Explore Simulations
Discover interactive simulations and professional tools for every level
Featured Simulations
CPAP & Medical Device Outage Ride-Through Planner
Professional medical device backup power planner for CPAP, BiPAP, oxygen concentrators, nebulizers, and home medical equipment. Features animated battery discharge timeline, device power consumption comparison bars, backup source comparison chart (lithium stations, lead-acid, vehicle inverters, solar), runtime countdown gauge, power source flow diagram, multi-device simultaneous load stacking, humidifier/heated-tube wattage modeling, inverter efficiency derating, night-by-night outage planning, cost-per-runtime analysis, and exportable backup plan reports.
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Library Smoke Refuge Staffing, Seating & Noise Planner
Professional facility operations planner for temporary smoke refuge in libraries during wildfire events. Calculates seating capacity using ADA-compliant density standards, staffing ratios per Red Cross shelter guidelines, HEPA purifier noise aggregation using logarithmic dBA addition, electrical outlet load limits per NEC/NFPA, and CADR requirements based on outdoor AQI levels. Features animated floor plan visualization, noise contour mapping, occupancy timeline simulation, ventilation adequacy checks per ASHRAE 62.1, and exportable operations plans.
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Downspout Disconnection Flood-Risk Tradeoff Tool
Professional downspout disconnection flood-risk tradeoff calculator. Compare connected versus disconnected downspouts under varying lot grading, soil infiltration, and storm conditions. Animated roof runoff flow, downspout routing, infiltration visualization, ponding risk map, and grading comparison. Includes IBC/IRC code references, Rational Method hydrology, Green-Ampt infiltration, and downloadable engineering reports.
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Bedroom Nighttime Heat-Survivability Planner for Seniors
Free professional bedroom nighttime heat-survivability planner for seniors. Model overnight bedroom temperature trajectories during heat waves with building thermal mass, window ventilation strategies, fan and portable cooling effects, humidity, and physiological heat-stress risk scoring for elderly occupants. Visualize core body temperature rise, heat index curves, safe sleep windows, and intervention effectiveness. Export clinical-grade heat safety reports.
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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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