Engineering
Electrical, mechanical, structural, civil and chemical engineering calculators. Every page below is currently a stub: the working tool, its formula and its worked example are published one calculator at a time, and a page is listed in the index allowlist only once it is finished.
98 calculators in 10 subjects.
Building services engineering
Civil Foundation and Survey Engineering
- Asphalt Pavement Structural Number Layer Thickness Toolstub
- Bridge Truss Method-of-Joints Axial Tension Compression Vectorstub
- Concrete Volume Slab Column Pour Cubic Yard Estimatorstub
- Earthwork Cut-and-Fill Cross Section Volume Contour Toolstub
- Foundation Bearing Capacity Terzaghi Safety Factor Modelerstub
- Pipe Flow Friction Head Loss Hazen-Williams Equation Toolstub
- Rebar Spacing Structural Reinforcement Total Weight Grid Toolstub
- Retaining Wall Soil Pressure Factor-of-Safety Modelerstub
- Stormwater Runoff Peak Flow Rational Method Matrixstub
- Surveying Traverse Misclosure Error Precision Adjusterstub
Electrical engineering
- Capacitor Calculator (Series, Parallel, Energy And Reactance)stub
- Electric Motor Sizing Calculatorstub
- Generator Sizing Calculatorstub
- Inductor And Coil Calculatorstub
- Ohm's Law Calculatorstub
- Power Factor Correction Calculatorstub
- RC Time Constant Calculatorstub
- RLC Circuit And Impedance Calculatorstub
- Series And Parallel Resistor Calculatorstub
- Short Circuit Current Calculatorstub
- Solar Array And Battery Bank Sizing Calculatorstub
- Transformer Turns Ratio And Sizing Calculatorstub
- Wire Size And Ampacity Calculatorstub
Electronics and Hardware Engineering
- 4-Band and 5-Band Resistor Color Code Ohms Value Finderstub
- 555 Timer Astable Mode Pulse Width Frequency Design Toolstub
- Decibel (dBm) to Milliwatts (mW) RF Power Converterstub
- LED Series Resistor Current Limiter Sizerstub
- Ohm's Law Volts Amps Watts Ohms Matrixstub
- Operational Amplifier Closed-Loop Gain Feedback Resistor Toolstub
- PCB Trace Width Ampacity Temperature Rise (IPC-2152) Toolstub
- RC Filter Cutoff Frequency Low-Pass High-Pass Toolstub
- Transformer Sizing KVA Phase Current Coiling Ratio Toolstub
- Voltage Divider Output Resistor Rail Calculatorstub
Environmental and Power Engineering
- Biomass Methane Gas Yield Anaerobic Digester Matrixstub
- Carbon Emissions Footprint Greenhouse Gas Equivalence Toolstub
- Geothermal Heat Pump Coefficient of Performance Loop Sizerstub
- Hydroelectric Gravity Head Water Volume Megawatt Generatorstub
- Lithium Battery Bank Ah Capacity Discharge Runtime Modelerstub
- Nuclear Core Neutron Multiplication Factor Critical Mass Toolstub
- Power Factor Correction Capacitor KVAR Phase Alignment Toolstub
- Solar Panel Array Power Inverter Peak Yield Toolstub
- Three-Phase Electrical Current Unbalanced Neutral Load Estimatorstub
- Wind Turbine Theoretical Power Output Betz Limit Toolstub
Industrial and Chemical Engineering
- Chemical Solution Molarity Dilution Volumetric Matrixstub
- CNC Machining Feed Rate Spindle RPM Surface Speed Matrixstub
- Conveyor Belt Speed Material Mass Capacity Flow Toolstub
- Heat Exchanger LMTD Matrixstub
- Ideal Gas Law PV=nRT Molecular Density Expansion Toolstub
- Industrial Pump NPSH Cavitation Risk Toolstub
- pH and pOH Hydrogen Ion Concentration Logarithmic Toolstub
- Radioactive Half-Life Isotopic Decay Remaining Mass Toolstub
- Stoichiometric Limiting Reactant Yield Calculatorstub
- Venturi Meter Pressure Drop Mass Flow Rate Toolstub
Mechanical and Aerodynamic Engineering
- Aerodynamic Lift and Drag Coefficient Wind Velocity Toolstub
- Beam Deflection Structural Load Point Stiffness Toolstub
- Gear Ratio Speed Reduction Torque Output Toolstub
- Horsepower-to-Torque RPM Inversion Toolstub
- HVAC Duct Sizing CFM Airflow Friction Loss Toolstub
- Hydraulic Cylinder Extension Force Fluid PSI Area Calculatorstub
- Mach Number Speed of Sound Toolstub
- Reynolds Number Laminar vs Turbulent Flow Pipe Toolstub
- Spring Constant Hooke's Law Force Displacement Matrixstub
- Thermal Expansion Material Length Temperature Delta Toolstub
Mechanical engineering
Quality and reliability engineering
Structural engineering
- Beam Deflection Calculatorstub
- Bolted Connection Capacity Calculatorstub
- Column Buckling Calculator (Euler And Johnson)stub
- Concrete Shear Reinforcement Calculatorstub
- Rebar Development And Lap Splice Length Calculatorstub
- Reinforced Concrete Beam Design Calculator (Flexure)stub
- Retaining Wall Design Calculatorstub
- Seismic Base Shear Calculatorstub
- Shear And Bending Moment Diagram Calculatorstub
- Snow Load Calculatorstub
- Spread Footing Size Calculatorstub
- Steel Beam Size Calculatorstub
- Stress, Strain And Hooke's Law Calculatorstub
- Timber Beam And Joist Span Calculatorstub
- Truss Analysis Calculator (Method Of Joints)stub
- Weld Size And Capacity Calculatorstub
- Wind Load Calculatorstub