Mass by Volume Percentage Calculator (w/v) – Calculate Solution Concentration



Solute Mass & Solution Volume
Calculated Percentage
Mass by Volume % (w/v)
5.00 %
Solute Mass in Grams 5.00 g
Total Volume in mL 100.00 mL
Formula (Mass in g / Volume in mL) × 100

About Mass by Volume Percentage (w/v) Calculator

Not every solution concentration needs to be written in molarity or molality. Mass by volume percentage, written as % w/v, is another common way to describe how much solute is present in a solution. It tells you the number of grams of solute contained in 100 mL of solution.

The Mass by Volume Percentage (w/v) Calculator makes this calculation straightforward. Enter the mass of the solute and the final volume of the solution, and the tool determines the percentage concentration.

For example, a solution containing 5 g of solute in 100 mL of solution has a concentration of 5% w/v. If the volume is different, the same relationship can be used to scale the result.

This format is widely seen in laboratory preparations, chemistry exercises, and formulations where a mass amount is compared with a measured liquid volume.

One detail that often causes mistakes is using the volume of the final solution, not simply the amount of solvent added. Also, the mass should normally be expressed in grams and volume in milliliters when reporting % w/v.