Which laboratory solution calculator should I use?
Start with the quantity you need to find. Use the stock solution dilution calculator when C1, C2, and final volume V2 are known. Use the serial dilution calculator when the concentration change must be split across repeated tube-to-tube transfers. Choose molarity or reconstitution when a compound mass is part of the question, and use the two molecular converters when volume is not the unknown.
Each calculator keeps its equation and supported units visible. This makes it easier to distinguish final solution volume from solvent added, molarity from mass concentration, and moles from mass before entering values.
Choose a stock solution or serial dilution calculator
The C1V1 = C2V2 dilution calculator solves the stock aliquot V1, diluent volume, and one-step dilution factor. It is the direct choice for preparing a lower-concentration working solution from a known stock.
The serial dilution calculator calculates the per-step factor, transfer volume, diluent volume, and concentration in every tube. It is better suited to large total dilution factors or direct transfer volumes that fall below a reliable pipette range.
Choose a molarity, reconstitution, or percent solution calculator
The molarity calculator connects compound mass, molecular weight, final solution volume, and molar concentration. The reconstitution calculator instead divides a vial mass by a desired mass concentration to find volume. Use the percent solution calculator for w/v, v/v, or w/w preparations where the concentration is expressed per 100 parts.
Choose an mg/mL to molarity or moles to grams converter
The mg/mL to molarity calculator converts mass per volume and molar concentration through molecular weight. The moles to grams calculator converts amount of substance and compound mass without using solution volume. In both tools, the molecular weight must match the exact material being measured.