Science
Dilution Calculator
Use the dilution calculator for chemistry prep when a concentrated stock solution is diluted to a target concentration.
Choose the missing quantity; the calculator hides that field and solves it from the others.
Solved value
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- Stock concentration M1
- —
- Stock volume V1
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- Final concentration M2
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- Final volume V2
- —
Student quick launch
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Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the dilution calculator solves
Use the dilution calculator for chemistry prep when a concentrated stock solution is diluted to a target concentration.
Formula
How to use it
- Choose the quantity you want to solve for.
- Enter the known values with consistent units.
- Check the rearranged formula, substitution, and warnings before using the result.
How to read the answer
Dilution keeps moles of solute constant while volume and concentration trade off.
Common mistakes and edge cases
- Use the same volume unit on both sides.
- A dilution cannot make the final concentration higher without adding solute.
- Pipetting precision matters in real lab work.
Worked examples
Find stock volume
Solved value
Stock volume V1 = 0.1 L
Find final concentration
Solved value
Final concentration M2 = 0.2 mol/L
Frequently asked questions
Can the dilution calculator solve for a missing variable?+
Yes. Use the solve-for control to hide the missing value, then enter the other known values with compatible units.
Why do the units matter?+
Formula calculators assume the entered values are already in matching units. Convert first when your measurements use mixed systems.
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Last updated: May 15, 2026