Yes, for accurate AC calculations, the power factor (typically 0.8) must be included.

Yes, multiply kW by 1000 to get watts, then apply the formula.

It provides highly accurate results, using standard electrical formulas.

Yes, it works for DC, single-phase, and three-phase AC systems.

Use 0.8 as a common default for general calculations.

For DC: 1000 ÷ 120 = 8.33 Amps.

Yes, higher voltage results in lower current for the same power.

Absolutely, it’s ideal for off-grid, solar, and battery applications.

Yes, it’s responsive and works on all smartphones and devices.

For DC: Amps = Watts ÷ Volts. For AC, you also consider power factor and phase.

Yes, for accurate AC calculations, the power factor (typically 0.8) must be included.

Yes, multiply kW by 1000 to get watts, then apply the formula.

It provides highly accurate results, using standard electrical formulas.

Yes, it works for DC, single-phase, and three-phase AC systems.

Use 0.8 as a common default for general calculations.

For DC: 1000 ÷ 120 = 8.33 Amps.

Yes, higher voltage results in lower current for the same power.

Absolutely, it’s ideal for off-grid, solar, and battery applications.

Yes, it’s responsive and works on all smartphones and devices.

Volts = Watts ÷ Amps (for DC)

For single-phase: Volts = Watts ÷ (Amps × Power Factor)

Use: Volts = Watts ÷ (√3 × Amps × Power Factor)

Most systems use 0.8 as a general assumption.

Yes, it works for DC and both AC systems.

Yes, it's ideal for panels, inverters, and load estimations.

The result is in volts (V).

Yes. Use: Watts = Volts × Amps (× Power Factor if AC).

Use 0.8 for general estimates or consult device specs.

Yes! It’s responsive and optimized for all devices.

Watt-hour is a unit of energy representing power consumption over time.

Multiply watts by the number of hours the device runs.

No, watts measure power; watt-hours measure energy used over time.

Yes, watt-hours apply to all electrical devices.

It helps estimate battery capacity and runtime.

Use Watt-Hours = Watts × Hours.

No, this is theoretical energy use without losses.

Yes, it helps estimate daily or monthly energy output.

Use decimal values, e.g., 0.5 hours for 30 minutes.

Yes, fully responsive on all devices.

A joule is a unit of energy; it equals one watt of power used for one second.

Multiply watts by time in seconds (Joules = Watts × Seconds).

No, watts measure power; joules measure energy.

Watts = energy per unit time; Joules = total energy.

Yes, it helps estimate energy output over time.

Absolutely. It's commonly used in mechanics and thermodynamics.

You’ll need to convert time into seconds first.

The joule (J) is the standard SI unit for energy.

Yes, joules apply to energy, regardless of current type.

Yes, the calculator and layout are fully responsive.

The formula is: kVA = Watts ÷ (1000 × Power Factor).

Power factor adjusts for the phase difference between voltage and current in AC systems.

A typical default value is 0.8 for industrial and commercial loads.

Yes, it works for both, just ensure the correct power factor is used.

kVA stands for kilovolt-amperes, the unit of apparent power.

Yes, if you know the power factor: kVA = kW ÷ Power Factor.

Yes, it’s fully responsive and mobile-friendly.

Yes, it ranges between 0 and 1 in real-world AC circuits.

To size generators or UPS systems, which are often rated in kVA.

Absolutely, it’s 100% free with no signup required.

A kilowatt-hour is a unit of energy equal to using 1000 watts for one hour.

Multiply watts by hours used and divide by 1000. Formula: kWh = (W × H) / 1000.

It helps track energy consumption and estimate electricity bills.

Yes, it's perfect for calculating energy used by TVs, ACs, ovens, etc.

Not exactly. 1 kWh means 1000 watts used continuously for 1 hour.

kW is a unit of power; kWh is a unit of energy (power × time).

Yes, if you enter correct wattage and usage time, it gives precise results.

Yes. Multiply daily kWh usage by the number of days in a month.

Yes, they use fewer watts and thus consume less energy over time.

Absolutely. By knowing usage, you can adjust habits to save energy.

VA stands for volt-ampere, a unit that measures apparent power in an electrical circuit. It’s the product of voltage (V) and current (A).

