Biology Calculators
Explore accurate biology calculators for genetics, laboratory research, animal care, livestock, gardening, crops, forestry, and biological measurements. Calculate, analyze, and understand biological data with practical tools designed for students, researchers, professionals, farmers, gardeners, and animal owners.
Featured biology calculators
The most useful tools across genetics, animals, and plants.
DNA Concentration Calculator
Calculate DNA concentration from amount and volume, A260 absorbance, dilution (C1V1), total DNA, and pipette volume — with ng/µL and µg/mL units.
Protein Concentration Calculator
Calculate protein concentration from mass/volume, A280 Beer–Lambert, C1V1 dilution, or Bradford/BCA/Lowry standard curves — mg/mL and µg/mL.
Hardy-Weinberg Equilibrium Calculator
Calculate expected genotype frequencies (p², 2pq, q²) from allele frequencies.
Punnett Square Calculator
Generate a monohybrid Punnett square with genotype and phenotype ratios from parent alleles.
Dog Age Calculator
Convert dog years to human years using the science-based 16·ln(age)+31 formula.
Dog Calorie Calculator
Calculate daily dog calorie needs (RER and MER) from weight and activity level.
Cat Age Calculator
Convert cat years to human years using the feline age progression formula.
Plant Population Calculator
Calculate plant population per acre or hectare from row and plant spacing.
Tree Age Calculator
Estimate a tree's age from species, DBH, and growth rate without cutting it.
Browse by category
Explore 10 biology categories with 106 calculators total.
Biology Laboratory
8DNA & protein concentration, dilution, ligation, qPCR, generation time.
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Genetics
10Punnett squares, Hardy–Weinberg, allele frequency, DNA to mRNA.
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Animal Pregnancy
10Gestation due dates for dogs, cats, cows, horses, goats, and more.
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Dog Calculators
17Age, calories, food, size, toxicity, water, crate, and cost tools.
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Cat Calculators
9Age, calories, BMI, size, toxicity, quality of life, and fish oil.
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Other Animals
10Birds, horses, rabbits, rats, turtles, crickets, and dry matter.
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Livestock
5Mortality rate, stocking rate, FCR, grain bin, and fence cost.
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Gardening & Crops
25Plant population, mulch, fertilizer, irrigation, yield, and VPD.
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Tree & Forestry
7Tree age, height, diameter, basal area, spacing, and timber value.
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Other Biology
5MLVSS, wastewater BOD, protein molecular weight, pet sitter rates.
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