Engineering Calculators
Select a calculator below to perform fast, accurate calculations.
Acceleration Calculator
Free Acceleration Calculator. Compute uniform linear acceleration a = (v - v0)/t, distance, and experienced G-force.
EngineeringAllowable Stress Calculator
allowable stress calculator allowable design stress from material yield or ultimate strength and factor of safety. Accurate engineering calculator for allowable stress (sigma_allow = sigma_limit / FOS).
EngineeringAngular Velocity Calculator
Free Angular Velocity Calculator. Compute angular speed omega = v / r, RPM, radians/second, and centrifugal acceleration.
EngineeringAxial Stress Calculator
axial stress calculator normal stress from applied axial load and cross-sectional area. Accurate engineering calculator for axial stress (sigma = F / A).
EngineeringBeam Deflection Calculator
Free Beam Deflection Calculator. Computes maximum central deflection, slope, bending moment, and flexural stress for structural engineering beams.
EngineeringBending Stress Calculator
Calculate flexural bending stress in structural beams (sigma = M*y / I = M / S) across rectangular, circular, and standard I-beam cross sections.
EngineeringBernoulli's Equation Calculator
bernoulli's equation calculator fluid pressure, velocity, and elevation head from conservation of energy. Accurate engineering calculator for Bernoulli's equation (P1 + 0.5*rho*v1^2 + rho*g*z1 = P2 + 0.5*rho*v2^2 + rho*g*z2).
EngineeringBulk Modulus Calculator
bulk modulus calculator volumetric elasticity from hydrostatic pressure and volume change. Accurate engineering calculator for bulk modulus (K = Delta P / (Delta V / V0)).
EngineeringBuoyancy Calculator
buoyancy calculator Archimedes' principle buoyant force from fluid density and submerged volume. Accurate engineering calculator for buoyant force (Fb = rho * V * g).
EngineeringCarnot Efficiency Calculator
Free Carnot Efficiency Calculator. Compute maximum thermal cycle efficiency (eta = 1 - Tc/Th) in Kelvin and Celsius.
EngineeringCenter of Gravity Calculator
Free Center of Gravity Calculator. Compute 2D center of mass coordinates Xcg = sum(m_i * x_i)/sum(m_i) for structural assemblies.
EngineeringCentrifugal Force Calculator
Free Centrifugal Force Calculator. Compute centrifugal thrust Fc = m * omega^2 * r, experienced G-force, and centrifuge RCF.
EngineeringCentripetal Force Calculator
Calculate centripetal force (F_c = m*v^2 / r) and centripetal acceleration (a_c = v^2 / r = omega^2 * r) for rotating machinery and orbital trajectories.
EngineeringColumn Buckling Calculator
Calculate Euler's critical buckling load (P_cr = pi^2 * E * I / (K*L)^2) and critical buckling stress for slender structural compression columns.
EngineeringCompressive Stress Calculator
compressive stress calculator normal compressive stress from applied load and cross-sectional area. Accurate engineering calculator for compressive stress (sigma_comp = F_comp / A).
EngineeringConcrete Volume Calculator
Free Concrete Volume Calculator. Compute concrete cubic yards, cubic meters, pre-mixed bag quantities, and total weight.
EngineeringConduction Heat Transfer Calculator
conduction heat transfer calculator conductive heat rate Fourier's Law from thermal conductivity, area, temperature difference, and wall thickness. Accurate calculator (Q/t = k*A*dT/d).
EngineeringConvection Heat Transfer Calculator
convection heat transfer calculator Newton's law of cooling heat rate Q from convection coefficient h, area A, and temperature difference. Accurate engineering calculator (Q = h * A * dT).
EngineeringDensity Calculator
density calculator using mass and volume. Accurate materials & engineering calculator for mass density (rho = m/V) & specific gravity.
EngineeringDistance Calculator
distance calculator using speed and time. Calculate total linear distance, kinematic displacement, braking distance, and travel trajectories.
EngineeringElastic Modulus Calculator
elastic modulus calculator Young's modulus from tensile stress and axial strain. Accurate materials & engineering calculator for Young's modulus (E = sigma / epsilon).
EngineeringElectrical Power Calculator
Free Electrical Power Calculator. Compute real power (kW), apparent power (kVA), reactive power (kVAR), and operating current.
EngineeringEnergy Calculator
Calculate kinetic energy (KE = 0.5*m*v^2), gravitational potential energy (PE = m*g*h), and mechanical energy with SI and imperial units.
