Weight / Volume Percent (w/v %)
Mass per Volume Dilution Calculator (w/v, w/w, v/v %)
Mass per volume concentration is one of the most commonly used ways to express solution strength in chemistry, pharmacy, and laboratory work. It is especially useful when preparing solutions in labs, hospitals, and industrial settings. This calculator helps you easily determine concentration in three formats: weight/volume (w/v %), weight/weight (w/w %), and volume/volume (v/v %).
Weight/volume percent (w/v %) represents grams of solute per 100 mL of solution. For example, a 5% w/v solution means 5 grams of solute dissolved in 100 mL of solution. This is widely used in pharmaceutical preparations like saline or glucose solutions.
Weight/weight percent (w/w %) expresses grams of solute per 100 grams of total solution. For instance, a 10% w/w solution means 10 grams of solute in 100 grams of solution. This is commonly used in solid mixtures and food chemistry.
Volume/volume percent (v/v %) is used when both solute and solvent are liquids. It represents milliliters of solute per 100 mL of solution. For example, 70% v/v ethanol means 70 mL ethanol diluted to 100 mL total solution.
To use this calculator, simply enter the mass or volume values and select appropriate units. The calculator automatically converts units and provides accurate percentage concentration. It is very useful for students, pharmacists, and laboratory professionals who need quick and reliable dilution calculations.
Example: If you dissolve 2 g of sodium chloride in 100 mL of water, the concentration is 2% w/v. Similarly, mixing 50 mL ethanol with water to make 100 mL solution results in 50% v/v.
Using this tool reduces calculation errors and saves time, making it ideal for daily lab work, exam preparation, and research applications.
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