To convert amps to VA, multiply the current (in amps) by the voltage (in volts). The formula is: VA = Volts × Amps.

Not exactly. VA represents apparent power, while watts represent real power. In purely resistive loads, they can be equal (when power factor = 1).

VA accounts for both real and reactive power in AC systems. It's important for sizing transformers, UPS systems, and power supplies.

Apparent power is the combination of real power (watts) and reactive power (VAR). It’s measured in volt-amperes (VA).

No. Power factor is needed when converting VA to watts. But to get VA from amps, you only need current and voltage.

This calculator is mainly for AC circuits where apparent power is relevant. In DC circuits, watts = volts × amps, with no reactive power.

This calculator is designed for single-phase systems. For 3-phase systems, use the formula: VA = √3 × Volts × Amps.

Enter the voltage used by your equipment or supply source. Common values include 120V, 230V, or 240V depending on your region.

UPS systems are rated in VA. Knowing your total VA requirement helps ensure UPS can handle the full electrical load safely.

Volts = Watts ÷ Amps. For 3-phase, divide by √3 × Amps.

Yes, power in watts is necessary to calculate voltage from current.

AC voltage alternates direction; DC voltage flows in one direction.

Voltage between any two of the three phase conductors.

Yes, the formula Volts = Watts ÷ Amps works for DC as well.

Yes, 3-phase uses √3 in the denominator for line-to-line voltage.

√3 (approx. 1.732) accounts for phase angle differences in 3-phase systems.

It provides accurate results if input values are correct.

Yes, it's lower by a factor of √3 in a balanced 3-phase system.

Yes, you can generate a widget using our embeddable tool.

Watts = Amps × Volts for DC; AC may include a power factor.

Yes, in AC circuits, power factor is crucial to get accurate watt values.

Yes. Three-phase uses √3 × Amps × Volts × PF.

Yes, it supports DC, single-phase, and three-phase systems.

Amps (A) for current and Volts (V) for voltage.

It's the efficiency ratio between real power and apparent power in AC circuits.

To avoid errors and save time on repetitive calculations.

Most household devices use single-phase electricity.

You need to know voltage too; then multiply it by amps.

Yes, it uses standard formulas used in electrical engineering.

kVA stands for kilovolt-ampere, a unit of apparent power.

Multiply amps × voltage × √3 (for 3-phase) or × voltage (for single-phase), then divide by 1000.

kVA = (Amps × Volts) / 1000.

kVA = (√3 × Amps × Volts) / 1000.

√3 accounts for the phase difference between voltages in a 3-phase system.

Yes, it supports both single-phase and 3-phase conversions.

You need to input current (Amps) and voltage (Volts).

Yes, it uses industry-standard electrical formulas.

Apparent power is the product of current and voltage without considering power factor.

No, power factor is not used when calculating apparent power in kVA.

kW = (V × I × PF) / 1000 for single phase.

Power factor (PF) is the ratio of real power to apparent power, typically between 0.8 and 1.

No, power factor is only relevant for AC circuits.

Use kW = (√3 × V × I × PF) / 1000.

Yes, it's based on standard electrical formulas.

Yes, as long as voltage and current are known.

Amps, Volts, Power Factor, and kW.

Yes, unless the load is purely resistive (PF=1).

Yes, by rearranging the formula: Amps = (kW × 1000) / (V × PF).

No, frequency is not considered in basic kW conversion.

VA stands for volt-ampere, a unit of apparent power in an electrical circuit.

Watts = VA × Power Factor.

Power factor is the ratio of real power to apparent power in a circuit, ranging from 0 to 1.

Multiply the VA value by the power factor: Watts = VA × PF.

Only if the power factor is 1, which occurs in purely resistive loads.

VA is apparent power; watts is real power actually used by a device.

Yes, if you account for line voltage and the correct power factor.

Use an estimated PF (e.g., 0.8 for inductive loads) or consult equipment specifications.

It determines how much of the apparent power is converted into usable real power.

Electricity bills are usually based on watts, not VA, unless you're billed for apparent power too.

It is the process of converting volt-amperes (VA) to kilovolt-amperes (kVA) by dividing VA by 1,000.

