Solution Dilution Calculator

Use this solution dilution calculator to find out how you can dilute a stock solution of a given concentration in order to acquire a diluted solution’s arbitrary volume. This is a very helpful tool which performs the calculations for you so that you don’t have to calculate manually when you need to find the values of volume and concentration.

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How to use the solution dilution calculator?

The great thing about this solution dilution calculator is that it’s very easy to understand and to use. Even if it’s your first time to use this dilution calculator, as long as you have the required values, you’re good to go. Here are the steps to follow for this solution calculator:

  • First, enter the value of the Initial Concentration and choose the unit of measurement from the drop-down menu.
  • Then enter the value of the Initial Volume and choose the unit of measurement from the drop-down menu.
  • After entering the required values, the molar dilution calculator automatically performs the calculation to give you the values of the Final Concentration and Final Volume.

How do you calculate the dilution of a solution?

Dilution of a solution refers to the process of adding a solvent to a solution for the purpose of decreasing the solution’s concentration. The process maintains the constancy of solute amount but it increases the solution’s total amount which, in turn, decreases the final concentration.

You can also dilute a solution by mixing a solution with a higher concentration with an identical solution with a lesser concentration. Diluting a solution is an important laboratory process since stock solutions are typically bought and stored in forms which are very concentrated.

In order for you to utilize a solution in a laboratory like for titration or for any other kind of process, you must accurately dilute it first to a lesser concentration. To do this, you must mathematically calculate the volume of the solvent you would require to prepare the correct concentration of a new solution.

The main purpose of this dilution calculator is to help you determine how to dilute a solution properly. Let’s say, for instance, that you have a hydrochloric acid solution that’s very concentrated. You can use this solution calculator to find out the amount you require if you would like to end up with a diluted solution of 200 mL that has a concentration of 20 mM.

Of course, you can also calculate this value by hand without using the molar dilution calculator. To do this, use the following formula:

m₁ * V₁ = m₂ * V₂


m₁ refers to the concentration of the stock solution
m₂ refers to the concentration of the diluted solution
V₁ refers to the volume of the stock solution
V₂ refers to the volume of the diluted solution

However, it’s important to note that this formula isn’t equivalent to the proportion formula.

How do you dilute concentration?

As aforementioned, the dilution of a solution refers to the process of reducing a solute’s concentration in a solution. You can do this by adding water to the solution or by adding more solvent to the solution.

Therefore, to dilute concentration means that you add more solvent without adding more solute. This results in a solution which is thoroughly mixed to ensure that all of the parts of your solution are identical.

How is medication dilution calculated?

Medication dilution is a lot like dilution of a solution since it also refers to the process of decreasing a solution’s concentration when you add more solvent to it. The formulas which are typically used for this process are only useful for diluting medications from a higher concentration percentage to a lower one.

While you can also use this solution dilution calculator for medication dilution, you must know more about the medication you plan to dilute before administering it to a patient. Also, those who will compound or dilute medications must use the correct algebra formula if when performing the computations by hand.

In pediatric practice, professionals calculate medication dosages based on the weight of the child. This is important because dosages must be very accurate before they’re administered to infants and young children. Although medication dilution is also applicable for pediatric practice, there are other factors you must also consider.

How do you calculate dilution factor?

Before calculating the dilution factor, you need two values namely the original volume of the diluted solution and the final volume of the solution after dilution. You can also get the volume you’ve added to the solution to dilute it. In such a case, the value of the final volume is the original volume plus the value of the added volume.

When using an online calculator, input these values in the required fields to get the dilution factor along with the dilution performed in relative notation. But if you want to perform the calculation by hand, use the following formula:


How do you calculate diluted molarity?

Before we learn how to calculate diluted molarity, let’s first learn the definition of the term. Molarity also means the same as molar concentration. Molarity refers to the concentration of a given solution. By definition, it’s the number of moles of a solute or substance dissolved in a liter of a solution.

If you need to calculate diluted molarity, you can use the following formula:

molarity = concentration / molar mass

In this formula, the concentration stands for the mass concentration of a given solution. You express this using the units of density which are usually g/ml or g/l.

Another term related to molarity is molar mass which refers to the mass of a single mole of a given solute. You express this in grams per mole. Molar mass is a type of constant property possessed by each substance. For instance, the molar mass of water is around 18 g/mol.

For this, you can also perform a manual calculation using this formula:

mass / volume = concentration = molarity * molar mass


mass refers to the mass of a solute or substance in grams
volume refers to the total volume of a solution in liters