The Cheat Sheet Your Math Teacher Never Gave You.
Cheat on confusion. Not your homework.
Learn algebra, geometry, calculus, statistics, and more with simple explanations, step-by-step examples, and practice.
Browse by Subject
Pick a subject and start mastering it.
Basic Math
Addition, subtraction, multiplication, division, fractions, decimals, and percentages.
Pre-Algebra
Integers, factors, ratios, proportions, and intro to variables.
Algebra I
Linear equations, inequalities, polynomials, and factoring.
Algebra II
Quadratics, functions, logarithms, and sequences.
Geometry
Lines, angles, triangles, circles, area, and volume.
Statistics
Mean, median, mode, probability, and standard deviation.
Precalculus
Functions, trigonometry, limits, and conic sections.
Calculus
Limits, derivatives, integrals, and applications.
College Math
Linear algebra, discrete math, and advanced topics.
Formula Library
Students LOVE formula sheets. Here are the essentials.
Quadratic Formula
Solves any quadratic equation ax² + bx + c = 0.
Slope Formula
The steepness of a line between two points.
Slope-Intercept Form
A line where m is slope and b is the y-intercept.
Point-Slope Form
A line through point (x₁, y₁) with slope m.
Distance Formula
Distance between two points on a coordinate plane.
Pythagorean Theorem
Relates the sides of a right triangle.
Area of a Circle
Area enclosed by a circle of radius r.
Circumference
Perimeter (distance around) a circle.
Everything You Need
Tools to help you learn faster and stress less.
Formula Library
Every formula you need, explained simply.
Ask Math AI
Get step-by-step help at your level.
GPA & Grade Calculators
Final exam calculator, GPA calculator, and more.
Homework Helper
Upload a problem. Get every step explained.
Practice Generator
Generate practice problems at any difficulty.
Final Exam Cheat Sheets
One-page printable PDFs for every final.
Ask Math AI
Not just an answer — a full explanation.
Explain it like I'm:
How to Actually Learn Math
A formula sheet only helps if you know how to use it. Here's how to make math finally click.
1. Understand before you memorize
Formulas are shortcuts for ideas. Before you commit one to memory, ask what it's actually doing. The quadratic formula isn't magic — it's just the fastest way to find where a parabola crosses zero. Once the idea makes sense, the formula sticks because it has somewhere to live in your brain.
2. Work problems, not just examples
Reading a solved example feels like understanding — until you face a blank problem. Real learning happens when you attempt a problem yourself, get stuck, and figure out why. Use the Practice Problems tool to generate fresh problems, try them, then reveal the steps only after you've attempted it.
3. Find your gaps, then target them
Most students struggle because one earlier concept is shaky, not because the current topic is hard. If algebra feels impossible, the real issue might be fractions or negative numbers. Use Ask Math AI to ask "what do I need to know before I can understand this?" and shore up the foundation first.
4. Explain it back in plain English
If you can't explain a concept in everyday words, you don't fully understand it yet. After learning something, close the page and try to teach it to an imaginary friend. Wherever you get fuzzy is exactly what to review next.
"Cheat on confusion. Not your homework."