The formula is: kVA = VA ÷ 1000.

Converting to kVA is useful when dealing with large power ratings in electrical systems.

No, VA is volt-amperes and kVA is kilovolt-amperes. 1 kVA = 1,000 VA.

Yes, the calculator works for both single-phase and three-phase systems.

kW measures real power while kVA measures apparent power.

No, for VA to kVA conversion, power factor is not needed.

2000 VA is equal to 2 kVA.

Yes, generator sizes are often rated in kVA.

Yes, multiply the kVA value by 1,000 to get VA.

Divide the VA value by voltage: Amps = VA ÷ V.

Yes, voltage is required to calculate current.

VA stands for volt-amperes, representing apparent power.

Watts represent real power; VA is apparent power.

No, VA to amps doesn't consider power factor.

Use I = VA ÷ (√3 × V) for line-to-line voltage.

Yes, simply use I = VA ÷ V for DC too.

Current increases, which can overheat wires.

Yes, it's based on standard electrical formulas.

Yes, for sizing generators based on VA rating.

Use the formula: kW = (VA × Power Factor) ÷ 1000.

Power factor is the ratio of real power to apparent power, usually between 0.7 and 1.

Yes, it directly affects the kW result from VA.

VA (volt-ampere) is the unit of apparent power in AC systems.

No, power factor is necessary for accurate conversion.

Use the formula: kW = (VA × PF × √3) ÷ 1000.

kW stands for kilowatt, a unit of real power.

For DC, VA = W, so no PF is needed; divide by 1000 to get kW.

Because VA includes both real and reactive power, not just real power.

Yes, it's accurate and supports both single and three-phase loads.

Multiply volts by amps. For AC, also multiply by the power factor and √3 for 3-phase.

Watts = Volts × Amps.

No, power factor is only used in AC circuits.

It’s a number (0–1) that shows how efficiently electrical power is used in AC circuits.

Use Watts = Volts × Amps × Power Factor.

Use Watts = √3 × Volts × Amps × PF.

Yes, it supports DC, single-phase, and three-phase systems.

√3 ≈ 1.732, used in 3-phase AC power calculations.

Yes, especially for calculating power usage based on voltage and current.

Yes, it's helpful when calculating wattage output based on system voltage and current.

Amps = Watts ÷ Volts.

Yes, you need both watts and volts to calculate amps.

Yes, it's suitable for both DC and single-phase AC circuits.

Yes, for 3-phase: Amps = Watts ÷ (√3 × Volts × PF).

Power factor (PF) is the ratio of real power to apparent power in AC circuits.

No, watts are required for an accurate conversion.

Yes, it helps electricians estimate current values quickly.

It is accurate if you input correct wattage and voltage values.

Yes, you can use it to convert DC voltage and power to current.

Yes, this volts to amps calculator is 100% free.

J = 0.5 × C × V², where C is capacitance in farads and V is voltage in volts.

No, capacitance is required for accurate joules calculation using voltage.

A joule is a unit of energy equal to the work done by one ampere passing through one ohm for one second.

Voltage in volts and capacitance in farads.

Yes, it's commonly used to calculate stored energy in capacitors.

Yes, just convert them to farads: 1μF = 1e-6 F.

It is generally used for DC circuits or peak AC values.

J = 0.5 × 0.01 × 10² = 0.5 Joules.

Yes, it's commonly used for electrical physics problems.

Joules will increase by a factor of four, since energy is proportional to voltage squared.

An electron volt is the energy gained by one electron moving through a potential difference of one volt.

Multiply volts by the elementary charge (1.602×10⁻¹⁹ C).

Yes, it's a linear conversion using the charge of an electron.

Used in physics, electronics, and quantum mechanics.

The charge of one electron: 1.602 × 10⁻¹⁹ coulombs.

No, eV is a unit of energy, not voltage.

Yes, it’s suitable for academic and lab work.

It’s highly accurate using a standard constant value.

Yes, it’s 100% free and easy to use.

Not in basic conversions, but it may in physical experiments.

Use the formula: kW = (V × I × PF) ÷ 1000 for single-phase or include √3 for three-phase.

kW = (√3 × V × I × PF) ÷ 1000.

