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Wire Parameter Calculator September 20, 2007

This Javascript web calculator will calculate the resistance and ampacity for copper wire based on the gauge. Both metric (mm) and American Wire Gauge (AWG) are supported. Note: Ampacity is based on a curve fit to MIL-STD-975. To see the wire table that this calculator is based on as well as important information about wire insulation temperature ratings, click here.



Wire Size

Optional Inputs:

Wire Temperature Deg. 
Wire Length
Number of Wires in Bundle

Results (per each wire):

Resistance Ohms
Single Wire Ampacity Amps
Wire Bundle Ampacity (per wire) Amps
Copper Diameter
Copper Area
Copper Weight