online electronic calculator - Ohm's law and much more

Diameter ↔ cross section ↔ AWG calculator

Online calculator for formulas used in electronic circuit design and electrical engineering.

Basic electric calculations:

Ohm's Law, Ohm's Law with power, DC power, AC real power, LC resonant frequency, Capacitor charging/discharging, Capacitive reactance, Capacitive current + reactive power, Capacitor energy, Capacitor Δ energy, RC discharging, Inductor square pulse, Inductive reactance, Inductive current + reactive power, Inductor energy, 2 parallel resistors, 3 parallel resistors, System bandwidth, Bandwidth ↔ rise time

Wire and winding calculations:

Diameter ↔ cross section ↔ AWG, Wire resistance, Wire weight, Current density, Wire R thermal drift

Calculate Diameter ↔ cross section ↔ AWG: 1mm, mm2, AWG


Converting wire sizes between diameter (d), cross section area (A) and AWG (American wire gauge). Note that higher AWG number means a thinner wire.     Diameter to area and back:     A=π•d2/4     d=2•√A/π
Diameter in mm to AWG and back:     AWG=-39•log92(d/0.127mm)+36     d=0.127mm•92(36-AWG)/39

Enter 1 value to convert it to the other 2:

Diameter: -0.1 +0.1 -1 +1 -10 +10
Cross section: -0.1 +0.1 -1 +1 -10 +10
AWG: -1 +1 -10 +10

Standard metric enamelled magnet copper wire diameters:

0.018 mm, 0.02 mm, 0.022 mm, 0.025 mm, 0.028 mm, 0.032 mm, 0.036 mm, 0.04 mm, 0.045 mm, 0.05 mm, 0.056 mm, 0.063 mm, 0.071 mm, 0.08 mm, 0.09 mm, 0.1 mm, 0.112 mm, 0.12 mm, 0.125 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.224 mm, 0.25 mm, 0.28 mm, 0.3 mm, 0.315 mm, 0.32 mm, 0.35 mm, 0.355 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.56 mm, 0.6 mm, 0.63 mm, 0.7 mm, 0.71 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 1 mm, 1.1 mm, 1.12 mm, 1.2 mm, 1.25 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.63 mm, 1.7 mm, 1.8 mm, 2 mm, 2.24 mm, 2.5 mm, 2.8 mm, 3.15 mm, 3.55 mm, 4 mm, 4.5 mm, 5 mm,

Standard metric electrical wire cross sections (aluminium or copper):

0.08 mm², 0.14 mm², 0.22 mm², 0.25 mm², 0.34 mm², 0.35 mm², 0.5 mm², 0.75 mm², 0.85 mm², 1 mm², 1.5 mm², 2.5 mm², 4 mm², 6 mm², 8 mm², 10 mm², 16 mm², 25 mm², 35 mm², 50 mm², 70 mm², 95 mm², 120 mm², 150 mm², 185 mm², 240 mm², 300 mm², 400 mm², 500 mm², 630 mm²,

Standard American wire gauge (AWG) wire gauges:

AWG 6/0, AWG 5/0, AWG 0000, AWG 000, AWG 00, AWG 0, AWG 1, AWG 2, AWG 3, AWG 4, AWG 5, AWG 6, AWG 7, AWG 8, AWG 9, AWG 10, AWG 11, AWG 12, AWG 13, AWG 14, AWG 15, AWG 16, AWG 17, AWG 18, AWG 19, AWG 20, AWG 21, AWG 22, AWG 23, AWG 24, AWG 25, AWG 26, AWG 27, AWG 28, AWG 29, AWG 30, AWG 31, AWG 32, AWG 33, AWG 34, AWG 35, AWG 36, AWG 37, AWG 38, AWG 39, AWG 40,

Diameter ↔ cross section ↔ AWG wire size conversion says:

•1 mm (millimeter) diameter wire has a 0.7853981633974 mm² (square millimeters) cross section area and the exact calculated American Wire Gauge value is 18.202 (eighteen point two zero two) AWG.
•The closest standard AWG is 18.



This is a simple online calculator for formulas used in electronic engineering and design.

This online calculator is for reference only. I do not guarantee it to work correctly. You use this at your own risk only.