PF stands for power factor, which represents efficiency.

No, you need both volts and amps to calculate power.

Yes, it supports 3-phase systems with √3 included.

Most systems have a PF between 0.8 and 1.

kW is real power; kVA is apparent power.

Yes, it's accurate for industrial and commercial use.

Yes, specify whether it’s single or three-phase.

Yes, it's completely free and easy to use.

Use the formula: Watts = Watt-hours ÷ Hours.

A watt-hour (Wh) is a unit of energy representing one watt for one hour.

Yes, you need the time (in hours) to convert Wh to W.

Yes, it's commonly used to calculate battery discharge power.

Yes, it helps estimate power from stored solar energy.

Wh is energy, W is power (rate of energy use).

Yes, the basic formula applies universally.

You can measure or estimate how long the device runs.

Yes, it's 100% free and available online.

No, but you can use the inverse formula: Wh = W × h.

Use the formula: mAh = (Wh × 1000) ÷ Voltage (V).

Milliamp-hours (mAh) measure electric charge or battery capacity.

You need watt-hours (Wh) and voltage (V).

Yes, it's commonly used for lithium-ion cells.

Yes, use Wh = (mAh × V) ÷ 1000.

To convert amps to milliamps since 1 A = 1000 mA.

Use 5V unless your device specifies otherwise.

Yes, it's free and accessible online.

Yes, it helps determine battery capacity needed.

The result is in milliamp-hours (mAh).

Use kW = Wh ÷ 1000 ÷ time in hours.

A kilowatt is 1000 watts, a unit of power.

Watt-hours measure the total energy consumed.

Yes, because power (kW) = energy ÷ time.

No, kW is a unit of power, not energy.

Wh is energy, kW is power.

Only if time = 1 hour, otherwise time is required.

Yes, it's completely free and online.

To convert watts to kilowatts.

Used in energy audits, electrical loads, and appliance ratings.

Use the formula V = J ÷ C, where J is energy in joules and C is charge in coulombs.

V = J / C

Coulombs (C)

Yes, it's useful for energy stored in capacitors.

Volt is the unit of electric potential or voltage.

A joule is a unit of energy.

No, charge (C) is required to compute voltage from energy.

Yes, it's a free online tool.

Common in physics, electronics, and engineering.

Joules measure energy; volts measure electric potential.

Use the formula kW = (J ÷ t) ÷ 1000, where J is energy in joules and t is time in seconds.

kW = (J / seconds) / 1000.

Time must be in seconds.

Yes, using time, energy can be converted to power (kW).

Yes, 1 kW = 1000 watts.

Yes, especially in energy and power conversion.

Convert minutes to seconds first (1 minute = 60 seconds).

Kilowatt is a unit of power equal to 1000 watts.

Yes, it’s 100% free.

Used in science, engineering, and power systems.

Use the formula Wh = (mAh × V) ÷ 1000.

Wh = (mAh × Voltage) ÷ 1000.

It stands for milliamp-hours, indicating battery capacity.

Use the battery's rated voltage, usually printed on the label.

Yes, (5000 × 5) ÷ 1000 = 25 Wh.

Yes, completely free to use online.

Yes, just enter the typical 3.6V or 3.7V.

To convert milliamp-hours to amp-hours for the watt-hour equation.

Yes, it helps compare real energy capacity.

In electronics, power banks, and battery sizing.

Multiply kVA by the power factor: kW = kVA × PF.

Power factor is the ratio of real power to apparent power, ranging from 0 to 1.

kW = kVA × Power Factor.

kVA stands for kilovolt-amps and represents apparent power.

Yes, if the load is balanced and PF is known.

It’s usually provided by equipment specs or measured using meters.

Because kW is real power, affected by the power factor.

Yes, it's a 100% free calculator.

Power factor ranges from 0 (worst) to 1 (ideal).

Yes, divide kW by PF: kVA = kW ÷ PF.

Multiply kVA by 1000. VA = kVA × 1000.

VA = kVA × 1000.

VA (Volt-Amps) represents apparent power.

kVA is kilovolt-amps; VA is volt-amps. 1 kVA = 1000 VA.

kVA is used for larger power ratings.

