Percent Solution Calculator

A percent solution expresses how much of a substance (the solute) is dissolved in a total mixture — a standard measurement in chemistry, pharmacy, and lab work. Select your Calculation Type — Weight/Volume (w/v %), Weight/Weight (w/w %), or Volume/Volume (v/v %) — then enter the mass or volume of your solute and the total mass or volume of the solution to get the Percent Concentration. Secondary outputs include Concentration in mg/mL and the Solvent Required to prepare your solution.

Results

Percent Concentration

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Concentration (mg/mL)

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Solvent Required

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Frequently Asked Questions

What is the difference between w/v, w/w, and v/v percent solutions?

w/v (weight/volume) expresses mass of solute per volume of solution, w/w (weight/weight) expresses mass of solute per mass of solution, and v/v (volume/volume) expresses volume of solute per volume of solution. Each is used in different laboratory contexts.

How do I calculate weight/volume percent concentration?

Weight/volume percent is calculated as: (mass of solute / volume of solution) × 100. For example, 5g of salt dissolved in 100mL of solution gives a 5% w/v concentration.

What is a 16 percent solution?

A 16% solution contains 16 parts of solute per 100 parts of total solution. For w/v, this would be 16g of solute in 100mL of solution, or 160mg in 1mL of solution.

How could you increase the concentration of a solution?

You can increase concentration by adding more solute, removing solvent through evaporation, or adding less solvent when preparing the solution. The key is changing the solute-to-solution ratio.

How do I figure out mass percent for solid solutions?

Mass percent (w/w) is calculated as: (mass of solute / total mass of solution) × 100. This is commonly used for solid-solid mixtures like alloys or when precise mass measurements are critical.

When should I use volume percent calculations?

Volume percent (v/v) is typically used when mixing liquids, such as alcohol solutions or chemical reagents. It's calculated as: (volume of solute / total volume of solution) × 100.

What units can I use in percent solution calculations?

You can use any consistent units for mass (pg to kg) and volume (fL to L). The calculator automatically handles unit conversions, but ensure you're using appropriate units for your application scale.