EngineeringEngineering Unit Converter
engineering unit conversion calculator. Accurate engineering calculator for force, pressure, energy, power, torque & viscosity.
EngineeringFactor of Safety Calculator
Calculate structural design Factor of Safety (FoS = Ultimate Strength / Working Stress or FoS = Yield Strength / Allowable Load) for engineering components.
EngineeringFlexural Modulus Calculator
flexural modulus calculator 3-point bending stiffness from force, span length, specimen width, depth, and mid-span deflection. Accurate engineering calculator (Ef = F*L^3 / 4*b*d^3*delta).
EngineeringFlow Rate Calculator
flow rate calculator volumetric flow rate from cross-sectional area or pipe diameter and fluid velocity. Accurate engineering calculator for flow rate (Q = A * v).
EngineeringFluid Pressure Calculator
Calculate hydrostatic fluid pressure (P = rho * g * h) and absolute total pressure across water, seawater, oil, and mercury at varying submerged depths.
EngineeringForce and Acceleration Calculator
Free Newton's Second Law Calculator. Compute net force F = m * a, acceleration, mass, and equivalent weight.
EngineeringForce Calculator
force calculator using mass and acceleration. Accurate physics & engineering calculator for Newton's 2nd Law (F = m*a).
EngineeringFriction Calculator
Calculate static and kinetic friction force (F_f = mu * N) or determine required normal force and friction coefficient across metric and imperial units.
EngineeringFriction Loss Calculator
Free Friction Loss Calculator. Compute static and kinetic friction force Ff = mu * N, normal force, and thermal power loss.
EngineeringGear Ratio Calculator
Free Gear Ratio Calculator. Computes gear reduction ratios, input/output speeds, mechanical advantage, and torque multiplication.
EngineeringHeat Capacity Calculator
heat capacity calculator heat capacity C from added thermal energy Q and temperature difference deltaT. Accurate engineering calculator for heat capacity (C = Q / dT).
EngineeringHeat Energy Calculator
heat energy calculator sensible heat transfer from mass, specific heat capacity, and temperature difference. Accurate engineering calculator for thermal energy (Q = m * c * dT).
EngineeringHeat Flux Calculator
heat flux calculator thermal energy rate per unit surface area q from heat rate Q and area A. Accurate engineering calculator for heat flux (q = Q / A).
EngineeringHeat Transfer Calculator
Free Heat Transfer Calculator. Compute conductive heat flow Q = (k * A * dT) / d, thermal resistance, and heat flux.
EngineeringHooke's Law Calculator
hooke's law calculator spring force and displacement. Accurate physics & engineering calculator for Hooke's Law (F = k*x).
EngineeringHorsepower Calculator
Accurately calculate mechanical horsepower (HP = (Torque * RPM) / 5252), kilowatts (kW), and metric PS horsepower.
EngineeringHydraulic Cylinder Force Calculator
Calculate extension and retraction hydraulic thrust forces, rod effective area, and fluid requirements accurately.
EngineeringImpulse Calculator
Calculate mechanical impulse (J = F * delta_t = delta_p) and impact collision forces from contact duration and momentum change.
EngineeringKinetic Energy Calculator
Free Kinetic Energy Calculator. Compute translational kinetic energy, equivalent TNT energy, stopping distance, and impact work.
EngineeringLatent Heat Calculator
latent heat calculator phase transformation thermal energy Q from mass and specific latent heat L. Accurate engineering calculator for latent heat (Q = m * L).
EngineeringLinear Expansion Calculator
linear expansion calculator thermal elongation from initial length, expansion coefficient, and temperature change. Accurate engineering calculator for linear expansion (dL = alpha * L0 * dT).
EngineeringMachining Speed and Feed Calculator
Free Speeds and Feeds Calculator. Compute milling & turning RPM = (Vc * 1000)/(pi * D), feed rate, and MRR.
EngineeringMass Calculator
mass calculator from density and volume. Accurate engineering calculator for component mass, volume & material weight.
EngineeringModulus of Elasticity Calculator
modulus of elasticity calculator Young's modulus E from tensile load, gauge length, area, and elongation. Accurate engineering calculator for Young's modulus (E = F*L0 / A0*dL).
EngineeringModulus of Rigidity Calculator
modulus of rigidity calculator shear modulus G from Young's modulus E and Poisson's ratio nu. Accurate engineering calculator for shear modulus (G = E / 2(1 + nu)).
