How to use the grams to moles calculator
Convert mass of a substance to moles. Enter chemical formula, mass in the fields above; the molar mass, amount, number of particles are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- f — Chemical formula
- m — Mass (g)
Worked example
With chemical formula = NaCl, mass = 58.44 g, the calculator gives molar mass ≈ 58.44 g/mol; amount ≈ 1 mol; number of particles ≈ 6.0221 × 10²³.
Frequently asked questions
What is the formula for the grams to moles calculation?
Molar mass (g/mol) = molmass(f). Amount (mol) = m / [Molar mass]. Number of particles = [Amount] × NAV. Here f is chemical formula, m is mass (g).
What inputs do I need for the grams to moles calculator?
You need chemical formula, mass in g. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.