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Cables & fuses calculators

Low-voltage DC wiring needs thick cable and the right fuse. These tools check voltage drop, pick a cable size in mm² or AWG, and match a fuse to the circuit.

DC voltage drop calculatorVoltage lost in a DC cable run, in volts and percent.DC cable size calculatorPick the right 12 V, 24 V or 48 V cable size in mm² or AWG.AWG to mm² converterConvert wire gauge to mm², diameter and resistance, with a full chart.Fuse size calculatorChoose a fuse that suits the load and protects the cable.Wire resistance calculatorResistance of copper or aluminum cable by length, size and temperature.AC voltage drop calculatorVoltage drop on 230 V or 120 V cables, hook-up leads and extension reels.

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