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Concentration Calculator

Chemistry
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This calculator helps you convert between different concentration units, including molarity (mol/L) and percentage concentration (% w/v, % v/v, % w/w).

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Mass of Solute, Molar Mass of Solute, Volume of Solution, Density of Solution, and Concentration Type in the units shown.

Step 2

Read Solute Volume (mL), Solution Weight (g), % w/v (weight/volume), Molarity (mol/L), % v/v (volume/volume), % w/w (weight/weight), and Selected Percentage Concentration 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 (1M)

Mass of Solute: 5.844 grams; Molar Mass of Solute: 58.44 g/mol; Volume of Solution: 100 milliliters; Density of Solution: 1 g/mL; Concentration Type: % w/v (weight/volume)

Solute Volume (mL): 5.844 mL; Solution Weight (g): 100 grams; % w/v (weight/volume): 5.844 %; Molarity (mol/L): 1 mol/L; % v/v (volume/volume): 5.844 %; % w/w (weight/weight): 5.844 %; Selected Percentage Concentration: 5.844 %

Sucrose Solution (10% w/v)

Mass of Solute: 10 grams; Molar Mass of Solute: 342.3 g/mol; Volume of Solution: 100 milliliters; Density of Solution: 1 g/mL; Concentration Type: % w/v (weight/volume)

Solute Volume (mL): 10 mL; Solution Weight (g): 100 grams; % w/v (weight/volume): 10 %; Molarity (mol/L): 0.2921413964 mol/L; % v/v (volume/volume): 10 %; % w/w (weight/weight): 10 %; Selected Percentage Concentration: 10 %

Ethanol Solution (70% v/v)

Mass of Solute: 70 grams; Molar Mass of Solute: 46.07 g/mol; Volume of Solution: 100 milliliters; Density of Solution: 0.789 g/mL; Concentration Type: % v/v (volume/volume)

Solute Volume (mL): 88.71989861 mL; Solution Weight (g): 78.9 grams; % w/v (weight/volume): 70 %; Molarity (mol/L): 15.19426959 mol/L; % v/v (volume/volume): 88.71989861 %; % w/w (weight/weight): 88.71989861 %; Selected Percentage Concentration: 88.71989861 %

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