Converters

Electrical converters

15 tools

Capacity, current scale, energy/time, and dB. Power and Ohm’s-law tools are under Electrical calculators.

Ah to mAh conversion Convert ampere-hours (Ah) to milliampere-hours (mAh). Free online tool — no sign-up. Clear formulas and worked examples. Runs locally in your browser.
Amps to Milliamps conversion Amps to Milliamps conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Fast and free.
Decibel (dB) conversion Convert power and amplitude ratios to decibels. Power: dB = 10·log₁₀(P₂/P₁). Amplitude/voltage: dB = 20·log₁₀(V₂/V₁). Runs locally in your browser.
Joules to Kilowatts conversion Convert joules (J) to kilowatts (kW). Power needs time: kW = J ÷ (s × 1000). Formula, steps, and examples. Runs locally in your browser. Try it free.
Kilojoules to Kilowatts conversion Kilojoules to Kilowatts conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Kilojoules to Watts conversion Kilojoules to Watts conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Kilowatts to Joules conversion Kilowatts to Joules conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Kilowatts to Kilojoules conversion Kilowatts to Kilojoules conversion. Exact conversion factors, worked examples, and privacy-first browser calculation on CalculatorX. Try it free.
Kilowatts to Watt-hours conversion Convert kilowatts (kW) to watt-hours (Wh). Formula Wh = kW × h × 1000, battery and appliance examples, and a chart. Runs locally in your browser.
Milliamp-hours to Amp-hours conversion Convert milliamp-hours (mAh) to amp-hours (Ah). Exact factor: 1 Ah = 1000 mAh. Formula, battery examples, and a chart. Runs locally in your browser.
Milliamps to Amps conversion Convert milliamps (mA) to amps (A). Exact factor: 1 A = 1000 mA. Formula A = mA ÷ 1000, examples, and a conversion chart. Runs locally in your browser.
Watt-hours to Kilowatts conversion Convert watt-hours (Wh) to kilowatts (kW). Formula kW = Wh ÷ (h × 1000). Average-power examples and a chart. Runs locally in your browser. Try it free.
Watt-hours to Watts conversion Convert watt-hours (Wh) to watts (W). Formula W = Wh ÷ hours. Average power examples for batteries and loads. Runs locally in your browser. Try it free.
Watts to Kilojoules conversion Convert watts (W) to kilojoules (kJ). Formula E(kJ) = P(W) × t(s) ÷ 1000. Examples for seconds, minutes, and hours. Runs locally in your browser.
Watts to Watt-hours conversion Convert watts (W) to watt-hours (Wh). Formula Wh = W × hours. Battery and device runtime examples plus a chart. Runs locally in your browser. Try it free.