EngineeringMoment of Inertia Calculator
Free Area Moment of Inertia Calculator. Calculate Ix = (b * h^3) / 12, Iy, polar moment J, and elastic section modulus Z.
EngineeringMomentum Calculator
Free Momentum and Impulse Calculator. Calculate linear momentum p = m * v, impulse J = F * dt, and kinetic energy.
EngineeringOhm's Law Calculator
Free Ohm's Law Calculator. Solve electrical circuits for voltage, current, resistance, and dissipated power instantly.
EngineeringOverall Heat Transfer Coefficient Calculator
overall heat transfer coefficient calculator U-factor from inside convection hi, wall conductivity k, thickness d, and outside convection ho. Accurate engineering calculator (U = 1 / (1/hi + d/k + 1/ho)).
EngineeringPipe Flow Calculator
pipe flow calculator fluid velocity and pipe sizing from volumetric flow rate and internal diameter. Accurate engineering calculator for pipe velocity (v = 4Q / pi*D^2).
EngineeringPoisson's Ratio Calculator
poissons ratio calculator Poisson's ratio from transverse and longitudinal strain. Accurate engineering calculator for Poisson's ratio (nu = - epsilon_trans / epsilon_axial).
EngineeringPotential Energy Calculator
Free Potential Energy Calculator. Calculate gravitational potential energy PE = m * g * h and terminal free-fall impact velocity.
EngineeringPower Calculator
Calculate mechanical and electrical power (P = W / t = F * v) with multi-unit conversions across Watts, Kilowatts, Horsepower (HP), and BTU/hr.
EngineeringPressure Calculator
Calculate pressure, force, or surface contact area (P = F / A) with conversion support across Pascals, PSI, bar, atmospheres, and mmHg.
EngineeringPressure Vessel Design Calculator
Free ASME Pressure Vessel Calculator. Compute hoop stress sigma = (P * r) / t, longitudinal stress, and minimum wall thickness.
EngineeringRadiation Heat Transfer Calculator
radiation heat transfer calculator Stefan-Boltzmann net thermal radiation Q from surface emissivity, area, and absolute temperatures. Accurate engineering calculator (Q = epsilon * sigma * A * (T1^4 - T2^4)).
EngineeringRebar Calculator
Free Rebar Calculator. Compute steel reinforcement tonnage, bar counts, grid spacing, and overlap splice allowances.
EngineeringResistor Color Code Calculator
Free Resistor Color Code Calculator. Decode resistor color bands to nominal resistance, tolerance range, and PPM temperature coefficients.
EngineeringRetaining Wall Calculator
Free Retaining Wall Calculator. Calculate active lateral soil thrust Pa = 0.5 * Ka * gamma * H^2 and overturning stability.
EngineeringReynolds Number Calculator
reynolds number calculator flow regime laminar or turbulent from density, velocity, diameter, and dynamic viscosity. Accurate engineering calculator for Reynolds Number (Re = rho*v*D / mu).
EngineeringSecant Modulus Calculator
secant modulus calculator secant stiffness Es from total stress and total strain. Accurate engineering calculator for secant modulus (Es = sigma / epsilon).
EngineeringSensible Heat Calculator
sensible heat calculator sensible heat energy Q from mass, specific heat capacity, and temperature change. Accurate engineering calculator for sensible heat (Q = m * c * dT).
EngineeringShear Modulus Calculator
shear modulus calculator modulus of rigidity from shear stress and shear strain. Accurate engineering calculator for shear rigidity (G = tau / gamma).
EngineeringShear Stress Calculator
Free Shear Stress Calculator. Calculate direct and transverse shear stress tau = V / A for bolts, rivets, pins, and structural joints.
EngineeringSimple Harmonic Motion Calculator
Calculate oscillation period (T), frequency (f), angular frequency (omega), and displacement for mass-spring and simple pendulum systems.
EngineeringSlope Calculator
Free Slope Calculator. Calculate grade percentage, slope angle, rise/run ratios, ADA compliance, and embankment pitch.
EngineeringSpecific Heat Calculator
Free Specific Heat Calculator. Calculate heat energy required to heat or cool materials (Q = m * c * dT) with thermodynamic precision.
EngineeringSpeed Calculator
Calculate average speed, distance covered, or elapsed travel time with instant unit conversions between mph, km/h, m/s, ft/s, and knots.
