Mole Calculator – Convert Grams, Moles, and Particles Easily
The Mole Calculator helps you accurately convert between grams and moles based on the molar mass (molecular weight) of a substance. Ideal for chemistry students, researchers, and lab professionals, this tool simplifies stoichiometry and chemical measurements.
How to Use the Mole Calculator
Input the following:
- Mass of the substance (in grams)
- Molar mass (g/mol) of the compound or element
The calculator will output:
- Number of moles (or grams, if converting the other way)
Mole Calculation Formulas
- Moles = Mass (g) ÷ Molar Mass (g/mol)
- Mass = Moles × Molar Mass
Example
Mass = 18g of water (H₂O)
Molar Mass of H₂O = 18 g/mol
→ Moles = 18 ÷ 18 = 1 mole
Another Example:
Moles = 0.5 mol of NaCl
Molar Mass of NaCl = 58.44 g/mol
→ Mass = 0.5 × 58.44 = 29.22 g
Common Use Cases
- Chemistry lab calculations
- Preparing chemical solutions
- Solving stoichiometry equations
- Understanding chemical reactions
- Educational and exam preparation
Why Use a Mole Calculator?
Mole conversions are critical in chemistry for balancing equations, preparing reactions, and determining reactant/product amounts. This tool saves time and prevents calculation errors in chemical processes.
Frequently Asked Questions (FAQs)
What is a mole in chemistry?
A mole represents 6.022 × 10²³ particles (Avogadro's number) of a substance.
What is molar mass?
Molar mass is the weight (in grams) of 1 mole of a substance. It's calculated based on atomic/molecular composition.
Do I need the molar mass to use this calculator?
Yes, accurate mole or gram conversions require the correct molar mass of the compound.
Can I use this for elements and compounds?
Yes, just enter the correct molar mass for the specific element or chemical compound.
What units does this calculator support?
It uses grams (g), moles (mol), and grams/mole (g/mol) as standard chemistry units.