Comprehensive collection of free engineering calculators for professionals and students
Beam, column, and concrete design tools
Calculate deflection and stress for simply supported and cantilever beams
PopularDesign steel and concrete columns for axial and eccentric loads
EssentialDesign steel members including beams, columns, and connections
Calculate concrete mix proportions for various strength requirements
Calculate moments of inertia for various cross-sections
Calculate reinforcement bar requirements for concrete elements
Circuit analysis, wire sizing, and power calculations
Determine correct wire gauge based on current and distance
PopularCalculate voltage, current, and resistance in series/parallel circuits
EssentialCalculate electrical power, energy, and power factor
Apply Ohm's law to find voltage, current, or resistance
Size transformers for single and three-phase applications
Calculate motor starting currents and sizing requirements
Gears, fasteners, bearings, and power transmission
Calculate gear ratios, output speed, and torque
PopularFind bolt sizes, torque values, and material grades
EssentialSelect appropriate bearings based on load and speed
Calculate belt, chain, and shaft power transmission
Design shafts for torsional and bending loads
Design compression and tension springs
Road design, drainage, soil analysis, and earthwork
Calculate road gradients, curves, and sight distances
PopularCalculate storm water drainage requirements
EssentialDetermine soil bearing capacity from test data
Calculate cut and fill volumes for excavation projects
Calculate elevations, distances, and areas from survey data
Design flexible and rigid pavement structures
Reactor design, pipe sizing, and process calculations
Design batch and continuous reactors
PopularDetermine optimal pipe diameter for fluid transport
EssentialCalculate fluid flow rates and velocities
Size heat exchangers for various applications
Calculate pressure losses in pipe systems
Size pumps for fluid transport systems
Material properties, weight calculations, and thermal analysis
Calculate weight of various metal shapes and sizes
PopularQuery tensile strength, yield strength, and hardness values
EssentialCalculate thermal expansion for various materials
Convert between different hardness scales
Calculate stress, strain, and modulus values
Estimate component fatigue life under cyclic loading
Pollution control, wastewater treatment, and environmental analysis
Calculate pollutant concentrations and dispersion
PopularCalculate treatment requirements and efficiency
EssentialCalculate wind loads and wind power potential
Calculate flow velocity in pipes and channels
Calculate hydraulic radius for various channel shapes
Calculate heat stress index for worker safety
Safety factors, load analysis, and risk assessment
Calculate safety factors for structural components
PopularAnalyze dead, live, and environmental loads
EssentialEvaluate and prioritize engineering risks
Analyze potential failure modes and effects
Calculate ergonomic risk factors in workplace design
Calculate required fire exit capacity and distances