Use this Weight Concentration Converter for fast conversion between Weight Fraction, Weight %, ppm (wt), ppb (wt), mg/kg, µg/kg, µg/g, and mg/g. All units expressed on a weight basis (w/w).
Weight Concentration Converter Interface
Conversion Factors
- 1 weight fraction = 100 weight %
- 1 weight % = 10 000 ppm (wt)
- 1 ppm (wt) = 1 000 ppb (wt)
- 1 ppm (wt) = 1 mg/kg
- 1 ppm (wt) = 1 000 µg/kg
- 1 ppm (wt) = 1 µg/g
- 1 ppm (wt) = 0.001 mg/g
Before You Go
Use this converter to quickly cross-check reported concentrations when methods, specifications, or standards use different wt-based units. This helps avoid reporting errors, especially when comparing lab results, certificates of analysis, or regulatory limits.
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