EngineeringSpring Constant Calculator
Calculate spring stiffness (k = F / x), restoring force (F = -k*x), or spring displacement according to Hooke's Law across N/m, kN/m, and lbf/in.
EngineeringSpring Rate Calculator
Free Helical Spring Rate Calculator. Calculate spring stiffness k = (G * d^4)/(8 * D^3 * Na), deflection, and stored energy.
EngineeringStrain Calculator
Calculate engineering normal strain (epsilon = delta_L / L_0), true logarithmic strain, and percentage elongation across metric and imperial dimensions.
EngineeringStress and Strain Calculator
Calculate engineering stress (sigma = F/A) and strain (epsilon = delta_L / L0) with instantaneous metric and imperial unit conversions.
EngineeringStress Calculator
Calculate normal axial tensile/compressive stress (sigma = F / A) and shear stress (tau = V / A) across Pascals, MPa, GPa, PSI, and KSI.
EngineeringTangent Modulus Calculator
tangent modulus calculator instantaneous non-linear stress-strain slope Et from stress increment and strain increment. Accurate engineering calculator for tangent modulus (Et = d_sigma / d_epsilon).
EngineeringTensile Stress Calculator
tensile stress calculator normal tensile stress from pulling load and cross-sectional area. Accurate engineering calculator for tensile stress (sigma_tens = F_tens / A).
EngineeringThermal Capacity Calculator
thermal capacity calculator total heat storage Cth from system mass and specific heat capacity. Accurate engineering calculator for thermal capacity (Cth = m * c).
EngineeringThermal Conductivity Calculator
thermal conductivity calculator material conductivity from heat rate, thickness, area, and temperature difference. Accurate engineering calculator for thermal conductivity (k = Q*d / A*dT).
EngineeringThermal Expansion Calculator
Free Thermal Expansion Calculator. Calculate linear elongation (dL = alpha * L * dT), volumetric changes, and thermal stress.
EngineeringThermal Resistance Calculator
thermal resistance calculator R-value, U-factor, and thermal resistance from thickness and thermal conductivity. Accurate engineering calculator (R = d / k*A).
EngineeringThermal Stress Calculator
Calculate thermal linear expansion (delta_L = alpha * L_0 * delta_T) and thermal stress in constrained members (sigma = E * alpha * delta_T).
EngineeringTime Calculator
time calculator using distance and speed. Calculate transit time, elapsed duration, speed duration, and acceleration transit.
EngineeringTorque Calculator
Free Torque Calculator. Computes rotational moment, imperial foot-pounds, mechanical horsepower, and angular work.
EngineeringTorsional Stress Calculator
Calculate maximum torsional shear stress (tau = T*r / J = T / Z_p) and angle of twist (theta = T*L / (J*G)) in solid and hollow circular drive shafts.
EngineeringUltimate Tensile Strength Calculator
ultimate tensile strength calculator peak material breaking strength from maximum load and original specimen area. Accurate engineering calculator for UTS (UTS = Fmax / A0).
EngineeringVelocity Calculator
Free Velocity Calculator. Calculate average speed and instantaneous velocity v = d / t across metric, imperial, and nautical units.
EngineeringVoltage Drop Calculator
Free Voltage Drop Calculator compliant with NEC guidelines (under 3% branch circuits, 5% total system).
EngineeringVolume Calculator
volume calculator for engineering 3d shapes. Calculate 3D volume, fluid capacity, and surface area for cylinders, spheres, boxes, and pipes.
EngineeringVolumetric Expansion Calculator
volumetric expansion calculator cubic thermal expansion from initial volume, volumetric coefficient, and temperature change. Accurate engineering calculator for volume expansion (dV = beta * V0 * dT).
EngineeringWeight Calculator
weight calculator from mass. Accurate physics & engineering calculator for gravitational weight force (W = m*g).
EngineeringWork and Power Calculator
Free Work and Power Calculator. Compute mechanical work done W = F * d * cos(theta), power in Watts and Horsepower, and energy.
EngineeringWork Calculator
Calculate mechanical work done by a force acting over a displacement distance (W = F * d * cos(theta)) with SI and imperial energy units.
EngineeringYield Strength Calculator
yield strength calculator material yield stress from yield load and original cross-sectional area. Accurate engineering calculator for yield strength (sigma_y = Fy / A0).
EngineeringYoung's Modulus Calculator
Free Young's Modulus Calculator. Calculate material elastic modulus E = (F * L0)/(A * dL) and axial tensile stiffness.