Research Calculators

Everyday bench calculations for solutions, nucleic acids, PCR, cell culture, microbiology and protein work: molarity, dilutions, PCR master mix, DNA/RNA concentration, cell seeding, MOI, OD600, CFU, standard curves and more. Everything runs in your browser; nothing is uploaded.

Looking for gene, protein or structure analysis instead? Explore the bioinformatics tools.

Solutions & Dilutions

Molarity & Mass to Weigh

Concentration from a weighed mass, or the mass needed for a target concentration.

M = mass (mg) ÷ (MW × volume (mL))

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Computed locally — no data leaves your browser. Results are guides: check them against your protocol, reagent datasheets and instrument calibration before use.