Enter the mole percent (%), the number of moles of all substances, and the molar weight (g/mol) into the Mole Percent to Weight Calculator. The calculator will evaluate the Mole Percent to Weight. 

Mole Percent to Weight Calculator

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Enter any 3 values to calculate the missing variable

Mole Percent to Weight Formula

The following formula is used to calculate the Mole Percent to Weight. 

W = MP/100 * n * MW

Variables:

  • W is the Mole Percent to Weight (g)
  • MP is the mole percent (%) 
  • n is the number of moles of all substances 
  • MW is the molar weight (g/mol) 

To calculate the weight from mole percent, divide the mole percent by 100, multiply by the number of moles, then multiply again by the molar weight.

Mole % to Weight (g) Conversion Table (Water, MW = 18.015 g/mol; Total moles = 1.00 mol)
Mole Percent (%) Weight (g)
10.180
20.360
50.901
101.802
152.702
203.603
254.504
305.405
33⅓6.005
407.206
509.008
6010.809
66⅔12.010
7012.611
7513.511
8014.412
8515.313
9016.214
9517.114
10018.015
Weight (g) = Mole%/100 × Total moles (mol) × Molar weight (g/mol). Shown for water: MW = 18.015 g/mol, total moles = 1.00 mol.

How to Calculate Mole Percent to Weight?

The following steps outline how to calculate the Mole Percent to Weight.

  1. First, determine the mole percent (%).
  2. Next, determine the number of moles of all substances. 
  3. Next, determine the molar weight (g/mol). 
  4. Next, gather the formula from above = W = MP/100 * #n * MW.
  5. Finally, calculate the Mole Percent to Weight.
  6. After inserting the variables and calculating the result, check your answer with the calculator above. 

Example Problem:

Use the following variables as an example problem to test your knowledge.

mole percent (%) = 25

number of moles of all substances = 500

molar weight (g/mol) = 30

W = MP/100 * #n * MW =  ?