29.22
g
0.02922
kg
29,220
mg
29.22
g
0.02922
kg
29,220
mg
The Moles to Grams Calculator converts a specified number of moles to mass in grams, kilograms, and milligrams using the substance's molar mass. This is the reverse of the grams-to-moles conversion and is equally essential in chemical laboratory work. When a balanced equation tells you that you need a certain number of moles of a reagent, this calculator tells you exactly how many grams to weigh out on the balance. The formula m = n x M is simple yet indispensable for stoichiometric calculations, solution preparation, titration, and synthesis planning. Output in three mass units (grams, kilograms, milligrams) makes it versatile for both large-scale industrial applications and small-scale laboratory work.
The conversion from moles to grams uses the equation:
m = n x M
Where:
The calculator also provides convenient unit conversions:
Common use cases include:
The mass in grams is the primary result for laboratory weighing. Kilograms are useful when scaling up to production quantities. Milligrams are essential for trace analysis, pharmaceutical formulations, and biochemical experiments. Always match the output unit to your balance's precision and the scale of your experiment.
Inputs
Results
m = 0.5 x 58.44 = 29.22 g. To prepare 500 mL of a 1 M NaCl solution, weigh 29.22 g and dissolve in water to a final volume of 500 mL.
Inputs
Results
m = 2.5 x 180.16 = 450.40 g = 0.4504 kg. This is a substantial amount, about half a kilogram of glucose.
The Mole Calculator converts mass to moles (n = m/M), while this calculator does the reverse: moles to mass (m = n x M). They are inverse operations using the same fundamental relationship.
Simply enter the fractional mole value. For example, 0.025 mol of NaOH (M = 40.00) gives 0.025 x 40.00 = 1.000 g. Lab balances typically measure to 0.001 g or better, so fractional moles are easily handled.
Use stoichiometric ratios from the balanced equation. If 2 mol A reacts with 3 mol B, and you have 1 mol A, you need 1.5 mol B. Enter 1.5 and the molar mass of B to get the mass needed.
Yes. To prepare a solution of known molarity, calculate the moles needed (M x V in liters), then convert to grams using this calculator. Weigh the solid solute and dissolve in the appropriate volume of solvent.
Yes, the moles-to-grams conversion works for any substance. However, for gases you might also want to calculate volume using the ideal gas law (V = nRT/P). At STP, 1 mole of any ideal gas occupies 22.414 L.
For pure elements, IUPAC standard atomic weights provide high precision. For polymers or mixtures with variable molecular weight, use the number-average or weight-average molar mass. The uncertainty in molar mass propagates directly to the mass result.
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