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.
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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
Corporate Accounting Simulation
Free interactive corporate accounting simulator with journal entries, T-accounts, financial statement generation, ratio analysis, GAAP vs IFRS comparison, and depreciation methods. Supports transaction engine, chart of accounts, income statement, balance sheet, and cash flow statement. Built for CPA candidates, accounting students, and finance professionals.
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Central Limit Theorem Simulator
Free Central Limit Theorem simulator. Watch sample means converge to normal distribution regardless of population shape. Adjustable sample size n, multiple distributions, and live histograms.
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Design of Experiments (DOE) Simulator
Free interactive DOE simulator with animated visualizations. Design full factorial, fractional factorial, Plackett-Burman, and response surface experiments. Features main effects plots, interaction plots, Pareto charts, ANOVA analysis, and design matrix generation. Educational presets, data simulation, and exportable reports.
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Cellular Automata Explorer
Interactive cellular automata explorer with Wolfram 1D rules (0-255), Conway Game of Life patterns, and custom rule editor. Visualize entropy, population dynamics, and emergent complexity.
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LLM Token Counter & Visualizer: See How AI Models Tokenize Your Text
Interactive LLM token counter and visualizer. Paste text and see exactly how GPT-4, LLaMA, and Claude tokenize it. Color-coded token display, cost estimation, and educational tokenization breakdown. Understand BPE, SentencePiece, and why token count matters.
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RLC Circuit Resonance Calculator
Free RLC circuit resonance calculator. Find resonant frequency, bandwidth, and Q factor for series and parallel RLC circuits. Visualize Bode plots, impedance curves, and phasor diagrams. Perfect for electrical engineering students. Try it free!
View SimulationNewest Simulations
Recently published simulations fresh from our lab
Power and Efficiency Calculator
Interactive power-and-efficiency ledger for P = W/t = Fv. Set a rated useful-output force, operating-load factor, displacement, time, and assumed input-loss shares; then inspect exact energy closure in the Sankey, API, and export. Includes an ideal boundary and algebraic target-power solver, not a device prediction or engineering optimizer.
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Hydrogen Balmer Wavelength–Energy Ledger
Calculate idealized hydrogen Balmer line centres from the Rydberg relation and reconcile wavelength, frequency, wavenumber, and photon energy with spectral limits explicit.
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Ideal Solenoid Signed-Field Ledger
Calculate the signed axial field of a long ideal solenoid from turns, length, current, and linear relative permeability, with direction and model limits explicit.
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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21 simulationsEngineering
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464 simulationsFinance & Economics
Financial concepts, investment strategies, and economic principles.
47 simulationsHealth
Body systems, disease prevention, and wellness.
43 simulationsMathematics
Algebra, geometry, calculus
33 simulationsPhysics
Mechanics, waves, thermodynamics
93 simulationsSocial Sciences
Policy models, social dynamics, and decision-making.
26 simulationsReady to Get Started?
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