Molarity Calculator
Molarity Calculator
Molarity (M) measures a solution's concentration as moles of solute per liter of solution. Choose which quantity you want to solve for, enter the other two known values, and this calculator computes the missing one.
Molarity is by far the most commonly used concentration unit in chemistry, showing up in everything from preparing a reagent at a specific strength to calculating the volumes needed for a titration — a solution with 0.5 mol of solute dissolved to a total volume of 2 L has a molarity of 0.25 mol/L. When the task shifts from "what's the concentration" to "how do I dilute this stock solution to a target concentration," the related Dilution Calculator (built around C1V1 = C2V2) is the more direct tool for that specific follow-up question.
- The core formula is M = moles ÷ liters, so a solution with 0.5 mol dissolved in 2 L has a molarity of 0.25 mol/L.
- Molarity is the most common way concentration is expressed in chemistry, used for everything from titrations to dilution calculations.
- Use the Dilution Calculator if you need to figure out how to dilute a stock solution to a target concentration.
How do I calculate molarity?
Divide the moles of solute by the volume of the solution in liters: M = mol ÷ L.
What is the molarity of a solution with 0.5 moles in 2 liters?
0.5 mol ÷ 2 L = 0.25 mol/L (0.25 M).
Molarity Calculator
Molarity (M) measures a solution's concentration as moles of solute per liter of solution. Choose which quantity you want to solve for, enter the other two known values, and this calculator computes the missing one.
Molarity is by far the most commonly used concentration unit in chemistry, showing up in everything from preparing a reagent at a specific strength to calculating the volumes needed for a titration — a solution with 0.5 mol of solute dissolved to a total volume of 2 L has a molarity of 0.25 mol/L. When the task shifts from "what's the concentration" to "how do I dilute this stock solution to a target concentration," the related Dilution Calculator (built around C1V1 = C2V2) is the more direct tool for that specific follow-up question.
- The core formula is M = moles ÷ liters, so a solution with 0.5 mol dissolved in 2 L has a molarity of 0.25 mol/L.
- Molarity is the most common way concentration is expressed in chemistry, used for everything from titrations to dilution calculations.
- Use the Dilution Calculator if you need to figure out how to dilute a stock solution to a target concentration.
How do I calculate molarity?
Divide the moles of solute by the volume of the solution in liters: M = mol ÷ L.
What is the molarity of a solution with 0.5 moles in 2 liters?
0.5 mol ÷ 2 L = 0.25 mol/L (0.25 M).