ToolFusion's Formula Database collects the most commonly used engineering formulas, equations, and physical laws across all disciplines.

Featured Formula Categories

Fluid Mechanics: Darcy-Weisbach Equation, Bernoulli's Equation, Hagen-Poiseuille Law, Navier-Stokes Equations, Continuity Equation, Hazen-Williams Formula, Moody Chart, Affinity Laws, Joukowsky Equation, Manning's Equation, Ergun Equation.

Thermodynamics & Heat Transfer: Fourier's Law, Newton's Law of Cooling, Stefan-Boltzmann Law, LMTD Method, Chilton-Colburn Analogy.

Electrical Engineering: Ohm's Law, Power Factor, Swing Equation, Voltage Drop Formula, Cable Sizing, K-Factor, Harmonics, Line Outage Distribution Factors.

Structural & Civil: Meyerhof's Bearing Capacity, Active/Passive Earth Pressure, Rankine's Theory, Manning's Equation, Green-Ampt Infiltration, Effective Stress, Partial Safety Factors.

Chemical & Process: Fick's Laws, Raoult's Law, Henry's Law, Arrhenius Equation, Power-Law Kinetics, Batch/CSTR/PFR Design Equations, Thiele Modulus, Ergun Equation, Buckingham Pi Theorem.