Biological & Lab Calculators
A collection of free, client-side tools for common calculations in biology and chemistry labs. No data is sent to our servers. Educational use only.
Dilution Calculator
Calculate C₁V₁ = C₂V₂ for stock solution dilutions.
Molarity Calculator
Convert between molarity, mass, and volume.
Unit Converters
Tools for RPM/RCF, mass/moles, and more.
Beer–Lambert Law
Solve for absorbance, concentration, or path length.
Reverse Complement
Get the reverse complement of a DNA/RNA sequence.
GC Content & Tm
Calculate GC percentage and melting temperature (Tm).
Primer Mix Calculator
Prepare a working primer solution from stock.
Hardy–Weinberg
Calculate allele and genotype frequencies.
Buffer pH Calculator
Use the Henderson–Hasselbalch equation.
Enzyme Units
Convert between U, mU, and katal for enzyme activity.