Planning & estimates
Wire length calculator
Total measured cable routes and parallel runs, with an optional length allowance.
Result
Wire lengthReady
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Enter your values and press Calculate result.Formula
Total length = Σ (route length × runs) × (1 + allowance ÷ 100)Within this model
Length take-off from your measured routes. Count each physical cable run once, not the number of cores inside a multicore cable. Add vertical sections and termination lengths to your measurements or allowance. The tool does not infer routes from floor area or select a cable.
What the numbers mean
Multiply each measured route by the number of physical cable runs following it. Add all routes, then apply your chosen percentage allowance to that sum. The allowance is an input, not a recommended procurement margin.
A worked example
Two routes, each 25 m long with two cable runs, total 100 m. A user-selected 10% allowance adds 10 m, for 110 m overall.
Validation, precision and limitations