Can I mix concentration units?
No. Keep all concentrations in the same unit (e.g., molarity or % w/v). Convert before entering the numbers.
Step-by-step walkthrough
Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.
Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.
Step 1
Pick the unknown (stock concentration, stock volume, target concentration, or target volume).
Step 2
Enter the three known values.
Step 3
Review the solved number and copy it straight into your lab notes.
No. Keep all concentrations in the same unit (e.g., molarity or % w/v). Convert before entering the numbers.
Use the calculator once per stage and carry the intermediate concentration/volume forward to the next step.