Free Study & Education Tools

A curated hub of free tools for students — math calculators, hands-on physics simulations, grade and GPA calculators, and science explorers. Everything runs in your browser with no sign-up and nothing to install, so you can check homework, revise a concept or plan a grade in seconds. Organised by subject below.

Mathematics

Suite

Math Calculators

Over 80 calculators — arithmetic, fractions, percentages, algebra, calculus, geometry and more, each showing its working.

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Graphing Calculator

Plot functions and see them come to life — a fast way to understand shapes, roots and transformations for algebra and calculus.

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Step-by-Step Solvers

Work a problem through one step at a time — quadratics, triangles, circles, lines, polynomials and regression, each step shown with its reasoning.

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Physics & Science

Suite

Physics Labs

Interactive experiments across motion & gravity, waves & optics, electricity & circuits, energy, storage, propulsion, fields & fluids and chaos — change a variable and watch the result.

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Chemistry Models

Interactive analytical-chemistry models — the Beer–Lambert law, absorbance and %T, photometric error and calibration methods for chemistry and instrumental analysis.

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Space & Astronomy

Explore the solar system and night sky — an orrery and sky explorers for learning planets, orbits and constellations.

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Nature & Plants

Identify plants and explore the natural world — handy for biology and environmental-science projects.

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Earth & Environment

The whole planet — a live disaster map, earthquake, volcano, wildfire, tsunami and drought trackers, a world atlas and climate vital signs.

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Grades & Study

Free

GPA Calculator

Work out your grade point average from course grades and credit hours, on a 4.0 scale.

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Final Grade Calculator

Find the score you need on the final exam to hit your target grade — or your overall grade from the final.

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How to Use These Study Tools

Pick a subject, open a tool, learn faster.

1

Pick a subject

Jump to Mathematics, Physics & Science, or Grades & Study using the rail or the sections above.

2

Open a tool

Each card opens a calculator, a suite or an interactive lab. Calculators check your answers; labs let you change a variable and watch what happens.

3

Learn as you go

Everything runs privately in your browser with no sign-up, so you can revise, verify homework or plan a grade in seconds.

Frequently Asked Questions

Are these study tools free?
Yes, every tool linked from this page is completely free and needs no sign-up. They run in your browser, so there is nothing to install and nothing to pay. The hub gathers tools that already live across LK Forge — math calculators, physics simulations and grade calculators — into one place organised by subject, so a student can jump straight to the right tool for maths homework, a science revision session or working out a final grade.
What subjects do the tools cover?
The hub is organised into three areas. Mathematics covers over 80 calculators from basic arithmetic, fractions and percentages up to algebra, calculus and geometry, plus an interactive graphing calculator. Physics and science link to a set of hands-on simulations — gravity, oscillation, waves, chaos, fields and particle physics — alongside astronomy and nature tools. Grades and study bring together the GPA and final-grade calculators to plan and check your marks. Everything is aimed at students, from school through university.
Can I use these for homework and revision?
Yes — the calculators here are built to show a clear result you can check your own working against, and the physics simulations let you change a variable and watch what happens, which is often the quickest way to understand a concept for an exam. Use the maths calculators to verify answers rather than to replace the method — the point of homework is to learn the steps — and use the graphing calculator and physics labs to build intuition. The GPA and final-grade tools help you plan what you need to score before an exam.
Is my data private?
Every tool here does its work entirely in your browser. Nothing you type — a set of grades, a physics parameter, an answer on a test — is uploaded to a server or stored by us, and no account is required. When you close the tab, the numbers are gone. That makes these safe to use on a shared school or library computer, and it is why they load instantly with no waiting on a network round-trip.
Do the tools work on a phone or tablet?
Yes — the calculators and tests here are responsive and work on a phone, tablet or laptop, so you can check a calculation on the bus or revise from the sofa. The interactive physics and graphing tools are best on a larger screen where you have room to drag and explore, but they still run on a phone. Nothing needs installing from an app store — each tool is just a web page you open in any modern browser.