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Dilution Calculator
Calculate the stock volume and diluent for a target concentration and final volume, or split a total dilution into equal serial steps.
How do I calculate a dilution?
For a direct dilution, use C₁V₁=C₂V₂: stock concentration × stock aliquot equals target concentration × final volume. For example, 10 M stock diluted to 2 M with a 1 L final volume needs 0.2 L of stock and 0.8 L of diluent, assuming volumes are additive.
Frequently asked questions
How do I calculate a dilution?
For a direct dilution, use C₁V₁=C₂V₂: stock concentration × stock aliquot equals target concentration × final volume. For example, 10 M stock diluted to 2 M with a 1 L final volume needs 0.2 L of stock and 0.8 L of diluent, assuming volumes are additive.
Are my solution values uploaded?
No. The calculator runs in your browser and does not upload or save your inputs.
What does C₁V₁=C₂V₂ mean?
It equates the amount of solute before and after an ideal dilution: stock concentration times stock aliquot equals target concentration times final solution volume. Use matching concentration units and the total final volume.
How does equal-step serial dilution work?
The calculator divides the total stock-to-target factor into the selected number of equal concentration factors, then estimates the transfer aliquot and remaining diluent for each same-size step.
Does the result give safe instructions for mixing chemicals?
No. It is arithmetic only and does not assess hazards, compatibility, purity, heat release or lab technique. Follow the chemical safety documentation and qualified laboratory procedures.