Solution Dilution Calculator
Apply C1V1 = C2V2 and show stock plus nominal diluent volumes.
What would you like to do next?
Show every term in the dilution equation
Enter stock concentration, target concentration and final millilitres using compatible concentration units. The calculator applies C1V1 = C2V2, reports stock volume, subtracts that value from the nominal final volume and shows the dilution factor. It also flags when the entered target exceeds the stock, because simple dilution cannot create a higher concentration.
Verify the physical preparation method
The arithmetic assumes the concentration basis is compatible and treats final volume simply. Real preparations may require volumetric make-up rather than adding a calculated diluent volume, and chemistry, density, uncertainty and hazards may matter. Follow the approved method and equipment instructions.
Frequently asked questions
Must concentration units match?
They must be compatible on the same basis so the C1 to C2 ratio is meaningful.
Can dilution create a stronger solution?
No. The page flags a target that exceeds the entered stock.
Is diluent always final volume minus stock?
That is a nominal arithmetic value; the approved method may require making up to final volume.