Dilution Calculator (C1V1 = C2V2)
Solve C1V1 = C2V2 for any one value to dilute a stock solution to the concentration you need.
Stock volume
25 mL
- Solvent to add (V2 − V1)
- 75 mL
- Dilution factor
- 1 : 4
Both concentrations must use the same unit, and both volumes the same unit.
Show the work
The amount of solute stays the same when you dilute
C1 × V1 = C2 × V2
C2 × V2 = 0.5 × 100 = 50
Solve for V1
V1 = C2 × V2 ÷ C1
50 ÷ 2 = 25 mL
How it works
C1 × V1 = C2 × V2 (stock concentration × stock volume = final concentration × final volume)
Questions
- How does the dilution calculator (C1V1 = C2V2) work?
- C1 × V1 = C2 × V2 (stock concentration × stock volume = final concentration × final volume).
- What do I need to enter?
- Solve for, Concentration unit, Volume unit, C1 — stock concentration, V1 — stock volume, C2 — final concentration, V2 — final volume. Optional fields can be left blank.
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