Yes, the formula works for all AC systems.

Yes, by definition.

Yes, divide VA by 1000.

No. VA is apparent power, watts is real power.

Yes, this calculator is 100% free.

Multiply kVA by power factor and 1000: Watts = kVA × PF × 1000.

Ratio of real power to apparent power, between 0 and 1.

Watts = kVA × Power Factor × 1000.

Kilovolt-amps, a measure of apparent power.

Yes, watts is real power, usually less due to PF.

Yes, if PF and kVA are known.

To convert kVA (thousands of VA) to VA units.

Yes, free and easy to use.

Yes, kVA = watts ÷ (PF × 1000).

In electrical load and power system design.

Use the formula: Amps = (kW × 1000) ÷ (V × PF) for single-phase or divide by (√3 × V × PF) for three-phase.

Amps = (kW × 1000) ÷ (Voltage × Power Factor).

Amps = (kW × 1000) ÷ (√3 × Voltage × Power Factor).

It's the ratio of real power to apparent power, usually between 0.8 and 1.0.

Voltage is needed because current depends on both voltage and power.

It is for AC systems — single-phase and three-phase.

Yes, especially when PF is known or assumed.

Very accurate if PF and voltage are correct.

Power in kilowatts (kW), voltage in volts (V), current in amps (A).

Yes, this calculator is 100% free to use online.

A joule is the SI unit of energy, equal to one watt-second.

Multiply kilowatts by 1000 and then by time in seconds: J = kW × 1000 × s.

Energy (J) = Power (kW) × 1000 × Time (s).

To quickly find how much energy is used or produced over time.

Yes, it uses the standard physical formula for energy conversion.

Convert minutes or hours to seconds before using the calculator.

Engineering, physics, energy audits, and electrical design rely on it.

Yes, the calculator is fully responsive and mobile-friendly.

No installation is needed—just use it online for free.

The result is in joules; divide by 1000 for kilojoules.

kVA = kW / Power Factor (PF).

Power Factor is the ratio of real power (kW) to apparent power (kVA).

kW is real power; kVA is apparent power including reactive power.

Yes, kVA is usually higher due to power factor losses.

A power factor of 0.9 or above is considered good.

kVA = kW / (√3 × PF).

Generators are rated in kVA because they supply both real and reactive power.

No, power factor ranges from 0 to 1.

Low power factor results in higher apparent power and inefficiency.

Yes, if the power factor and phase type are correctly applied.

Multiply the power in kilowatts by the time in hours. Formula: kWh = kW × hours.

kW is power (instant rate); kWh is energy (total used over time).

5 × 3 = 15 kWh.

Yes. Enter your panel’s power in kW and the hours of sun exposure.

Yes. You can estimate fuel usage by calculating energy output.

Break the period into intervals and sum each kW × hour segment.

Only if the device runs for 1 hour.

They charge based on kWh consumed.

10 × 0.15 = $1.50.

Yes. Divide kWh by time: kW = kWh ÷ hours.

Multiply kilowatts by 1000, then divide by the power factor. VA = kW × 1000 ÷ PF.

Most residential and commercial loads have a power factor between 0.8 and 1.0.

Yes, unless the power factor is 1, VA is always greater than or equal to kW.

kW is real power; VA is apparent power. VA includes both real and reactive power.

Yes, the conversion depends on the power factor of the load.

Yes, but ensure the total kW and power factor represent all phases.

Lower power factor increases VA, meaning larger equipment is needed.

Use an estimated value like 0.85 for general-purpose calculations.

Yes, generator sizing is based on VA, not just kW.

You may undersize or oversize your system, leading to inefficiency or failure.

Use the formula: V = (kW × 1000) ÷ (I × PF) for single-phase and V = (kW × 1000) ÷ (√3 × I × PF) for three-phase systems.

You need the power in kilowatts (kW), current in amps (A), power factor, and phase type (single or three-phase).

The power factor for most loads ranges from 0.8 to 1.0. Use 0.85 if you're unsure.

No, you need the current (amps) to calculate voltage from kW.

Yes, it supports both single-phase and three-phase voltage calculations.

