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
Electron Configuration and Periodic Trends Builder
Interactive electron configuration builder with animated orbital filling, noble gas shorthand, periodic table heatmaps, ion formation mode, and trend overlays for atomic radius, ionization energy, and electronegativity. Click any element to visualize its electron structure.
View Simulation
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!
View Simulation
Digital Modulation Techniques Visualizer
Free interactive digital modulation simulator. Visualize ASK, FSK, BPSK, QPSK, 8-PSK, 16-QAM, and 64-QAM with constellation diagrams, bit error rate analysis, and spectral density. Essential for communications engineering students.
View Simulation
Chemical Nomenclature Trainer: Interactive Ionic, Covalent & Acid Naming Practice
Free interactive chemical nomenclature trainer with instant feedback. Practice naming ionic compounds, covalent molecules, acids, and hydrates. Includes formula-to-name and name-to-formula modes, polyatomic ion reference, timed quiz, and common mistake analysis.
View Simulation
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.
View Simulation
DNA Replication and Protein Synthesis Explorer: Interactive Transcription, Translation & Mutation Simulator
Explore DNA replication, transcription, and translation with our free interactive simulator. Watch helicase unzip DNA, build mRNA strands, translate codons into amino acids, and see how mutations change proteins. Perfect for biology students.
View SimulationNewest Simulations
Recently published simulations fresh from our lab
Optimum Autofrettage Pressure Solver: Quartic Fits, Flat Optima and Sobol Uncertainty
Free optimum autofrettage pressure calculator. Differentiate FE-fitted quartics of bore hoop stress for a 15-5PH thick cylinder, find the 960 / 937 / 882 MPa optima, compare an assumed 0.4 overstrain threshold under von Mises and Tresca, and attach uncertainty to every input with live Sobol indices.
View Simulation
Shakedown Boundary Calculator: Autofrettaged Cylinder Bree Map with Ratcheting Limits
Free shakedown and ratcheting calculator for thick-walled autofrettaged cylinders. Drag the operating point on a live Bree-style map of pulsating pressure against through-wall temperature range, see which limit it breaks first, and get the minimal pressure or temperature cut back to shakedown.
View Simulation
Cracked Cylinder Prototype Similarity Checker: Fracture Test Scaling and Size Effect
Free fracture-similitude tool for down-scaled cracked cylinders. Set a/W, r_i/r_o, (p_i - p_o)/sigma_y and r_p/W, pick a scale factor, and the tool builds the original and prototype, audits J scaling, plastic-zone size ratio, crack-tip offset and the ASTM E399 size rule, then finds by bisection the largest scale-down you can trust.
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
Explore by Category
Browse simulations organized by subject area
Astronomy
Stars, planets, galaxies
23 simulationsBiology
Cells, genetics, ecosystems
49 simulationsChemistry
Reactions, molecules, elements
34 simulationsComputer Science
Algorithms, data structures
85 simulationsEarth Science
Geology, weather, climate
36 simulationsEngineering
Structures, circuits, systems
506 simulationsFinance & Economics
Financial concepts, investment strategies, and economic principles.
50 simulationsHealth
Body systems, disease prevention, and wellness.
45 simulationsMathematics
Algebra, geometry, calculus
48 simulationsPhysics
Mechanics, waves, thermodynamics
109 simulationsSocial Sciences
Policy models, social dynamics, and decision-making.
26 simulationsReady to Get Started?
Join thousands of engineers, students, and researchers using our interactive simulations and professional tools. Free to use — no downloads, no installations.
Create Free Account