Hello Bio Molarity Calculator

The Hello Bio Molarity Calculator gives you an easy way to calculate the mass, volume or concentration required for making a solution! There are 4 parameters: mass, concentration, volume and molecular weight (MWt). Just input any 3 of the 4 parameters – and the calculator will work out the fourth!

Savings on DREADD ligands, stem cell tools, ion channel modulators, enzyme inhibitors

You can use the Hello Bio molarity calculator to answer the following questions:

  • I want to make a solution and know the volume and concentration that I require. What mass of compound do I need?
  • I have weighed out a known mass of compound, and want to make a solution of a specific concentration - what volume of solution do I need to add?
  • I have dissolved a known mass of compound in a specific volume of solution - what is the final concentration of my solution?

How does it work? The molarity equation

The Hello Bio molarity calculator uses the following equation: Mass (g) = Concentration (mol/L) x Volume (L) x Molecular Weight (g/mol)

How to use the calculator - a worked example

Below is an example calculation using NBQX disodium to show you how to use the Hello Bio molarity calculator.

The molecular weight of your compound is 380.24. What is the mass of compound needed to make a 10 mM stock solution in 10 ml of water?

  1. Enter 380.24 into the Molecular Weight (MWt) box
  2. Enter 10 into the Concentration box and select the correct unit (millimolar)
  3. Enter 10 into the Volume box and select the correct unit (milliliter).
  4. Press calculate
  5. The answer of 38.024 mg appears in the Mass box

Other useful resources

If you need any further help with handling, storing or solubilising your product, check out our technical FAQs for biochemicals and peptides. These not only give you handy hints on how to use the products safely and store them properly, they also contain all the technical information you need, as well as essential info on solubility and stability.

Save up to 50% on our product range!

When you get to the stage of planning your experiments, don't forget that we offer a range of agonists, antagonists, inhibitors, activators, antibodies and fluorescent tools that are really low cost (at up to half the price of other suppliers). You can use our Quick Multi-Search Tool to search for lots of products in one go, and the range includes:

Life Scientist Guides and Scientist Support

You can find additional support and information on our blog, including Life Science Guides and support for scientists.