Scientific tools laboratory
From a question
to a result.
Calculators and simulations for the natural and exact sciences, designed to help you understand the model behind each result.
- Calculators
- 65
- Widgets
- 12
- Topic areas
- 28
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Chemistry
Matter, solutions and transformation
Fields of exploration
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Lab selection
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Featured tools
Explore phenomena across disciplines with interactive models and clear results.
ChemistryReactions and electrochemistryRedox Equation Balancing by Half-ReactionsBalance net ionic equations for inorganic redox reactions by half-reactions in acidic or basic medium, with a step-by-step solutionPhysicsRelativityRelativistic KinematicsCompute the Lorentz factor, time dilation, longitudinal length contraction, simultaneity, and the relativistic Doppler effectBiologyGeneticsMendelian Cross (Complete Dominance)Simulate 1-4 gene Mendelian crosses under complete dominance with Punnett square and statistical probability panelPhysicsGravitation and orbitsKepler's LawsSimulate Newtonian two-body elliptical orbits by solving Kepler's equation. Computes period, specific energy, angular momentum, periapsis/apoapsis and extreme speeds. Animated with vectors and a numerical check of the 2nd law.MathematicsStatistics and probabilityProbability DistributionsComputes probabilities, percentiles and moments for Normal, Binomial, Poisson, Exponential, Gamma, Beta, Student's t, Chi-square and F distributions. Features interactive density and cumulative plots, and critical-value lookupGeosciencesGeochronologyRadiometric DatingSimulate ideal model ages and isotopic composition for C-14, U-Pb, K-Ar, and Rb-Sr, with an interactive curve and geological timeline
Quick tools
Shortcuts to frequently used calculations and utilities.