Biology Calculators & Tools
Interactive genetics, molecular biology, cellular microscopy, ecology, evolution, human biometrics, and biological problem-solving calculators. Aligned with AP Biology, IB Biology, Molecular Genetics, Human Physiology, and undergraduate biological science curricula.
Punnett Square Generator (Monohybrid & Dihybrid)
Generate 2×2 and 4×4 Punnett squares with genotypic and phenotypic inheritance ratios
Genetics Probability Calculator
Calculate multi-locus independent assortment probabilities using Mendelian product and sum rules
DNA Complement Calculator
Generate 5' to 3' Watson-Crick complementary DNA strands with base count statistics
DNA Reverse Complement Calculator
Generate 5' to 3' reverse complement sequences essential for PCR primer design and Sanger sequencing
DNA to RNA Transcription Converter
Transcribe DNA sequences to mRNA (T ⟶ U) or reverse-transcribe RNA to cDNA
Genetic Codon Translator (DNA/RNA ⟶ Protein)
Translate nucleotide sequences into 20 amino acid polypeptide chains using the universal genetic code
Hardy-Weinberg Equilibrium Calculator
Calculate allele frequencies (p, q) and genotype frequencies (p², 2pq, q²) in population genetics
Population Growth Calculator (Exponential & Logistic)
Simulate exponential unconstrained growth and logistic carrying capacity S-curve populations
Clinical BMI Calculator (WHO Standards)
Calculate Body Mass Index and healthy weight ranges according to WHO clinical criteria
Basal Metabolic Rate & TDEE Calculator
Calculate daily resting calories (BMR) and total daily energy expenditure (TDEE) using Mifflin-St Jeor
Biological Age Calculator
Estimate biological vs chronological age based on physiological biomarkers and lifestyle metrics
Microscope Magnification Calculator
Calculate total optical magnification M_total = M_ocular × M_objective for light microscopy
Field of View & Cell Sizing Calculator
Estimate individual cellular diameter in micrometers (μm) from field of view (FOV)
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