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SSimpleConvert

Wire & cable calculators

AWG, SWG and voltage drop. 4 tools.

AWG to mmConvert an American Wire Gauge number to a diameter in millimetres and a cross-section in mm², using the exact defining formula.SWG to mmConvert a British Standard Wire Gauge number to millimetres and mm², using the official SWG table rather than a formula.Voltage Drop CalculatorCalculate the voltage lost in a cable run from its gauge, length and current — and check it against the usual 3 % limit.Wire gauge chartFull AWG reference table: diameter in millimetres and inches, cross-section in mm², copper resistance per kilometre, and the SWG equivalent.