Free DNA molecular weight calculator 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
Free reverse complement calculator for DNA and RNA sequences. Find the complement, reverse, and reverse complement instantly. Supports IUPAC ambiguity codes, FASTA input, GC content, palindrome detection, and DNA-to-mRNA transcription
Free implicit differentiation calculator with full term-by-term working. Find dy/dx for any implicit equation, evaluate at a point, find tangent lines, and compute second derivatives d²y/dx². Includes step-by-step chain rule annotation
Free chain rule calculator with full step-by-step decomposition into outer f(u) and inner g(x) functions. Solves single-variable, nested triple composition, and multivariable chain rule with partial derivatives. Instant results with verification
Free antiderivative calculator. Find the indefinite integral of any function — polynomials, trig, exponentials, logarithms — with complete step-by-step working showing every integration rule applied and automatic verification
reaction order calculator solve zero order, first order, and second order integrated rate laws, calculate half-life, find rate constant k, and determine reaction order from experimental data with step-by-step working
Free partial derivative calculator. Compute ∂f/∂x, ∂f/∂y, second-order, mixed partial derivatives, gradient, and directional derivatives for any multivariable function with full step-by-step working
Free force calculator solve F = ma for force, mass or acceleration, calculate net force from multiple forces, find applied force with friction, and compute average force using impulse-momentum theorem. Full step-by-step working
Free gravitational potential energy calculator – solve GPE = mgh for any variable, calculate ΔGPE between two heights, compute gravitational force with Newton’s law. All planets included with step-by-step working
Free average acceleration calculator – solve a = (vf−vi)/t, find acceleration from distance and time, acceleration without time using vf²=vi²+2ad, and centripetal acceleration. Full step-by-step working