biology

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

Calculates biodiversity indices from species abundance data including Shannon-Wiener diversity Simpson’s diversity species richness Compares biodiversity between two communities.

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.

Calculate protein molecular weight from amino acid sequence or formula. Includes amino acid MW table, extinction coefficient at 260nm, and nmol-to-μg conversion.

run goodness of fit tests and tests of independence with full (O−E)²/E working tables, p-values, critical values, and Cramér’s V effect size. Supports contingency tables up to 6×6

Solve p, q, p², 2pq, q² from any known value recessive phenotype frequency, allele frequency, or observed counts Includes genotype frequency calculator, allele frequency calculator, and phenotype frequency calculator

Create 2×2 monohybrid, 4×4 dihybrid, 8×8 trihybrid, and 16×16 quadhybrid crosses instantly. Includes ABO blood type, X-linked, and special cross modes.

compute MW from sequence or length, convert between ng/µL, nM, and pmol, calculate DNA concentration and purity from A260/A280 spectrophotometer readings. Supports dsDNA, ssDNA, and RNA