American Wire Gauge, or AWG, is the standard system for sizing electrical wire in North America, where a smaller number means a thicker wire. This calculator converts a gauge number into the wire diameter and cross sectional area in both metric and imperial units, using the exact geometric definition where the diameter equals 0.005 inch times 92 raised to the power of 36 minus the gauge, over 39. It also works the other way, letting you enter a diameter to find the closest gauge. Knowing the area matters because it sets how much current a wire can safely carry and how much resistance it adds over a run. Enter an AWG number from a thick 4 gauge feeder down to a thin 30 gauge signal wire and read the dimensions instantly. Everything runs locally in your browser.
American Wire Gauge, or AWG, is the standard system for sizing electrical wire in North America, where a smaller number means a thicker wire. This calculator converts a gauge number into the wire diameter and cross sectional area in both metric and imperial units, using the exact geometric definition where the diameter equals 0.
Yes. Wire Gauge AWG Calculator is completely free, with no sign-up and no usage limits.
Yes. Wire Gauge AWG Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Wire Gauge AWG Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.