6 converters · 26 units
Electrical Units
Put a figure in the left-hand box and read the answer on the right. Nothing is submitted anywhere — the maths runs where you are sitting.
Voltage
5 units
1000
1 V = 1000 mV
Current
4 units
1000
1 A = 1000 mA
Resistance
4 units
1000
1 Ω = 1000 mΩ
Capacitance
5 units
1000
1 F = 1000 mF
Electric Charge
4 units
0.2777777778
1 C = 0.2777777778 mAh
Inductance
4 units
1000
1 H = 1000 mH
One prefix ladder, top to bottom
Component datasheets hop between prefixes without warning: a capacitor in picofarads, a supply rail in millivolts, a winding in microhenries, a shunt in milliohms. Each converter here covers the full ladder, so everything can be normalised to one scale before the arithmetic starts.
Charge moves between coulombs and milliamp-hours, which is the quickest way to weigh a battery's rating against the current a circuit actually pulls over a working day.