Volume percent

The Volume Percent calculator computes the percent of solute by volume verses the volume of solution. 

INSTRUCTIONS: Choose units and enter the following:

• (Vs) Solute Volume
• (VS) Solution Volume

Volume Percent (v/v): The calculator returns the concentration as a percent.  However, this can be automatically converted to compatible units via the pull-down menu.

The Math / Science

This equation will calculate the Volume percentage (v/v) of composition of a solution.  It is common when specifying that a certain amount of chemical should be diluted with another to specify the volume percent. 

The formula for volume percent of Solute in Solution is:

v/v = Vs/VS

where:

• (v/v) = Volume Percent
• Vs = volume of solute
• VS = volume of solution

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.  These different variations of % are practical to chemists and cooks. Solids are easier to weigh, while liquids are easier to measure volume.

The Measurement of Concentration Calculator computes the percent concentration based on an amount of solute and an amount of solution.  The three functions are:

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

Examples

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.

* Note: "weight" is really entered as mass