Electrical Converters
Professional-grade bidirectional conversion tools for solar engineering: Watts, Volts, Amps, kWh, Ah, kVA, Joules, and more.
Power & Current
Fundamental P=V×I relationships for circuit design and wire sizing
Watts, Volts, Amps
P = V × IP = V × I tri-directional converter
Watts → Volts
V = W ÷ ACalculate voltage from power and current
Volts → Watts
W = V × ACalculate power from voltage and current
Watts → Amps
A = W ÷ VDetermine amperage from wattage
Amps → Watts
W = A × VCalculate power from current and voltage
Volts → Amps
A = W ÷ VCurrent from voltage and power
Amps → Volts
V = W ÷ AVoltage from current and power
kW → Amps
A = kW×1000÷VCurrent draw from kilowatts
Amps → kW
kW = A×V÷1000Kilowatts from current and voltage
kW → Volts
V = kW×1000÷AVoltage from kW and amperage
Volts → kW
kW = V×A÷1000Kilowatts from voltage and current
Watts → kW
kW = W ÷ 1000Module watts to system kilowatts
kW → Watts
W = kW × 1000System kW to component watts
Milliamps → Amps
A = mA ÷ 1000Convert mA to A
Amps → Milliamps
mA = A × 1000Convert A to mA
Energy & Storage
Battery capacity, energy production, and storage system conversions
kWh → Watts
W = kWh×1000÷hAverage power from energy consumption
Watts → kWh
kWh = W×h÷1000Energy consumption over time
Ah → Wh
Wh = Ah × VBattery amp-hour to watt-hour
Wh → Ah
Ah = Wh ÷ VWatt-hour to amp-hour capacity
kW → kWh
kWh = kW × hSolar production time estimates
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kWh → kW
kW = kWh ÷ hAverage power from energy data
MWh → kWh
kWh = MWh × 1000Utility-scale energy conversion
kWh → MWh
MWh = kWh ÷ 1000kWh to megawatt-hours
mAh → Wh
Wh = mAh×V÷1000Small battery capacity conversion
Wh → mAh
mAh = Wh×1000÷VWatt-hours to milliamp-hours
mAh → Watts
W = mAh×V÷(h×1000)Battery power output rate
Watts → mAh
mAh = W×h×1000÷VRequired battery mAh capacity
mAh → Ah
Ah = mAh ÷ 1000Milliamp-hours to amp-hours
Ah → mAh
mAh = Ah × 1000Amp-hours to milliamp-hours
Watts → Watt Hours
Wh = W × hPower to energy over time
Watt Hours → Watts
W = Wh ÷ hEnergy to average power
Amp Hours → Amps
A = Ah ÷ hDischarge current from capacity
Amps → Amp Hours
Ah = A × hCapacity from current and time
CCA → Ah
Ah ≈ CCA × 0.7Cold Cranking Amps to Ah estimate
Ah → CCA
CCA ≈ Ah ÷ 0.7Ah to Cold Cranking Amps estimate
kWh → Amps
A = kWh×1000÷(V×h)Current from energy, voltage, time
Amps → kWh
kWh = A×V×h÷1000Energy from current, voltage, time
AC & Apparent Power
Apparent power, reactive loads, and commercial equipment sizing
VA → Watts
W = VA × PFApparent vs real power with PF
Watts → VA
VA = W ÷ PFReal to apparent power
Watts → kVA
kVA = W÷(PF×1000)AC apparent power from real watts
kVA → Watts
W = kVA×PF×1000Real watts from kVA rating
kW → kVA
kVA = kW ÷ PFReal to apparent power for equipment
kVA → kW
kW = kVA × PFApparent to real power
kVA → Amps
A = kVA×1000÷VTransformer current sizing
Amps → kVA
kVA = A×V÷1000kVA from current and voltage
VA → Amps
A = VA ÷ VCurrent from volt-amps
Amps → VA
VA = A × VVolt-amps from current
kVA → VA
VA = kVA × 1000Kilovolt-amps to volt-amps
VA → kVA
kVA = VA ÷ 1000Volt-amps to kilovolt-amps
VA → kW
kW = VA×PF÷1000Volt-amps to kilowatts with PF
kW → VA
VA = kW×1000÷PFKilowatts to volt-amps with PF
kWh → kVA
kVA = kWh÷(h×PF)Size equipment from daily energy
kVA → kWh
kWh = kVA×PF×hEnergy from kVA and runtime
Physics & Energy
Joules, coulombs, and fundamental energy-voltage relationships
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