Physics Formulas - PhysRef

PhysRef is the complete physics formula reference designed for students, engineers, and science enthusiasts. Access hundreds of formulas, physical constants, and built-in calculators - all without internet connection.

COMPREHENSIVE FORMULA DATABASE
Browse formulas organized by topic: Mechanics, Thermodynamics, Waves, Electricity and Magnetism, Optics, and Modern Physics. Each formula includes variable definitions, units, and related concepts.

BUILT-IN CALCULATORS
Stop doing manual calculations. Enter your known values and instantly compute the unknown variable. Every calculator validates inputs and displays results with appropriate units.

PHYSICAL CONSTANTS TABLE
Quick access to fundamental constants including speed of light, gravitational constant, Planck's constant, electron mass, Boltzmann constant, and dozens more. All values use standard reference data.

UNIT CONVERTER
Convert between units across 14 categories: length, mass, time, velocity, acceleration, force, energy, power, pressure, temperature, electric charge, electric current, angle, and frequency.

PERSONAL NOTES
Add your own notes to any formula. Perfect for exam prep, recording problem-solving strategies, or marking formulas you find tricky.

FORMULA DERIVATIONS
Understand where formulas come from. See step-by-step derivations that connect fundamental principles to the equations you use.

WORKS COMPLETELY OFFLINE
All content is bundled in the app. Study on airplanes, in basements, or anywhere without signal. No account required. No internet needed.

DESIGNED FOR STUDENTS
Covers content from AP Physics 1, AP Physics 2, AP Physics C, IB Physics, and introductory university physics courses. Whether you are preparing for an exam or solving homework problems, PhysRef has you covered.

PRIVACY FIRST
Your data stays on your device. We do not collect personal information. No tracking. No analytics. No ads.

FEATURES SUMMARY
- Formula browser organized by physics topic
- Search by formula name, variable, or concept
- Calculators for solving problems
- Physical constants with precise values
- Unit converter with 14 categories
- Personal notes on any formula
- Formula derivations and explanations
- Related formulas and connections
- Bookmarks for quick access
- Search history
- Dark and light themes
- 100% offline functionality

Built for physics students who want a reliable, ad-free reference that wo