Percent Solution Calculator

Solution concentration is often expressed as a percentage. This tool handles mass/volume (w/v%), weight/weight (w/w%), and volume/volume (v/v%) percent with reverse solving.

Mass/volume percent (common in biology and medicine):

$$\text{w/v\%} = \frac{\text{mass of solute (g)}}{\text{volume of solution (mL)}} \times 100$$

Example: 7.8 g sugar in 62 mL solution gives $(7.8/62) \times 100 = 12.58\%$ w/v.

Weight percent compares masses: $\text{w/w\%} = (m_\text{solute}/m_\text{solution}) \times 100$. Volume percent compares liquid volumes: $\text{v/v\%} = (V_\text{solute}/V_\text{solution}) \times 100$.

Frequently Asked Questions

What is mass/volume percent?

Mass/volume percent is grams of solute per 100 mL of solution. A 5% w/v NaCl solution has 5 g NaCl per 100 mL.

How is w/v% different from w/w%?

w/v% uses solution volume in the denominator. w/w% uses total solution mass. They differ when solution density is not 1 g/mL.

How do I increase solution concentration?

Add more solute, use less solvent, or both, until the desired percent is reached.

What is ppm in this context?

Parts per million equals percent concentration times 10,000. A 1% solution is 10,000 ppm.

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Percent Solution Calculator

Percent Solution Calculator

Frequently Asked Questions

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