Chemistry Concentration Tool
Free Molarity Calculator
Calculate your solution’s concentration by entering the amount of solute and the final solution volume. This calculator estimates molarity in mol/L, millimolar concentration, moles of solute, and grams needed when molar mass is provided.
Enter your solution details
Use this tool to calculate molarity from moles and volume, or enter mass and molar mass to estimate moles first. Choose the correct units for volume and mass to get a clean concentration result.
Formula used:
Molarity = Moles of solute ÷ Liters of solution
Moles from mass = Mass in grams ÷ Molar mass
Millimolar = Molarity × 1,000
Micromolar = Molarity × 1,000,000
Grams needed for target = Target molarity × Volume in liters × Molar mass
Molarity = Moles of solute ÷ Liters of solution
Moles from mass = Mass in grams ÷ Molar mass
Millimolar = Molarity × 1,000
Micromolar = Molarity × 1,000,000
Grams needed for target = Target molarity × Volume in liters × Molar mass
Molarity
0.0000 M
Moles of Solute
0.0000 mol
Millimolar
0.00 mM
Micromolar
0.00 µM
Volume in Liters
0.0000 L
Solute amount converted to moles
0.0000 mol
Solution volume converted to liters
0.0000 L
Molarity in mol/L
0.0000 M
Concentration in millimolar
0.00 mM
Concentration in micromolar
0.00 µM
Mass represented by solute amount
N/A
Mass needed for target molarity
N/A
This calculator is for educational and laboratory planning estimates only. Always verify molar mass, purity, hydration state, final volume, significant figures, and lab safety requirements before preparing any chemical solution.
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