Dilution Factor Calculator

How to Use the Dilution Factor Calculator

The Dilution Factor Calculator is a free online tool that helps calculate unknown values in solution dilution problems. It's useful for preparing lab reagents, analyzing concentrations, or working on chemical equations using molarity, percent, ppm, ppb, and more.

Select Calculator Type – Start by choosing the type of dilution you want to calculate. Available types include molarity, normality, percent concentration, ppm, and mass per volume.

Enter Any 3 Fields – Input any three of the following: initial concentration (C₁), volume of stock (V₁), final concentration (C₂), or final volume (V₂). The calculator auto-computes the fourth value.

Use Unit Selectors – Choose your preferred units like M, %, mg/mL, or cells/mL using the dropdowns. Advanced users can enable more precise units like fM, nL, or pg/mL by checking the “show advanced units” option.

Calculate Instantly – Click the "Calculate" button to generate the result. It will show the missing value clearly, and for applicable cases, it will also display the dilution factor (like 1:100 or 1:500).

Convert Units Easily – Use the built-in unit converter next to the result field to change between related units without entering values again.

Reset to Start Over – Use the "Reset" button anytime to clear the form and perform a new dilution calculation.

This dilution calculator is ideal for chemistry students, lab technicians, and researchers who need fast and reliable dilution results. No login or registration required.