Physics Formulas - PhysRef

PhysRef is the complete physics formula reference built for students, engineers, and science lovers. Access hundreds of formulas, physical constants, and built-in calculators - all without an internet connection. COMPREHENSIVE FORMULA DATABASE Browse formulas grouped by topic: Mechanics, Thermodynamics, Waves, Electricity and Magnetism, Optics, and Modern Physics. Each formula includes variable definitions, units, and key related ideas. BUILT-IN CALCULATORS Stop manual maths. Enter your known values and instantly calculate the unknown variable. Each calculator checks your inputs and shows results with the correct units. PHYSICAL CONSTANTS TABLE Quick access to essential constants including the 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. Ideal for revision, recording problem-solving steps, or saving formulas you find tricky. FORMULA DERIVATIONS See where formulas come from. Follow step-by-step derivations that link core principles to the equations you use. WORKS COMPLETELY OFFLINE All content is built into the app. Study on planes, in basements, or anywhere with no signal. No account required. No internet needed. MADE FOR STUDENTS Covers AP Physics 1, AP Physics 2, AP Physics C, IB Physics, and introductory university physics. Whether you are preparing for an exam or doing homework, 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 by physics topic - Search by formula name, variable, or concept - Calculators to solve 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 support Built for physics students who want a dependable, ad-free reference that works anywhere. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/