A searchable physics formulas cheatsheet with over 100 equations organized by topic. Each formula renders with KaTeX mathematical notation and includes variable definitions. Use the search box or topic filters to find what you need quickly.
How to Use the Physics Formulas Cheatsheet
This reference covers the key formulas from 7 major physics topics. Each card shows the formula in standard mathematical notation, defines every variable, and links to the relevant calculator on this site for hands-on practice.
Searching and Filtering
Type in the search box to filter by formula name, variable name, or topic keyword. Type "kinetic" to find kinetic energy (KE = ½mv²), kinetic friction, and kinetic equations of motion. Type "Ohm" to find Ohm's law and related power formulas. Click a topic pill to show only formulas from that topic area.
Mechanics Formulas
Classical mechanics includes kinematics (equations of motion under constant acceleration), Newton's laws (F = ma), work and energy (W = Fd cos θ, KE = ½mv²), and rotational motion (τ = Iα, L = Iω). The kinematic equations apply when acceleration is constant — this covers most textbook problems involving free fall, projectile motion, and powered vehicles.
Electricity and Magnetism
Electromagnetism formulas span Coulomb's law (F = kq₁q₂/r²), Ohm's law (V = IR), power (P = IV), series/parallel combinations, and magnetic force (F = qvB). Faraday's law (EMF = -N dΦ/dt) is the basis of electric generators and transformers — a changing magnetic flux induces a voltage.
Print as Reference Sheet
Use your browser's print function (Ctrl+P or Cmd+P) to print the cheatsheet. Search bars and filter buttons are automatically hidden, leaving only the formula cards. Filter to a specific topic before printing to create a focused single-topic reference sheet.
FAQ
What topics does this cheatsheet cover?
The cheatsheet covers 7 topics: Classical Mechanics, Thermodynamics, Waves and Optics, Electricity and Magnetism, Modern Physics, Fluid Mechanics, and Physical Constants. Each topic includes 10-25 formulas with variable definitions and links to related calculators.
Can I search for specific formulas?
Yes — use the search box at the top to filter formulas by name, variable, or topic. Type 'kinetic' to find KE formulas, 'Ohm' for Ohm's law, 'Doppler' for the Doppler effect, and so on. Results update instantly as you type.
Is this reference free?
Yes, completely free with no signup required. All formulas are rendered with KaTeX directly in your browser.
Is it print-friendly?
Yes — the search bar and filters are hidden when printing. All formulas and variable definitions remain visible for a clean printed reference sheet.
What is KaTeX?
KaTeX is an open-source JavaScript library that renders LaTeX mathematics notation in web browsers. It produces publication-quality mathematical typesetting, the same standard used in academic journals and textbooks.
How do I use this for exam preparation?
Use the topic filter buttons to focus on one area at a time. Search for a specific concept to find all related formulas across topics. The variable definitions below each formula explain every symbol, and links point to interactive calculators where you can practice applying the formulas.