Calculator Directory
Molecular Biology Calculators
Practical calculators for protein, DNA, and RNA work.
Available tools4 live
Protein Molarity Calculator
Convert between mass and moles for proteins. Includes weight↔mole, molar concentration, and molecule count.
Protein pI and MW Calculator
Calculate theoretical pI, average and monoisotopic molecular weight, net charge at any pH, and view the charge-vs-pH curve.
DNA Reverse Complement
Converts a DNA sequence into its reverse, complement, or reverse-complement counterpart.
Nucleic Acid Mass Calculator
Convert DNA or RNA mass, moles, and copy number from length. Supports ssDNA, dsDNA, ssRNA, and dsRNA.
Biology tools for everyday lab planning
These calculators are built for common molecular biology tasks: converting between mass and molar amount, estimating molecular weight, checking DNA sequence orientation, and planning nucleic acid inputs for PCR, cloning, sequencing, and assay work.