Interactive Simulations& Professional Engineering Tools
Free simulators, calculators, and analysis tools for science, engineering, and finance. From beam deflection to thermodynamic cycles, structural analysis to portfolio optimization — explore, calculate, and verify.
Why Choose Simulations4All?
Our platform combines cutting-edge technology with educational best practices.
WebGPU Powered
High-performance rendering for complex interactive simulations.
AI Assistant
Your own AI assistant running locally in your browser. No subscriptions, no fees.
Interactive Learning
Adjust parameters in real-time and visualize complex concepts.
SimLab — Compute Anything in Your Browser
510+ MATLAB®-compatible functions. Matrix operations, symbolic math, plotting, signal processing, control systems, and more. No installation. No license fees.
- ✓ Full programming: for loops, functions, if/else
- ✓ Interactive plotting with Plotly.js
- ✓ 16 ready-to-run example scripts
- ✓ MATLAB® costs $2,150+/year — SimLab is free
Trending Simulations
Trending today
Photosynthesis Lab Simulator
Free photosynthesis rate simulator. Adjust light intensity, CO2 concentration, and temperature to measure oxygen production rate. Identify limiting factors and optimal growing conditions. Perfect for biology and botany students. Try it free!
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Standing Waves Calculator: Interactive String Vibration and Harmonics Simulator
Interactive standing waves simulator with audio output, harmonic visualization, node/antinode detection, organ pipe modes, and musical instrument connections
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Lagrange Points Calculator: Interactive Three-Body Equilibrium and Halo Orbit Simulator
Explore the five Lagrange points (L1-L5) of any two-body system. Visualize effective potential, stability, halo orbits around L1/L2, and real missions like JWST, SOHO, and DSCOVR. Adjust mass ratios from Sun-Earth to Earth-Moon and observe zero-velocity curves and Jacobi constant contours.
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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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P&ID Symbols & Diagram Builder
Interactive P&ID symbol library and diagram builder following the ISA 5.1 standard. Browse 40+ searchable symbols across valves, instruments, vessels, pumps, and heat exchangers. Decode instrument tags instantly, drag-and-drop components onto a canvas with animated flow paths, load preset process diagrams (pump loops, distillation columns, reactor systems), and export finished P&IDs as PNG. Free online process engineering reference tool for chemical, mechanical, and instrumentation engineers.
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Chemical Processing Plant Simulator
Comprehensive chemical plant simulator for oil refining, gas processing, ammonia synthesis, and petrochemical operations. Interactive process flow diagrams, material/energy balances, distillation column design, and reactor modeling. Free professional tool for chemical engineers.
View SimulationNewest Simulations
Recently published simulations fresh from our lab
Solar PV & MPPT Controller Simulator
Free solar PV and MPPT controller simulator. Visualize I-V and P-V curves with animated maximum power point tracking using Perturb & Observe, Incremental Conductance, and Constant Voltage algorithms. Model single-diode PV cells with series/shunt resistance, temperature and irradiance effects, partial shading multi-peak analysis, and fill factor calculation. Export professional reports. Includes STC, morning, hot noon, cloudy, and partial shade presets. Try it free!
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Archimedes Screw Pump Flow Rate & Lift Calculator
Free Archimedes screw pump calculator. Calculate flow rate, lift height, RPM optimization, and power requirements. Compare with chain pump, rope pump, ram pump, and treadle pump. Includes animated screw rotation, efficiency curves, and cross-section visualization.
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Blackbody Spectrum
Interactive Planck radiation law visualizer with multi-curve overlay, Wien displacement law, Stefan-Boltzmann total power, and ultraviolet catastrophe comparison. Overlay up to 5 temperature curves, compare stellar spectra, and explore quantum physics foundations.
View SimulationYour Personal AI Tutor — Running Locally in Your Browser
Meet your new study companion. Our AI Tutor runs entirely on your device using WebGPU — no cloud servers, no subscriptions, no data leaving your computer. Choose from three models based on your device's capabilities and get instant help understanding any simulation.
Lite
~1.4 GB • Desktops, laptops & Chrome iOS (experimental)
Fast responses for quick questions. Perfect for phones, tablets, and older laptops.
Standard
~2 GB • Desktops & laptops only
Best balance of speed and quality. Great for most laptops and desktops.
Advanced
~2.3 GB • Desktops & laptops only
Best reasoning for complex physics problems. Requires modern GPU with 4GB+ VRAM.
Device Compatibility
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Browse simulations organized by subject area
Astronomy
Stars, planets, galaxies
11 simulationsBiology
Cells, genetics, ecosystems
24 simulationsChemistry
Reactions, molecules, elements
24 simulationsComputer Science
Algorithms, data structures
66 simulationsEarth Science
Geology, weather, climate
12 simulationsEngineering
Structures, circuits, systems
358 simulationsFinance & Economics
Financial concepts, investment strategies, and economic principles.
38 simulationsHealth
Body systems, disease prevention, and wellness.
34 simulationsMathematics
Algebra, geometry, calculus
24 simulationsPhysics
Mechanics, waves, thermodynamics
66 simulationsSocial Sciences
Policy models, social dynamics, and decision-making.
21 simulationsReady to Get Started?
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