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 Calculate average power in kW from energy in J and an explicit duration in seconds. Runs locally in your browser.
- Kilojoules to Kilowatts conversion Calculate average power in kW from energy in kJ and an explicit duration in seconds. Runs locally in your browser.
- Kilojoules to Watts conversion Calculate average power in W from energy in kJ and an explicit duration in seconds. Runs locally in your browser.
- Kilowatts to Joules conversion Calculate energy in J from average power in kW and an explicit duration in seconds. Runs locally in your browser.
- Kilowatts to Kilojoules conversion Calculate energy in kJ from average power in kW and an explicit duration in seconds. Runs locally in your browser.
- Kilowatts to Watt-hours conversion Calculate energy in Wh from average power in kW and an explicit duration in hours. 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 Calculate average power in kW from energy in Wh and an explicit duration in hours. Runs locally in your browser.
- Watt-hours to Watts conversion Calculate average power in W from energy in Wh and an explicit duration in hours. Runs locally in your browser.
- Watts to Kilojoules conversion Calculate energy in kJ from average power in W and an explicit duration in seconds. Runs locally in your browser.
- Watts to Watt-hours conversion Calculate energy in Wh from average power in W and an explicit duration in hours. Runs locally in your browser.