What is the final volume of a solution?

Molarity Volume Calculator (g → make up to a target M or mM)

Use this molarity volume calculator to calculate the final volume needed to reach a chosen concentration (M or mM) from a known mass (g) and molecular weight (g/mol). Perfect for quick lab prep: “I weighed X g—what volume should I make up to get Y mM?”

Molecular weight (g/mol) Mass of substance (g)

Target concentration Units mM M

What this calculator does

Enter molecular weight (g/mol), mass (g), and your target concentration (M or mM). The calculator converts grams to moles, then uses the molarity relationship to calculate the volume you must make up to. Results are shown in mL and L.