90+ simulators and growing
Physics, chemistry, finance, education, and life tools — all free online simulators in one place.
Free Online Interactive Tools
FreeSimulators 90+ free online simulators, zero sign-up
Explore free online simulators for physics, chemistry, finance, and life — every tool runs directly in your browser with instant interactive controls and no account needed.
Physics, chemistry, finance, life tools — all free online simulators, interactive and shareable.
Free online simulators for every topic
FreeSimulators brings science, finance, and everyday free online simulators together in one browser-based suite.
Interactive science and chemistry labs
Explore gravity, pendulums, airfoils, gas laws, acid-base titrations, and solar eclipses with real-time visualizations. No equipment, no lab — just your browser.
Practical finance and life tools
Plan a mortgage, estimate commute costs, track hydration, or calculate a restaurant tip — tools built for real decisions, not just homework.
Just-for-fun simulators
Pretend to hack a mainframe, win the Hunger Games, or slam a floor in frustration — viral moments and playful tools that are impossible not to share.
Why FreeSimulators?
Our collection of free online simulators is built to make complex ideas instantly explorable.
No sign-up, no paywall
Every simulator is free to use in your browser. No account, no install, no limit.
Real-time interactive controls
Sliders and inputs update the result instantly — explore by doing, not just reading.
Shareable by URL
Your settings are encoded in the link. Share a specific scenario with one copy-paste.
Works on any device
All simulators are mobile-optimized and run in any modern browser.
5 languages supported
FreeSimulators is available in English, Chinese, Japanese, Indonesian, and Malay.
Other free simulators
Explore more browser tools from FreeSimulators.
Cat Simulator
Become a cat for a minute, choose a breed and name, run daily cat actions, and share the result.
Hug Simulator
Create a gentle 3D hug scene, compare height difference, switch viewpoints, and share the result.
Gravity Simulator
Drop planets, stars, and black holes into an N-body physics sandbox with shareable presets.
Solar Eclipse Simulator
Enter a city or coordinates, choose an eclipse event, and estimate local visibility, timing, obscuration, and safety reminders.
Acid Base Titration Simulator
Choose acid and base types, add titrant drop by drop, and see pH, color change, equivalence point, unknown concentration, error, and conclusion.
Chemical Equilibrium Simulator
Choose a reversible reaction, set initial concentrations, temperature, pressure, and catalyst, then watch concentration curves reach equilibrium and explain shifts.
Budget Simulator
Enter income, rent, food, transportation, entertainment, shopping, subscriptions, insurance, debt repayment, and savings goals to see remaining cash and budget pressure.
Mortgage Simulator
Enter home price, down payment, loan amount, rate, term, taxes, insurance, and HOA to compare monthly payment and total interest.
How to use our free online simulators
Every free online simulator follows the same pattern: open, adjust, learn or share.
01
Find a simulator
Browse by category or scan the featured picks below. Over 50 tools are available with no account required.
- Filter by subject on the tools page
- Try the featured picks on this page
02
Adjust the inputs
Every simulator has real-time controls. Move sliders, enter values, and watch the result update instantly.
Most simulators encode your settings in the URL so you can share or bookmark any setup.
03
Share or save your result
Copy a link, download a snapshot, or share directly to social platforms — all from inside the simulator.
URL-based sharing means your friend sees the exact same state you configured.
Pick a simulatorFrequently asked questions
Common questions about using FreeSimulators.
Are all free online simulators on FreeSimulators 100% free?
Yes. Every free online simulator on FreeSimulators is 100% free to use with zero hidden costs, paywalls, or subscription fees required.
Do I need to sign up or download software to run a simulator?
No. All simulators run entirely in your web browser. There are no apps to install, no plugins required, and no account registration needed.
Can I bookmark or share my interactive simulator results?
Yes. Most simulators encode your custom settings directly into the web link. Simply copy and share the URL, or use built-in image downloads.
Are the science and finance simulators accurate?
Our science, physics, and finance simulators use standard mathematical equations and physical formulas designed for education, learning, and real-time estimation.
What categories of free online simulators are available?
We offer over 50 free web simulators across science & physics labs, financial calculators, educational tools, and fun interactive web games.
Do these free online simulators work on mobile phones and tablets?
Yes. All simulators are fully responsive and mobile-optimized, allowing you to run physics experiments, financial calculations, and interactive tools on iOS, Android, tablets, and desktop computers without downloading any apps.
Do I need to worry about privacy or data tracking when using a simulator?
No. Your privacy is protected. FreeSimulators processes calculation logic client-side in your web browser, meaning your personal financial inputs, personal data, and test parameters are never stored on external servers.
Can teachers, students, or creators use these interactive simulators for free?
Yes. Teachers, students, researchers, and content creators are welcome to use our free interactive simulators in classroom presentations, online courses, blogs, or study materials.
Ready to explore free online simulators?
Browse all 90+ free online simulators in one place.
No sign-up. No install. Just open and start.
All simulators are free and work in any modern browser.
