Electrical Calculators
Cable sizing, voltage drop, household electricity cost, resistor colour codes, transformers and earthing to IS/IEC.
20 calculators
20 results
- House Electricity Cost Calculator PopularEstimate household appliance electricity use, monthly energy cost and yearly bill for US or India rates, including India slab tariffs.Open tool
- Resistor Colour Code Calculator PopularDecode 4-band and 5-band resistor colour codes, encode resistance values and check common resistor colour charts.Open tool
- Cable Sizing Calculator PopularSize AC power cables to IEC 60364: design current, derating for ambient temperature and grouping, ampacity…Open tool
- Voltage Drop Calculator PopularFree voltage drop calculator with NEC and IEC modes: get percent drop, wire size in AWG or mm², power loss…Open tool
- DC Cable Voltage Drop Calculator PopularCalculate DC cable voltage drop from system voltage, current, cable length, conductor material and cable…Open tool
- Transformer Sizing CalculatorSelect a distribution transformer kVA rating from connected load, diversity and future spare capacity, with…Open tool
- Earthing CalculatorCalculate earth electrode resistance, single-rod and multi-rod grounding resistance, the earthing conductor…Open tool
- Conductor Current Carrying Capacity CalculatorCalculate the ampacity of ACSR, AAAC and AAC overhead conductors such as DOG, PANTHER, RABBIT and WEASEL…Open tool
- AWG to sq mm ConverterConvert American Wire Gauge to square millimetres and back — with conductor diameter, exact cross-sectional…Open tool
- Wire Size Calculator (AWG & mm²)Work out the wire size you need for any AC or DC circuit from load, run length and allowable voltage drop —…Open tool
- Wire Gauge Chart (AWG to mm²)Printable AWG to mm² wire gauge chart with conductor diameter, cross-section, resistance per km and typical…Open tool
- 1-Phase / 3-Phase Power CalculatorCalculate electrical power, current, voltage, kW, kVA, kVAR and power factor for single-phase and three-phase…Open tool
- Capacitor kVAR CalculatorCalculate capacitor bank kVAR required for power factor correction, capacitor capacitance, corrected power…Open tool
- MCB Size CalculatorCalculate a suitable preliminary MCB rating from load current, kW, kVA or voltage, with power factor,…Open tool
- Fuse Size CalculatorCalculate a preliminary fuse size for AC or DC circuits from load current, kW, kVA or voltage, with power…Open tool
- kVA, kW and Amps CalculatorConvert kVA to kW, kW to kVA, kVA to amps or amps to kVA for single-phase and three-phase AC systems using…Open tool
- Sq mm Wire Current Capacity ChartCheck the current capacity of 1.5, 2.5, 4, 6 and 10 sq mm copper or aluminium wire with installation,…Open tool
- Motor HP to Amps CalculatorCalculate estimated single-phase or three-phase motor full-load current from horsepower, voltage, efficiency…Open tool
- 100 & 200 Amp Service Wire Size CalculatorFind the NEC reference conductor size for a 100, 125, 150 or 200 amp service, compare copper with aluminium…Open tool
- Watts to Amps CalculatorConvert watts to amps for DC, single-phase AC and three-phase AC supplies. Enter power, voltage and power…Open tool
All electrical calculators A–Z
- 1-Phase / 3-Phase Power Calculator
- 100 & 200 Amp Service Wire Size Calculator
- AWG to sq mm Converter
- Cable Sizing Calculator
- Capacitor kVAR Calculator
- Conductor Current Carrying Capacity Calculator
- DC Cable Voltage Drop Calculator
- Earthing Calculator
- Fuse Size Calculator
- House Electricity Cost Calculator
- kVA, kW and Amps Calculator
- MCB Size Calculator
- Motor HP to Amps Calculator
- Resistor Colour Code Calculator
- Sq mm Wire Current Capacity Chart
- Transformer Sizing Calculator
- Voltage Drop Calculator
- Watts to Amps Calculator
- Wire Gauge Chart (AWG to mm²)
- Wire Size Calculator (AWG & mm²)
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