Calculator category · 15 tools

Engineering calculators

Estimate geometry, electrical quantities, mechanics and chemistry with explicitly labeled units. Verify designs against applicable standards.

Popular engineering tools

EngineeringConcrete CalculatorUse the concrete tool with length, width. See results, the formula and a worked example.EngineeringVoltage Drop CalculatorUse the voltage drop tool with current (a), one-way cable length (m). See results, the formula and a worked example.EngineeringBTU CalculatorUse the btu tool with room length (m), room width (m). See results, the formula and a worked example.

All engineering calculators

EngineeringBTU CalculatorUse the btu tool with room length (m), room width (m). See results, the formula and a worked example.EngineeringConcrete CalculatorUse the concrete tool with length, width. See results, the formula and a worked example.EngineeringDensity CalculatorUse the density tool with mass (kg), volume (m³). See results, the formula and a worked example.EngineeringEngine Horsepower CalculatorUse the engine horsepower tool with vehicle mass (kg), end speed (km/h). See results, the formula and a worked example.EngineeringHorsepower CalculatorUse the horsepower tool with torque (n·m), speed (rpm). See results, the formula and a worked example.EngineeringMass CalculatorUse the mass tool with density (kg/m³), volume (m³). See results, the formula and a worked example.EngineeringMolarity CalculatorUse the molarity tool with solute mass (g), molar mass (g/mol). See results, the formula and a worked example.EngineeringMolecular Weight CalculatorUse the molecular weight tool with chemical formula (case-sensitive). See results, the formula and a worked example.EngineeringOhm's Law CalculatorUse the ohm's law tool with solve for, voltage (v). See results, the formula and a worked example.EngineeringResistor CalculatorUse the resistor tool with resistances (ω). See results, the formula and a worked example.EngineeringRoofing CalculatorUse the roofing tool with building length (m), building width (m). See results, the formula and a worked example.EngineeringSpeed CalculatorUse the speed tool with distance (m), time (s). See results, the formula and a worked example.EngineeringStair CalculatorUse the stair tool with total rise (cm), desired riser (cm). See results, the formula and a worked example.EngineeringVoltage Drop CalculatorUse the voltage drop tool with current (a), one-way cable length (m). See results, the formula and a worked example.EngineeringWeight CalculatorUse the weight tool with mass (kg), gravity (m/s²). See results, the formula and a worked example.

Choosing a engineering calculator

Estimate geometry, electrical quantities, mechanics and chemistry with explicitly labeled units. Verify designs against applicable standards. Start with the tool whose input labels match your problem. Read the formula before interpreting the result; similar calculators can use different periods, units or assumptions.

How can I compare results in this category?

Use matching units and assumptions. Save each calculation summary to compare changes. The related-tool links on calculator pages help you explore another part of the same problem.