EngineerHub category // General Engineering
General Engineering
Start with broadly useful engineering utilities and fundamentals: unit conversion, density, gas laws, thermal expansion, physical-property references and visual physics tools.
9 calculator / tools5 interactive simulators2 study materials16 pages total
Some engineering tools are useful across almost every discipline. This collection provides general-purpose calculators, converters and visualizations for quantities, materials and physical fundamentals that do not belong cleanly to a single specialist category. It is also a good starting point when you are unsure which discipline-specific page you need.
Choose a tool below by purpose. Individual pages include their own assumptions, equations, references and limitations where applicable.
Calculators & tools
9 pages
Density CalculatorCalculate density from mass and volume in kg/m³, g/cm³ or lb/ft³ with instant SI and US unit conversion.→Ideal Gas Law CalculatorSolve the ideal gas law for pressure, volume, amount of gas, temperature, density, and gas mass with SI and US customary units.→Interactive Ashby ChartInteractive Ashby-style materials selection chart with 100 engineering materials, property ranges, density, Young's modulus, strength, thermal conductivity, performance-index lines and…→LMTD CalculatorCalculate log-mean temperature difference for counterflow or parallel-flow heat exchangers from the four terminal temperatures, plus heat duty from UA.→Mass to Volume ConverterConvert mass to volume or volume to mass using material density. Supports kg, tonnes, pounds, litres, cubic metres and cubic feet.→NTU-Effectiveness CalculatorCalculate heat exchanger effectiveness from NTU and heat capacity rate ratio for counterflow or parallel-flow arrangements, and find outlet temperatures.→Random Number GeneratorGenerate uniformly random integers or decimal numbers within a custom range. Choose quantity, precision, and whether duplicate values are allowed.→Thermal Expansion CalculatorCalculate expansion, contraction, strain and restrained stress for 50+ metals, plastics, glass, stone, composites and wood in SI or US units.→Unit ConverterConvert engineering units for length, pressure, flow, power, energy, force, radiation, concentration, ppm and more. Includes density-based ppm to mg/L conversion.→
Interactive simulators
5 pages
Coriolis Effect & Foucault Pendulum SimulatorSimulate Coriolis deflection, Foucault pendulum precession, Rossby number and geostrophic balance with latitude-dependent Earth rotation.→Doppler Effect SimulatorInteractive Doppler effect simulator for moving sound sources and observers, fly-by pitch shift, Mach cones and relativistic light Doppler shift.→Pendulum SimulatorInteractive pendulum simulator for nonlinear motion, the small-angle approximation, energy, damping, driven resonance, coupled pendulums and physical pendulums. Explore live animated…→Refraction / Snell's Law SimulatorInteractive refraction and Snell's law simulator. Explore refractive index, bending of light, critical angle, total internal reflection, glass slabs, apparent depth, prisms and…→Wave Interference SimulatorInteractive wave interference simulator for superposition, phase and path difference, two coherent sources, double-slit interference, standing waves and beats. Explore live animated waves,…→
Study materials
2 pages
Engineering Material PropertiesEngineering material properties database for steels, nickel alloys, aluminium, copper alloys, polymers, ceramics, semiconductors, composites, concrete, glass and wood. Compare density,…→Young’s Modulus ValuesBrowse typical Young’s modulus ranges and calculate elastic stress, strain, extension, force and strain-energy density.→