Wire Calculators In commerce, the sizes of wire are estimated by a device, also called gauges, which consist of plates of circular or oblong form having notches of different widths around their edges to receive wire and sheet metals of different thicknesses. Each notch is stamped with a number, and the wire or sheet, which just fits a given notch, is stated to be of, say, No. 10, 11, 12, etc., of the wire gauge. The circular forms of wire gauge measurement devices are the most popular, and are generally 3¾ in. (95 mm) in diameter, with thirty-six notches; many have the decimal equivalents of the sizes stamped on the back. Oblong plates are similarly notched. Rolling mill gauges are also oblong in form. Many gauges are made with a wedge-like slot into which the wire is thrust; one edge being graduated, the point at which the movement of the wire is arrested gives its size. The graduations are those of standard wire, or in thousandths of an inch. In some cases both edges are graduated differently in order to allow comparison between two systems of measurement. A few gauges are made with holes into which the wire has to be thrust. All gauges are hardened and ground to dimensions. In some applications wire sizes are specified as the cross sectional area of the wire, usually in mm². Advantages of this system include the ability to readily calculate the physical dimensions or weight of wire, ability to take account of non-circular wire, and ease of calculation of electrical properties. Wire Gauge Calculator AWG To mm Calculator SWG To mm Calculator Voltage Drop Calculator cable size calculator wire size calculator voltage drop calculator voltage drop wire gauge calculator wire size cable calculator voltage drop formula electrical cable size wire size chart power cable size calculator cable size electrical wire size wire gauge electrical wire gauge electrical wire size calculator electrical cable size calculator gauge wire electrical cable calculator wire gage calculator copper wire sizes voltage calculator calculate cable size voltage drop calculation formula cable size calculation formula wire gauge amps copper wire gauge electrical wire calculator wire amp chart cable sizing calculation cable loss calculator cable diameter calculator size of wire calculate voltage drop electrical cable size calculation formula sizing electrical wire wire size amps cable size chart wire awg power cable size calculation electrical wire gauge calculator power cable size drop wire gage wire voltage drop calculation for cables power cable calculator wire resistance calculator cable selection calculator calculate wire size cable calculation formula cable capacity calculator formula for voltage drop calculating voltage drop wire gauge sizes gage calculator wire amp calculator sizing wire wire resistance table cable voltage drop calculator cable selection calculation copper cable size calculator wire size calculation formula 3 phase cable size calculator electrical wire size chart cable voltage drop calculation of cable size copper wire size calculator cable size selection chart amps to cable size calculator cable voltage drop calculation what gauge wire for amp wire size gauge cable resistance table voltage drop chart resistance wire calculator cable length calculator voltage loss calculator 3 phase cable size cable calculations formula cable gauge calculator cable sizes calculator size of electrical wire wire voltage drop calculator voltage drop calculator wire size cable voltage drop calculation formula wire load calculator Just input source Voltage, Power/Current, and Distance and Wire Gauge Calculator will calculate the needed wire size in AWG and Circular Mils. Results given for both Copper and Aluminum Wire.