Weight/Volume percent

The Weight/Volume Percent calculator computes the percent ratio of a weight (mass) to a volume.

INSTRUCTIONS: Choose unit and enter the following:

• (Ws) Weight of Solute
• (VS) Volume of Solution

Weight/Volume Percent (WV%): The calculator returns the percent

The Math / Science

Chemists frequently like to express their concentration using terms of percentage.  Percentage is parts per hundred.  There are a number of common methods for describing percent composition of solutions, such as: weight percent, volume percent, or weight/volume percent.  Weight/Volume percent is useful when specifying amount of solid reagents diluted in some sort of aqueous solution.

This equation will calculate the Weight/Volume percentage (w/v) of composition of a solution.  

These different variations of % are practical to chemists and cooks. Solids are easier to weigh, while liquids are easier to measure volume. If you want to make a gin and tonic. You might mix 10 mLs of gin with 90 mLs of tonic. In that case you would have a 10% (v/v) solution. 

If you are making instant coffee, you might blend 10 g of Santa with 100 mLs of water. That would be a 10% (w/v) solution. 

If you had a rock that weighted 100g and contained 10g of gold, you would say that it was 10% (w/w) ore.

The w/v designation let’s the user recognize that means g/mL which is also kg/L.

* Note: "weight" is really entered as mass

Measurement of Concentration Calculators

• (w/v) Weight Solute / Volume Solution Percent
• (w/w) Weight Solute / Weight Solution Percent
• (v/v) Volume Solute / Volume Solution Percent