Biology Calculators
Professional tools for Biology Calculators
Our Biology Calculators collection covers everything from health and fitness to genetics, microbiology, ecology, and biochemistry. Whether you need to calculate your BMI, solve a Punnett square, figure out bacterial growth rates, or understand population genetics, our 85 free biology calculators are here to help with complete step-by-step solutions!
kDa Calculator β Convert Daltons to Kilodaltons & Estimate Protein Size
Convert between Da, kDa and MDa instantly, estimate protein molecular weight from amino acid count or gene length, and predict SDS-PAGE band position with a visual gel diagram
Use Calculator βBiodiversity Index Calculator β Shannon, Simpson & Species Richness
Calculates biodiversity indices from species abundance data including Shannon-Wiener diversity Simpson's diversity species richness Compares biodiversity between two communities.
Use Calculator βIsoelectric Point Calculator β pI from Protein or Peptide Sequence
pI from any protein or peptide sequence, view the charge vs pH curve, compute net charge at any pH, and use the MCAT pI formula.
Use Calculator βProtein Molecular Weight Calculator β From Sequence or Formula
Calculate protein molecular weight from amino acid sequence or formula. Includes amino acid MW table, extinction coefficient at 260nm, and nmol-to-ΞΌg conversion.
Use Calculator βChi-Square Calculator β Goodness of Fit, Test of Independence & Critical Values
run goodness of fit tests and tests of independence with full (OβE)Β²/E working tables, p-values, critical values, and CramΓ©r's V effect size. Supports contingency tables up to 6Γ6
Use Calculator βHardy-Weinberg Calculator β Allele & Genotype Frequency Solver
Solve p, q, pΒ², 2pq, qΒ² from any known value recessive phenotype frequency, allele frequency, or observed counts Includes genotype frequency calculator, allele frequency calculator, and phenotype frequency calculator
Use Calculator βPunnett Square Calculator – Generator for Mono, Di, Tri & Quadhybrid Crosses
Create 2Γ2 monohybrid, 4Γ4 dihybrid, 8Γ8 trihybrid, and 16Γ16 quadhybrid crosses instantly. Includes ABO blood type, X-linked, and special cross modes.
Use Calculator βDNA Molecular Weight Calculator – MW, Concentration, A260/280 Purity
compute MW from sequence or length, convert between ng/Β΅L, nM, and pmol, calculate DNA concentration and purity from A260/A280 spectrophotometer readings. Supports dsDNA, ssDNA, and RNA
Use Calculator β Free chemistry, physics, biology & math calculators with step-by-step solutions. Trusted by 100,000+ students. Solve any science problem instantly!
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