How do I convert grams to moles?

Divide the mass in grams by the molar mass of the compound (g/mol) to get moles.

Molarity Calculator

Molarity (M) expresses solution concentration as moles of solute per liter of solution.

Inputs

Results

Try an example

Formula

M = moles of solute / liters of solution

Understanding Molarity, Dilution, and Gas Laws

The chemistry formulas behind solution concentration, dilution calculations, and the ideal gas law, explained simply.

How Molarity and Dilution Calculations Work

The molarity formula and the C1V1=C2V2 dilution equation explained with real lab examples.

Converting Mass to Moles, and pH to pOH

How the mass-to-moles conversion and the pH-pOH relationship both work, with real chemistry examples.

Preparing Solutions for a Chemistry Lab: A Practical Checklist

How molarity, dilution, and pH calculations combine in practice when preparing solutions for a real lab session.

Dilution Calculator (C1V1=C2V2)

Calculate the volume needed to dilute a stock solution to a target concentration.

pH Calculator

Calculate pH from hydrogen ion concentration.

Ideal Gas Law Calculator

Calculate pressure, volume, moles, or temperature using PV = nRT.

Percent Yield Calculator

Calculate the percent yield of a chemical reaction.

Boyle's Law Calculator

Calculate the new pressure or volume of a gas at constant temperature.

Mass-to-Moles Calculator

Convert a mass of a substance to moles using its molar mass.