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Enter values and calculate.
Calculated result
Formula and method
Mass percent = component mass ÷ total mixture mass × 100. Total mixture mass includes the component.
Worked example
10 g of component in 100 g total mixture equals 10% by mass.
Important boundary
This is mass/mass percentage only—not mass/volume, volume/volume, molarity, molality, or ppm.
Common mistake
Use compatible dimensions and distinguish the quantity being solved from the quantities entered. The calculator normalizes supported units before arithmetic and rejects zero, negative, malformed, or unbounded values.
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