Fence wire Calculator: measuring notes and method
Quantity means strands
For four equal strands along a 100 m run, enter 100 m and Quantity four. The net requirement is 400 m before allowance. Gates or interrupted runs should be accounted for explicitly.
Plan terminations and rolls
Check where joins are permitted before dividing by roll length. Keep strainers and other hardware in their own quantities.
Formula
Required length = length per run × runs × (1 + waste ÷ 100). Stock count = required length ÷ stock length, rounded up.
Worked examples in metric and imperial units
Illustrative values match Reset example and stay fixed when you edit the calculator. Both columns describe the same calculation; converted inputs are rounded.
Metric worked example
- Fence run length
- 100 m
- Quantity
- 4
- Wire roll length
- 200 m
- Waste allowance
- 5 %
Wire rolls to buy: 3
Imperial worked example
- Fence run length
- 328.084 ft
- Quantity
- 4
- Wire roll length
- 656.168 ft
- Waste allowance
- 5 %
Wire rolls to buy: 3
Follow the calculation
Lengths in this working are in metres.
- Net required length = 100 × 4 = 400 m.
- Stock count = 400 × 1.05 ÷ 200, rounded up. This assumes usable offcuts.
Reviewed 19 October 2026. How calculations are checked · Report a correction
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