Engineering Calculators

Calculate voltage, current, resistance, and power from Ohm's law relationships.

Calculate electrical power from voltage and current.

Calculate mechanical stress from force and cross-sectional area.

Calculate strain from change in length and original length.

Calculate volumetric flow rate from area and velocity.

Compare, simplify, scale, and distribute values for advanced gear ratio.

Compare, simplify, scale, and distribute values for torque ratio.

Compare, simplify, scale, and distribute values for pulley ratio.

Compare, simplify, scale, and distribute values for speed ratio.

Calculate Young's modulus from stress and strain.

Estimate center deflection of a simply supported beam with central load.

Calculate spring force, spring rate, and stored energy.

Estimate equivalent bearing load from radial and axial loads.

Estimate voltage drop over cable length from current and conductor resistance.

Estimate required cable area from current, allowable density, and safety factor.

Calculate power factor from real power and apparent power.

Calculate transformer secondary voltage, current, and turns ratio.

Estimate battery runtime from capacity, voltage, load, efficiency, and depth of discharge.

Estimate solar panel count from energy use, sun hours, panel wattage, and system losses.

Estimate inverter size from continuous load, surge load, and safety factor.

Calculate electrical load from voltage, current, power factor, and quantity.

Estimate cooling BTU need from room area, height, occupants, and sunlight factor.

Convert cooling BTU load into AC tonnage.

Estimate heat load from area, heat gain factor, occupants, and equipment.

Calculate ventilation airflow from room volume and air changes per hour.

Estimate round duct diameter from airflow and target air velocity.

Calculate engine compression ratio from swept volume and clearance volume.

Calculate rate, percentage, and ratio values for power-to-weight ratio.

Calculate voltage, current, resistance, and power from Ohm's law relationships.

Calculate force, mass, or acceleration using Newton's second law.

Calculate kinetic energy from mass and velocity.

Calculate momentum from mass and velocity.

Calculate density from mass and volume.

Calculate pressure from force and area.

Calculate torque from force and lever arm distance.