Molar Mass Calculator
Calculate molar mass, convert between grams and moles, and find the number of molecules for elements and common compounds.
Inputs
Results
Molar Mass
18.02 g/mol
SubstanceWater (H₂O)
Mass100 g
Moles5.55 mol
Molecules3.343e+24
Molar Mass
18.02 g/mol
How to Use This Calculator
- Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
- Mode — Calculation mode to use. Choose from: Element, Compound. default: 1.
- Element — enter your preferred option from the dropdown. Choose from: Hydrogen (H), Helium (He), Carbon (C), Nitrogen (N), Oxygen (O), Sodium (Na), Iron (Fe), Copper (Cu), Gold (Au). default: 2.
- Compound — enter your preferred option from the dropdown. Choose from: Water (H₂O), Salt (NaCl), CO₂, Sulfuric Acid, NaOH, Glucose, CaCO₃, Ethanol, Ammonia (NH₃), HCl. default: 0.
- Quantity — enter a numeric value. Accepts values from 0 to 100,000 (default: 100).
- Unit — Measurement system to use. Choose from: Grams, Moles. default: 0.
- Once all inputs are set, review your results in the Results panel. Here's what each output means:
- Molar Mass — shown as a numeric value. This is the primary result of this calculator.
- Substance — your calculated result.
- Mass — shown as a numeric value.
- Moles — shown as a numeric value.
- Molecules — your calculated result.
- Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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