Volume Percent Calculator Formula
Understand the math behind the volume percent calculator. Each variable explained with a worked example.
Formulas Used
Volume Percent
volume_percent = (vol_solute / vol_solution) * 100Variables
| Variable | Description | Default |
|---|---|---|
vol_solute | Volume of Solute(mL) | 30 |
vol_solution | Volume of Solution(mL) | 100 |
How It Works
How to Calculate Volume Percent
Formula
Volume % = (volume of solute / volume of solution) × 100
Commonly used for liquid-in-liquid solutions such as alcohol in water.
Worked Example
30 mL of ethanol in 100 mL of solution.
vol_solute = 30vol_solution = 100
- 01Volume % = (30 / 100) × 100
- 02Volume % = 30%
Frequently Asked Questions
What is volume percent?
Volume percent (v/v%) is volume of solute divided by total volume of solution, times 100. It is used for alcohol content in beverages.
Why might volumes not be additive?
Intermolecular forces can cause the total volume to differ from the sum of individual volumes when mixing different liquids.
How do you convert volume percent to molarity?
Molarity = (v/v% × 10 × density) / molar mass, where density is in g/mL.
Ready to run the numbers?
Open Volume Percent Calculator