Current density 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
Wire and winding calculations:
Calculate Current density: mm, 4mm2, 10A, A
This can calculate the current density (J) in a wire or conductor knowing its diameter (d) or cross section area (A) and the current (I). It can also calculate the diameter and cross section area knowing the current density and current. You can also calculate the wire current knowing its diameter or cross section area and the current density. Note: the current density field will use the same units of area as the cross section field! A=π•d²/4 d=2•√A/π J=I/A
Enter 2 values to calculate the other 2:
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:
Will be converted to diameter in mmAWG 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,
Current density formula says:
•A 2.256758334191 mm (millimeters) diameter wire has a 4 mm² (square millimeters) cross section area. If the current in such wire is 10A (amperes), the current density is 2.5A/mm².•For 10A (amperes) of current in a wire at 2.5A/mm² current density, the wire diameter has to be 2.256758334191 mm (millimeters) and its cross section area has to be 4 mm² (square millimeters).
•A 2.256758334191 mm (millimeters) diameter / 4 mm² (square millimeters) cross section area wire with at 2.5A/mm² maximum current density can carry at most 10A (amperes) of current.
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.