Calculate
Enter values and calculate.
Calculated result
Formula and method
Use n = m ÷ M and its rearrangements. Mass is normalized to grams; molar mass is entered directly.
Worked example
10 g divided by 5 g/mol equals 2 mol.
Important boundary
This does not parse chemical formulas. Use the separate Molecular Weight Calculator when a formula must be converted to molar mass.
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.
Related chemistry tools
Molecular Weight Calculator · Theoretical Yield Calculator · Molarity Calculator