💧Dilution Calculator
Solve C₁V₁ = C₂V₂ for any missing value, or work out a full serial dilution series.
Free Dilution Calculator
Preparing a diluted solution and need the numbers to check out? Our free dilution calculator solves C₁V₁ = C₂V₂ for whatever value you're missing — stock concentration, stock volume, final concentration, or final volume — with automatic conversion between common concentration and volume units.
It also handles serial dilutions: enter your starting concentration, dilution factor or ratio, and number of steps, and it produces a full table showing the concentration at every step of the series. Each result comes with the working shown, including exactly how much diluent to add to reach your target.
Built for lab prep, stock solution calculations, and stoichiometry homework, it runs entirely in your browser. No sign-up, no downloads, no limits.
About the Dilution Calculator
Features
Solve for any variable
C₁, V₁, C₂, or V₂ — enter the other three and get the missing one.
Unit conversion
Mix concentration and volume units freely; they're converted automatically.
Serial dilution table
Full step-by-step concentration table for a dilution series.
Diluent volume
Explicitly shows how much diluent to add to reach the target.
Frequently Asked Questions
How does the dilution calculator work?
Enter any 3 of concentration/volume before and after dilution; it solves C1V1=C2V2 for the missing value.
Is it free?
Completely free, no sign-up, downloads, or limits.
What units are supported?
Common concentration units (M, mM, µM, %, mg/mL) and volume units (L, mL, µL), with automatic conversion.
Can it handle serial dilutions?
Yes, enter a starting concentration, dilution factor, and number of steps to get a full concentration table.
Does it tell me how much diluent to add?
Yes, it explicitly computes and shows the volume of diluent needed to reach your target.
Does it show the steps?
Yes, the rearranged formula with your actual numbers substituted is shown, plus the full table for serial dilutions.
Can I mix units, like starting in mM and ending in M?
Yes, units are automatically converted before solving.
What if I enter invalid values?
Non-numeric, zero, or negative values are flagged with a clear message.
Is my data stored?
No; everything runs in your browser and isn't stored or sent anywhere.
Does it work on mobile?
Yes, fully responsive on all screen sizes.