Kind of dumb fence question :)

Measure the diameter of each coil in inches, add them up, multiply by 3.14, and divide by 12. This will come out pretty close to length in feet.

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Libertarindependent

I think if you measure the diameter of the middle coil, multiply that by 3.14 and then multiply that number by the number of coils it will be close enough.

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It comes in 100' and 330' rolls. OP's picture looks like 100' rolls.