Free 100% In-Browser Tool

Molarity Calculator: Calculate Moles, Liters & Concentration

Calculate chemical solution molarity (M), solute mass in grams, and volume in liters with step-by-step stoichiometry.

Quick Answer:Molarity (M) = Moles of solute / Liters of solution = Mass (g) / [Molar Mass (g/mol) × Volume (L)].
Initializing tool...

Privacy First: 100% Client-Side Processing

Processed in your browser. Files are never uploaded.

How to Use the Molarity Calculator: Chemical Solution Concentration

  1. 1Enter solute mass (g) and molar mass (g/mol).
  2. 2Enter total solution volume (L or ml).
  3. 3View molarity concentration (mol/L).

Formula & How It Works

Standard Solution Molarity Formula

M = n / V = m / (MW × V)

Relates molar concentration to solute moles and volume. Source: IUPAC Gold Book.

Worked Examples

Preparing 1M NaCl Solution

Input: 58.44g NaCl in 1L water

Explanation: 58.44 g / (58.44 g/mol × 1 L) = 1.0 M.

Result: 1.000 M

Frequently Asked Questions

What is the unit of molarity?▼

Molarity is measured in moles per liter (mol/L), symbolized by capital 'M'.

Quick Reference & Conversion Table

CompoundFormulaMolar Mass (g/mol)
Sodium ChlorideNaCl58.44
GlucoseC6H12O6180.16
Sodium HydroxideNaOH40.00
Hydrochloric AcidHCl36.46

⚠️ Common Pitfalls to Avoid

  • •Entering solvent volume instead of final total solution volume.

💡 Practical Real-World Uses

  • •Preparing reagents in biochemical, academic, and clinical testing laboratories.
Last reviewed & updated: 2026-11-07
Free & Open Access
Related Utilities

Explore complementary calculators and converters with instant client-side execution

More in Math

Explore Other Tool Categories

Browse our full collection of 50 free web utilities

View All 8 Categories