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Solution Dilution Calculator

Solve dilution problems using C1V1 = C2V2 for preparing solutions from stock concentrations.

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Solution Dilution Calculator

The Solution Dilution Calculator helps chemists, biologists, and laboratory technicians calculate the volumes needed to prepare a diluted solution from a concentrated stock solution. It is based on the fundamental dilution equation:

$$C_1 V_1 = C_2 V_2$$

where C1 and V1 are the concentration and volume of the stock solution, and C2 and V2 are the desired concentration and volume of the diluted solution. Simply enter any three values to calculate the fourth.

For more specialized dilution calculations, check out our Cell Dilution Calculator for cell culture applications and the Dilution Calculator for general laboratory use.

Frequently Asked Questions

What is the dilution formula?

The dilution formula is C1V1 = C2V2, where C1 is the stock concentration, V1 is the stock volume needed, C2 is the desired final concentration, and V2 is the desired final volume. This formula works because the total amount of solute remains constant during dilution.

What is a serial dilution?

A serial dilution is a stepwise dilution where the diluent from one step is used as the stock for the next step, creating a geometric series of concentrations. Use our Serial Dilution Calculator for multi-step dilution protocols.