (kg/L) else if Input unit = mg_l then Concentration value / Solution density (kg/L) else Concentration valueConcentration (mg/L)
Equivalent concentration (ppm) * Solution density (kg/L)
Equivalent concentration (ppm) * Solution density (kg/L)Concentration (%) on selected basis
if Percent basis for % result or input = w_w then Equivalent concentration (ppm) / 10000 else Concentration (mg/L) / 10000
if Percent basis for % result or input = w_w then Equivalent concentration (ppm) / 10000 else Concentration (mg/L) / 10000Conversion basis
Density set to 1.000 kg/L: ppm and mg/L are numerically equal under the dilute-water approximation. if Solution density (kg/L) = 1; Density-adjusted conversion: ppm and mg/L are not numerically equal. otherwise
Density set to 1.000 kg/L: ppm and mg/L are numerically equal under the dilute-water approximation. if Solution density (kg/L) = 1; Density-adjusted conversion: ppm and mg/L are not numerically equal. otherwiseWhat to check
- Example values are editable planning inputs. Confirm current product labels, facility measurements, supplier records, and local procedures before use.
- Confirm the input units and relationships match the current label, supplier record, payroll record, or facility measurement before relying on the result.
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