🧬 Genetics & Molecular Biology Calculators
DNA, Punnett squares, Hardy-Weinberg, PCR and lab dilutions. Browse 31 free genetics & molecular biology calculators, each with the formula, a worked example and an interactive chart.
DNA GC Content CalculatorFind GC percentage, length and melting temperature of a DNA sequence.Reverse Complement CalculatorGenerate the reverse complement and RNA transcript of a DNA sequence.DNA Base Composition CalculatorCount A, T, G and C bases in a sequence.DNA Concentration from A260 CalculatorConvert absorbance at 260 nm to DNA concentration.DNA Copy Number CalculatorConvert a DNA mass to number of copies.Primer Melting Temperature CalculatorEstimate Tm and annealing temperature of a PCR primer.PCR Master Mix CalculatorScale a PCR reaction recipe for multiple samples.PCR Amplification CalculatorCompute product copies after PCR cycles.Ligation Insert:Vector Ratio CalculatorFind how much insert DNA to add for a molar ratio.Punnett Square Calculator (Monohybrid)Find offspring genotype and phenotype ratios for a single-gene cross.Dihybrid Cross Phenotype CalculatorShow the classic 9:3:3:1 ratios for two heterozygous genes.Hardy–Weinberg Equilibrium CalculatorCompute genotype frequencies from allele frequency.Carrier Frequency from Disease Incidence CalculatorEstimate carrier frequency from the incidence of a recessive disorder.Allele Frequency CalculatorFind allele frequencies from genotype counts.Chi-Square Test for Genetics CalculatorTest whether observed offspring match a Mendelian ratio.Genetic Map Distance CalculatorConvert recombinant offspring to map units.Mutation Rate CalculatorEstimate mutation rate per base per generation.Protein Molecular Weight from Residues CalculatorEstimate protein mass from amino acid count.Gene Length from Protein CalculatorFind coding sequence length from protein size.Bacterial Growth CalculatorPredict bacterial population after a growth period.Doubling Time CalculatorFind doubling time from two cell counts.Cell Counting (Hemocytometer) CalculatorCompute cell concentration from a hemocytometer count.OD600 to Cell Density CalculatorEstimate E. coli density from OD600.Lab Buffer Preparation CalculatorFind grams of solute needed for a buffer.Protein Sample Loading CalculatorFind the volume of sample to load for a target protein mass.Enzyme Activity CalculatorCompute enzyme units and specific activity.Transcription and Translation Product CalculatorEstimate protein copies from mRNA copies and translation rate.Microscope Total Magnification CalculatorCompute total magnification and the actual size of a specimen.Gel Molecular Weight EstimatorEstimate band size from migration distance using two markers.Osmolarity CalculatorFind the osmolarity of a salt or sugar solution.Blood Type Inheritance Probability CalculatorProbability a child has blood type O from two heterozygous A or B parents.
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