CalcBeam - calculation report

Engineering Calculators

Engineering looks intimidating until you see that it is mostly a handful of equations applied carefully. This category puts the essential ones within reach: Ohm's law and power relationships for electrical circuits, wire sizing and voltage drop for safe installations, beam bending and deflection for understanding loads and spans, and heat-loss accounting for sizing heating and cooling equipment. Each calculator is a simplified, educational version of professional practice: the physics is real, but the assumptions are stated plainly and the safety factors are yours to add. Use these tools to learn the concepts, to sanity-check quotes from contractors and electricians, and to plan projects intelligently. Anything structural, wired into mains power, or load-bearing needs a licensed professional's review before it gets built.

67 free engineering calculators. Every tool runs instantly in your browser with the formula shown, a worked example, and answers to common questions.

Not sure which one fits? Compare the most-used engineering calculators side by side.

EngineeringBattery Life

Battery Life applies a standard engineering formula in simplified form.

EngineeringBeam Deflection

Beam Deflection applies a standard engineering formula in simplified form.

EngineeringBeam Load

Beam Load applies a standard engineering formula in simplified form.

EngineeringBearing Load

Bearing Load applies a standard engineering formula in simplified form.

EngineeringBelt Length

Belt Length applies a standard engineering formula in simplified form.

EngineeringBolt Torque

Bolt Torque applies a standard engineering formula in simplified form.

EngineeringBreaker Size

Breaker Size applies a standard engineering formula in simplified form.

EngineeringCable Sizing

Cable Sizing applies a standard engineering formula in simplified form.

EngineeringCapacitor

Capacitor applies a standard engineering formula in simplified form.

EngineeringCapacitor Energy

Capacitor Energy applies a standard engineering formula in simplified form.

EngineeringColumn Buckling

Column Buckling applies a standard engineering formula in simplified form.

EngineeringConcrete Mix

Concrete Mix applies a standard engineering formula in simplified form.

EngineeringDuct Size

Duct Size applies a standard engineering formula in simplified form.

EngineeringElectrical Energy

Electrical Energy sizes something in your home: the right appliance, the right amount of material, or the true running cost.

EngineeringEngine Efficiency

Engine Efficiency applies a standard engineering formula in simplified form.

EngineeringFlow Rate

Flow Rate applies a standard engineering formula in simplified form.

EngineeringGear Ratio

Gear Ratio applies a standard engineering formula in simplified form.

EngineeringHead Loss

Head Loss applies a standard engineering formula in simplified form.

EngineeringHeat Exchanger

Heat Exchanger applies a standard physics formula.

EngineeringHorsepower

Horsepower applies a standard engineering formula in simplified form.

EngineeringHVAC Load

HVAC Load sizes something in your home: the right appliance, the right amount of material, or the true running cost.

EngineeringHydraulic

Hydraulic applies a standard engineering formula in simplified form.

EngineeringHydraulic Power

Hydraulic Power applies a standard engineering formula in simplified form.

EngineeringHydraulic Press

Hydraulic Press applies a standard physics formula.

EngineeringImpedance

Impedance applies a standard engineering formula in simplified form.

EngineeringInductor

Inductor applies a standard engineering formula in simplified form.

EngineeringInductor Energy

Inductor Energy applies a standard engineering formula in simplified form.

EngineeringKva Kw

Kva Kw applies a standard engineering formula in simplified form.

EngineeringLed Resistor

Led Resistor applies a standard engineering formula in simplified form.

EngineeringLever

Lever applies a standard engineering formula in simplified form.

EngineeringManning Flow

Manning Flow applies a standard engineering formula in simplified form.

EngineeringNoise Level

Noise Level applies a standard engineering formula in simplified form.

EngineeringOrifice Flow

Orifice Flow applies a standard engineering formula in simplified form.

EngineeringPcb Trace

Pcb Trace applies a standard engineering formula in simplified form.

EngineeringPipe Flow

Pipe Flow applies a standard engineering formula in simplified form.

EngineeringPipe Pressure Loss

Pipe Pressure Loss applies a standard engineering formula in simplified form.

EngineeringPower Factor

Power Factor applies a standard engineering formula in simplified form.

EngineeringPower Factor Correction

Power Factor Correction applies a standard engineering formula in simplified form.

EngineeringPulley

Pulley applies a standard engineering formula in simplified form.

EngineeringPulley Speed

Pulley Speed applies a standard engineering formula in simplified form.

EngineeringPump Power

Pump Power applies a standard engineering formula in simplified form.

EngineeringRadiation Shielding

Radiation Shielding applies a standard engineering formula in simplified form.

EngineeringRc Time Constant

Rc Time Constant applies a standard engineering formula in simplified form.

EngineeringRcf Gforce

Rcf Gforce applies a standard engineering formula in simplified form.

EngineeringResistor Combination

Resistor Combination applies a standard engineering formula in simplified form.

EngineeringResonant Frequency

Resonant Frequency applies a standard engineering formula in simplified form.

EngineeringRpm

Rpm applies a standard engineering formula in simplified form.

EngineeringSection Modulus

Section Modulus applies a standard engineering formula in simplified form.

EngineeringShaft Power

Shaft Power applies a standard engineering formula in simplified form.

EngineeringShaft Torsion

Shaft Torsion applies a standard engineering formula in simplified form.

EngineeringSound Level

Sound Level applies a standard engineering formula in simplified form.

EngineeringSpring Rate

Spring Rate applies a standard physics formula.

EngineeringSteam Consumption

Steam Consumption applies a standard engineering formula in simplified form.

EngineeringSteel Weight

Steel Weight does the quantity math for building and renovation: how much material a job needs.

EngineeringStress Strain

Stress Strain applies a standard engineering formula in simplified form.

EngineeringStructural Load

Structural Load applies a standard engineering formula in simplified form.

EngineeringTank Volume

Tank Volume uses the classic geometry formulas: area measures the surface something covers, volume measures the space it fills.

EngineeringThermal

Thermal applies a standard physics formula.

EngineeringThree Phase Power

Three Phase Power applies a standard engineering formula in simplified form.

EngineeringTorque

Torque applies a standard engineering formula in simplified form.

EngineeringTorque Wrench

Torque Wrench applies a standard engineering formula in simplified form.

EngineeringTransformer Ratio

Transformer Ratio applies a standard engineering formula in simplified form.

EngineeringUps Sizing

Ups Sizing applies a standard engineering formula in simplified form.

EngineeringVentilation CFM

Ventilation CFM sizes something in your home: the right appliance, the right amount of material, or the true running cost.

EngineeringVoltage Drop

Voltage Drop applies a standard engineering formula in simplified form.

EngineeringWind Load

Wind Load applies a standard engineering formula in simplified form.

EngineeringWire Gauge

Wire Gauge applies a standard engineering formula in simplified form.

Last reviewed: 2026-10-06