Explore Simulations
Discover interactive simulations and professional tools for every level
Featured Simulations
Wood Beam Span Calculator — Lumber Sizing per NDS & IRC
NDS 2024-compliant wood beam span calculator with species/grade selection, bending/shear/deflection checks, adjustment factors, and animated beam visualization. Supports lumber, glulam, and LVL members.
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Advanced FEA Solver — Finite Element Analysis with 2D/3D, Thermal, Modal & Nonlinear
Full browser-based finite element analysis solver with sparse CG solver supporting 10,000+ DOFs. Features T3, T6, Q4, Q8, and Tet4 elements, Bowyer-Watson Delaunay meshing, WebGL 3D visualization, thermal/modal/nonlinear analysis, adaptive mesh refinement, and VTK export.
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Pipe Stress Analysis Calculator (ASME B31.3)
Free ASME B31.3 pipe stress calculator with animated thermal expansion visualization, stress heat maps, and code compliance checking. Analyze sustained, expansion, and occasional stresses for piping systems. Professional-grade alternative to CAESAR II.
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Weld Strength Calculator (AISC 360 / AWS D1.1 / Eurocode 3)
Free weld strength calculator with Von Mises stress visualization, AISC 360 ASD/LRFD, AWS D1.1, and Eurocode 3 directional method. Analyze fillet, groove, plug welds with animated stress distributions. Professional alternative to paid welding design software.
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Solar System Simulator
Free 3D solar system simulator with accurate orbital mechanics. Zoom into planets, track real orbital periods, and compare sizes and distances. Includes all 8 planets, dwarf planets, and moons. Perfect for astronomy students. Try it free!
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Seasons Simulator - Earth Axial Tilt & Day Length
Free seasons simulator showing how Earth's 23.5° axial tilt creates seasons. Visualize solstices, equinoxes, day length changes, and sunlight angles throughout the year.
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Sorting Algorithm Visualizer
Free sorting algorithm visualizer. Compare bubble sort, merge sort, quick sort, and heap sort step-by-step. Track comparisons, swaps, and time complexity O(n log n) vs O(n²).
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Cell Division Mitosis Simulation - Interphase vs Prophase Comparison
Explore cell division with our free interactive mitosis simulation. Step through each phase and visualize chromosome separation. Perfect for biology students. Try it now!
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Bridge Stress Simulator
Explore bridge stress with our free interactive truss simulator. Adjust loads and bridge types to visualize tension and compression. Perfect for engineering students. Try it now!
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Simple Pendulum Simulator
Free pendulum period calculator using T=2π√(L/g). Adjust length, gravity, and amplitude to explore simple harmonic motion. Includes energy graphs and data collection mode.
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Projectile Motion Simulator
Free projectile motion calculator and simulator. Calculate range, max height, and flight time. Adjust launch angle and velocity to visualize trajectories. Perfect for physics students.
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Mendelian Genetics Breeding Simulator
Explore Mendelian genetics with our free interactive breeding simulation. Adjust traits and generations to visualize inheritance patterns. Perfect for biology students. Try it now!
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Electric Field Visualizer
Free electric field simulator using Coulomb's law F=kq₁q₂/r². Place positive and negative charges to visualize field lines, equipotential surfaces, and calculate field strength.
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Earthquake Wave Propagation Simulator
Free earthquake wave simulator. Visualize P-wave and S-wave propagation from any focal depth. Calculate arrival times, seismic velocities, and amplitude decay. Explore reflection and refraction at layer boundaries. Perfect for geology students. Try it free!
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Root Locus Plotter
Plot root locus diagrams interactively with our free online simulator. Adjust gain K, place poles and zeros, and visualize closed-loop stability in real-time. Ideal for control systems students and engineers.
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PID Controller Tuning Simulator
Free PID controller tuning simulator. Adjust proportional, integral, and derivative gains to optimize step response. Visualize overshoot, settling time, and steady-state error in real-time. Perfect for control engineering students. Try it free!
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