Dilution Calculator

This covers the dilutions that are written as a strength or as a ratio rather than in moles. Give a stock strength, the strength you want and the final volume, and it returns how much stock to measure and how much diluent to add, plus the amount of solute that ends up in the finished solution. A second mode lays out a serial dilution, with the transfer volume, the diluent per tube and the concentration at every step. A third turns a label ratio into millilitres and fluid ounces, and shows both readings of it, because a bottle rarely says whether 1:10 means one part in ten or one part in eleven.

Calculator Type
Strength Is Measured In
Volume Unit

For a strength written as a percentage, as mg/mL or as ppm. Both strengths must be in the same unit; the unit itself cancels out of the arithmetic.

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Strength Is Measured In
Volume Unit

A chain of equal steps, each carrying the same transfer volume into the same tube volume. Useful for a standard curve or a plate titration.

10 means each tube is a tenth of the one before it. 2 means a doubling dilution.
The volume you want each tube to hold once the transfer is mixed in.
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Volume Unit

Turns a ratio such as 1:10 into real volumes, and shows both readings of it, because a label almost never says which one it means.

The concentrate side of the ratio, usually 1.
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