Skip to content

Molarity Calculator

Chemistry
0.0(0)

Calculates the molarity of a solution given the number of moles of solute and the volume of the solution in liters. Also calculates mass from molarity, volume and molecular weight.

More tools:Science & Lab Calculators
How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Moles of Solute, Volume of Solution, Molarity, Molecular Weight, and Volume of Solution (for mass calculation) in the units shown.

Step 2

Read Mass of Solute Required and Molarity in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

NaCl Solution

Moles of Solute: 0.5 mol; Volume of Solution: 1 L; Molarity: 0.5 mol/L; Molecular Weight: 58.44 g/mol; Volume of Solution (for mass calculation): 0.5 L

Mass of Solute Required: 14.61 g; Molarity: 0.5 mol/L

NaOH Solution

Moles of Solute: 0.25 mol; Volume of Solution: 0.5 L; Molarity: 0.5 mol/L; Molecular Weight: 40 g/mol; Volume of Solution (for mass calculation): 0.25 L

Mass of Solute Required: 5 g; Molarity: 0.5 mol/L

Glucose Solution

Moles of Solute: 1 mol; Volume of Solution: 2 L; Molarity: 0.5 mol/L; Molecular Weight: 180.16 g/mol; Volume of Solution (for mass calculation): 1 L

Mass of Solute Required: 90.08 g; Molarity: 0.5 mol/L

Explore the topic

Explore More Science & Lab Calculators

Find calculators for chemistry, biology, lab dilution, concentration, osmolarity, genetics, physics, and experimental planning.

Explore tools
People Also Calculate

Related Calculators

Continue with another tool on a related topic.

Chemistry

STP Calculator

Calculates the volume or number of moles of a gas at Standard Temperature and Pressure (STP). STP is defined as 0°C (273.15 K) and 1 atm pressure. This calculator uses the ideal gas law to perform these calculations.

1,463 viewsOpen calculator
Chemistry

Melting Point Calculator

Calculates the melting point of a substance based on the provided pressure. This calculator uses a simplified model and is most accurate for substances with well-defined melting points. Note: This calculator provides estimations and should not be used for critical applications.

1,445 viewsOpen calculator
Chemistry

Osmotic Pressure Calculator

Calculates the osmotic pressure of a solution using the van't Hoff equation. Osmotic pressure is the minimum pressure which needs to be applied to a solution to prevent the inward flow of water across a semipermeable membrane.

1,400 viewsOpen calculator
Chemistry

Van't Hoff Factor Calculator

Calculates the Van't Hoff factor (i), which represents the number of particles a solute dissociates into in a solution. This factor is important in colligative properties calculations.

1,365 viewsOpen calculator