√3 accounts for the phase shift between currents in a three-phase system, ensuring accurate voltage conversion.

Higher voltage reduces current and losses but must match the equipment rating.

Yes, it's helpful in calculating supply voltage when motor power and current are known.

It will affect accuracy. Use real measurements or a typical value (like 0.9).

No, this calculator is intended for AC systems (single-phase or three-phase).

Wh = kW × 1000 × Hours.

No, kW measures power, Wh measures energy over time.

1 kW for 1 hour equals 1000 Wh.

To measure energy consumption or production over time.

Yes, it's commonly used for sizing solar systems.

2.5 × 1000 × 3 = 7500 Wh.

Yes, it helps estimate battery capacity needed.

Yes, it's completely free and instant.

Input power in kilowatts and time in hours.

1000 Wh = 1 kWh, a common billing unit.

Divide the energy in kilowatt-hours (kWh) by time in hours: kW = kWh ÷ hours.

kW is power (rate), and kWh is energy (total usage over time).

Yes, it's useful for estimating solar panel output or load consumption.

Yes, it uses a standard engineering formula for energy-to-power conversion.

You need to input energy in kWh and time in hours.

Yes, use the reverse formula: kWh = kW × hours.

To determine how much power you used or plan capacity.

Yes, it's ideal for estimating power for appliances over time.

You must estimate or measure the duration of energy use.

Yes, the kWh to kW calculator is completely free.

Ohm's Law states that V = I × R.

A resistor is a component that resists the flow of current.

Voltage is the electric potential difference between two points.

Current is the flow of electric charge through a conductor.

Power is the rate at which electrical energy is consumed or produced.

The unit of resistance is Ohm, symbolized by Ω.

A capacitor is a device that stores electrical energy in an electric field.

An inductor is a component that stores energy in a magnetic field when current flows through it.

AC is alternating current; DC is direct current.

A transformer is a device that changes the voltage of an AC electrical supply.

A kilowatt-hour is a measure of energy equal to using 1,000 watts for 1 hour.

Use the formula: Watts = (kWh × 1000) ÷ Hours.

To find out the power consumption or rating of a device over time.

kWh measures energy, not power.

1 kWh equals 1,000 watt-hours.

You can't convert to watts without knowing the time duration.

Yes, it helps estimate appliance power use.

Watts measure power; kWh measures energy.

Yes, it helps you understand usage and cost breakdowns.

Yes, if the time and kWh are correctly entered.

Power (W) = Energy (J) ÷ Time (s).

Joules measure energy, watts measure power (energy per second).

To find power output or consumption from energy over time.

Energy in joules and time in seconds.

Yes, it helps calculate power usage of devices.

Yes, 1 watt = 1 joule/second.

Division by zero is undefined; time must be greater than zero.

Yes, the formula applies to both types of current.

Yes, multiply power (watts) by time (seconds) to get energy in joules.

Yes, if accurate energy and time values are used.

Amps = (kVA × 1000) ÷ Voltage for single-phase; for three-phase use Amps = (kVA × 1000) ÷ (√3 × Voltage).

Amps = (kVA × 1000) ÷ (√3 × Voltage).

No, power factor is not needed for kVA to amps conversion.

Yes, it provides reliable estimations for electrical load sizing.

No, frequency does not affect the kVA to amps calculation.

Yes, it's commonly used to estimate transformer load currents.

kVA stands for kilovolt-amperes, a unit of apparent power.

kW is real power; kVA includes reactive power and is apparent power.

Yes, kVA = (Amps × Voltage) ÷ 1000.

Yes, it helps calculate current for solar inverters and generators.

An eV is a unit of energy equal to 1.602×10⁻¹⁹ joules.

Use V = eV ÷ charge (in coulombs).

The elementary charge e = 1.602×10⁻¹⁹ coulombs.

Yes, when charge is 1 elementary charge, volts = eV ÷ e.

No, eV is a unit of energy, not voltage.

More charge reduces voltage for the same energy (V = E/Q).

It’s the energy gained by 1 electron across 1 volt.

In physics, electronics, quantum mechanics, and particle science.

Yes, it can indicate energy loss in physics contexts.

It measures energy levels in semiconductors and circuits.