Engineering Calculators
Professional-grade calculators for engineers. Convert units, calculate material properties, and solve technical problems with precision.
Showing 24 of 27 calculators
Fuel Consumption Calculator
Calculate your vehicle's fuel consumption, trip cost, and CO2 emissions. Supports both metric (L/...
Voltage Drop Calculator
Calculate voltage drop in electrical wiring for single-phase and three-phase circuits. Determine ...
Stair Calculator
Calculate stair dimensions including rise, run, number of steps, stringer length, and angle. Desi...
Solar Panel Calculator
Calculate solar panel system size, daily energy output, number of panels needed, and estimate pot...
Concrete Calculator
Calculate concrete volume and materials needed for your construction project. Supports slabs, foo...
Resistance Calculator
Calculate total resistance for series and parallel resistor circuits, decode 4-band and 5-band re...
Electrical Power Calculator
Calculate electrical power, current, voltage, or resistance from any two known values. Supports D...
HVAC Load Calculator
Calculate HVAC heating and cooling load requirements using Manual J simplified methodology. Deter...
Pressure Calculator
Calculate pressure using force and area (P = F/A), fluid pressure by depth (P = ρgh), or convert...
EV Charging Calculator
Calculate EV charging time, cost, and energy usage for any electric vehicle. Compare Level 1, Lev...
Gear Ratio Calculator
Calculate gear ratios, output speed, and torque multiplication for gear trains, sprockets, pulley...
Heat Transfer Calculator
Calculate heat transfer through materials using conduction, convection, and radiation formulas. D...
Air Flow Calculator (CFM)
Calculate air flow rate (CFM), duct velocity, and duct sizing for HVAC systems. Determine ventila...
Material Strength Calculator
Calculate normal stress (σ = F/A), shear stress (τ = V/A), bending stress (σ = Mc/I), strain (...
Wire Size Calculator
Calculate the correct wire size for your electrical installation. Find AWG or metric wire gauge b...
Battery Calculator
Calculate battery capacity, runtime, charging time, and battery bank sizing. Supports multiple ba...
Force Calculator
Calculate force using Newton's second law (F=ma), net force from multiple forces, weight, frictio...
Duct Sizing Calculator
Calculate the correct HVAC duct size based on airflow (CFM), velocity, and duct type. Supports ro...
Resonance Frequency Calculator
Calculate resonant frequency for LC circuits, RLC circuits (with Q factor and bandwidth), and mec...
Roof Pitch Calculator
Calculate roof pitch from rise and run, convert pitch to degrees, find rafter length, and determi...
Capacitance Calculator
Use our free capacitance calculator for parallel-plate capacitors, series and parallel combinatio...
Beam Load Calculator
Calculate beam deflection, bending stress, and maximum load capacity for simply supported and can...
Velocity Calculator
Calculate velocity, speed, distance, or time using v = d/t. Solve all four kinematic equations wi...
Torque Calculator
Calculate torque from force and lever arm distance, convert between torque units, and calculate p...