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Engineering Equations
Browse essential engineering equations, formulas, laws, and theorems for mechanics, structural engineering, fluids, thermodynamics, electrical circuits, electromagnetism, math, and physics. Each equation page explains the formula, variables, units, assumptions, and worked examples.
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Popular Engineering Equations
Quick access to common formulas used in mechanics, circuits, fluids, heat transfer, and structural analysis.
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Force, motion, acceleration, energy, momentum, gravity, and circular motion equations.
Stress, strain, bending, shear, springs, elasticity, and material behavior formulas.
Beam deflection, section properties, and structural analysis equations.
Pressure, velocity, pipe flow, open-channel flow, hydraulic radius, and groundwater equations.
Gas laws, thermal expansion, heat capacity, and heat conduction equations.
Voltage, current, resistance, circuit loops, and electrical relationships.
Electric force, electromagnetic field equations, waves, frequency, radiation, and modern physics formulas.
Core math, geometry, and formulas used across engineering problems.
Engineering Equations, Formulas, and Laws
Turn2Engineering’s engineering equations library helps students, engineers, technicians, builders, and problem solvers quickly find common formulas used in mechanics, thermodynamics, fluid mechanics, electrical circuits, electromagnetism, structural analysis, materials, math, and physics.
Each equation page is designed to explain the formula, define the variables, list common units, describe assumptions, show worked examples, and connect the equation to related calculators when available. Use this page as a formula index when studying engineering concepts, checking homework, preparing for exams, or reviewing practical design calculations.
How to Use This Equation Library
Search by equation name, variable, topic, or use case. For example, you can search “force mass acceleration” to find Newton’s Second Law, “pipe flow” to find continuity and Bernoulli equations, “voltage current resistance” to find Ohm’s Law, or “beam bending” to find structural formulas.
Browse Equations by Engineering Discipline
Mechanics equations cover force, motion, velocity, acceleration, energy, momentum, gravity, and circular motion. Strength of materials equations cover stress, shear, bending, elasticity, and material behavior. Structural engineering equations cover beam deflection and moment of inertia.
Fluid mechanics equations cover flow rate, pressure, velocity, Reynolds number, Bernoulli’s equation, Manning’s equation, hydraulic radius, and Darcy’s law. Electrical and electromagnetic equations cover Ohm’s law, Kirchhoff’s voltage law, Coulomb’s law, Maxwell’s equations, frequency, Planck’s law, and mass-energy equivalence.
Engineering Equations FAQ
What are engineering equations?
Engineering equations are formulas used to model, calculate, and understand physical systems such as forces, motion, heat transfer, fluid flow, electrical circuits, structural behavior, and material properties.
How do I find the right equation?
Use the search box to search by equation name, topic, variable, formula term, or application. You can also filter equations by engineering discipline.
Do these equation pages include examples?
Each equation page should include the formula, variable definitions, common units, assumptions, worked examples, and related calculators where available.
Can I use these equations for final engineering design?
These pages are intended for education, estimating, and preliminary analysis. Final designs should be checked against applicable codes, standards, boundary conditions, manufacturer data, and professional engineering judgment.