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Molarity Calculator (M = mol / L)
Computes molarity M = n / V in moles per liter (mol/L) with solution volume and solute mass inputs.
Molarity Concentration Calculator (M = n / V)
Moles of solute dissolved per liter of total solution volume
Volumetric Solution Model
Calculated Molar Concentration
0.5000 M (mol/L)
Millimolar (mM)
500.00 mM
Micromolar (µM)
500000.0 µM
1. Solute Quantity: n = 0.5 mol = 0.5000 moles 2. Solution Volume: V = 1 L = 1.0000 Liters 3. Molarity: M = n / V = (0.5000 mol) / (1.0000 L) = 0.5000 mol/L (Molar) 4. Scale Multipliers: 500.00 mM (millimolar) • 500000.0 µM (micromolar)
What is Molarity?
Molarity is the number of moles of solute dissolved per liter of solution, the standard concentration unit in chemistry.
Formula & Step-by-Step Calculation
M = n / V = m / (MolarMass × V)
Moles of solute divided by liters of solution.
Worked Step-by-Step Examples
Example 1
0.5 moles of NaCl dissolved in 1.0 Liter of water
Solution: 0.500 M (mol/L)
• 0.5 mol / 1.0 L = 0.500 M
Common Real-World & Academic Use Cases
- ✓ Buffer preparation in biochemistry
- ✓ Acid/base reagent standardized titrations
- ✓ Cell culture media formulation
How to Use the Molarity Calculator (M = mol / L)
1
Input Moles of Solute
Enter moles (or grams with molar mass).
2
Input Solution Volume
Enter volume in Liters.
3
Read Molarity
Inspect concentration in M (mol/L).
Frequently Asked Questions
Q: Does molarity change with temperature?
Yes, liquid volumes expand with increasing temperature, slightly lowering molarity.