Power & Energy Calculators

Voltage Regulation Calculator

Easily calculate voltage regulation for transformers, alternators, or power supplies. Determine output voltage variation under load and no-load conditions.

Phase to Voltage Calculator

Instantly convert between line and phase voltages in 3-phase systems. Find phase-to-line or line-to-phase voltage values for star (Y) or delta (Δ) connections.

3 Phase Current Calculator

Easily calculate 3-phase current using power (kW), voltage (V), and power factor (PF). Ideal for engineers, electricians, and students.

Water Horsepower (WHP) Calculator

Calculate water horsepower (WHP) easily using flow rate and head. Find the true hydraulic power needed to move water efficiently in pumps and irrigation systems.

Power Factor Calculator

Calculate your power factor instantly. Analyze real, reactive, and apparent power to enhance efficiency, reduce losses, and avoid utility penalties.

Water Wheel Power Calculator

Calculate the power generated by a water wheel using flow rate, head, and efficiency. Ideal for engineers, students, and small-scale hydro projects.

Capacitor Power Calculator

Calculate the capacitor reactive power in AC circuits using voltage and capacitance. Ideal for engineers, technicians, and students designing reactive power systems.

Single Phase Power Calculator

Calculate single-phase AC power using voltage, current, and power factor. Ideal for electricians, engineers, and students for accurate energy analysis.

Hydro Power Calculator

Calculate hydroelectric power output from water flow rate, head, and turbine efficiency. Ideal for engineers, students, and renewable energy planners.

True Power Calculator

Calculate true power in AC circuits using voltage, current, and power factor. Ideal for engineers, electricians, and students analyzing real power consumption.

Output Power Calculator

Calculate the output power of electrical or mechanical systems using voltage, current, or torque and speed. Ideal for engineers, technicians, and system designers.

Pulsed Laser Average Power Calculator

Calculate the average power of a pulsed laser using pulse energy and repetition rate. Useful for laser design, experiments, and optical system analysis.

Apparent Power Calculator

Calculate apparent power (VA) in AC circuits using voltage and current. Ideal for engineers, electricians, and students for power system analysis.

Power Loss Calculator

Calculate electrical power loss using I²R and efficiency formulas. Simple tool with tables, examples, and FAQs for engineers and students.

Capacitor Bank Calculator

Calculate the required capacitor bank kVAR to correct the power factor. Enter load kW, initial PF, and desired PF for accurate capacitor sizing.

Watts to btu per hours calculator

Convert watts (W) to BTU per hour (BTU/h) easily. 1 W = 3.412141633 BTU/h. Perfect for HVAC, heating, and cooling capacity conversions.

Btu per hour to watts calculator

Convert BTU per hour (Btu/h) to watts (W) and vice versa. 1 Btu/h = 0.29307107 W for heating, cooling, and HVAC power ratings.

BHP to kilowatts calculator

Convert brake horsepower (bhp) to kilowatts (kW) and back. Uses 1 bhp = 0.7457 kW for precise motor and engine power conversions.

kw to refrigeration tons conversion

Convert kilowatts (kW) to refrigeration tons (TR) using TR = kW ÷ 3.517. Includes reverse TR to kW formula, tables, and HVAC cooling capacity guide.

Refrigeration tons to kilowatts conversion

Convert refrigeration tons (TR) to kilowatts (kW) instantly. Uses 1 TR = 3.517 kW formula. Includes reverse conversion from kW to TR for HVAC and cooling systems.

Horsepower to kw calculator

Convert horsepower (HP, PS/bhp) to kilowatts (kW) and back. Supports mechanical HP, metric horsepower, and electrical HP with precise, engineering-grade formulas.

kw to current calculator

Calculate current from kilowatts (KW), voltage, and power factor for AC or DC systems accurately.

Ripple current calculator

Estimate capacitor ripple voltage and ripple (AC) current for rectifiers and switching converters. Enter load, frequency, C, and topology to get ΔVₚₚ and Iᵣ(rms).

power to current calculator

Convert electrical power (W) to current (A) for DC, single-phase AC, and three-phase AC. Enter power, voltage, and power factor to get accurate RMS or DC current.

current to energy calculator

Convert electrical current (A) to energy (Wh or kWh) using 𝐸 = 𝐼×𝑉×t, where I is current, V is voltage, and t is time.

power factor to voltage calculator

Convert power factor, power, and current to voltage using V= P/(I*PF) Useful for AC circuit analysis and electrical load calculations.