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Free Calculator
Wire Quantity Calculator
Contractors quote coils generously because leftover wire stays with them. Enter your actual point counts and this gives you an independent estimate, including the earth wire that is so often under-ordered.
Frequently asked questions
How many wire coils are needed for a 2BHK house?
Usually 12 to 20 coils of 90m across all sizes for about 70 points, including earth wire. The number depends on your point count, the average run length from the distribution board, and the distance from the meter to the board, which alone can consume a full coil of 6.0 sq mm.
How is house wire quantity calculated?
Count the points on each circuit type, multiply by the average run length and by two conductors for phase and neutral, add earth wire separately, add 10 to 20% for bends, loops and wastage, then divide by the coil length. This calculator does exactly that from your point counts.
Should I buy 90m, 180m or 300m coils?
90m is the standard pack and the easiest to verify, return and account for. If a single size needs four or more coils, 180m or 300m works out cheaper per metre and reduces joint wastage, so it is worth asking for on larger houses.
Why does the calculator ask for the meter to DB distance separately?
Because the mains run from the energy meter to the distribution board uses heavier cable, usually 6.0 or 10.0 sq mm, and is often the single longest run in the house. Estimates that ignore it routinely fall a full coil short of the largest size.
How much extra wire should I order?
Order about 90% of the estimate and top up once the first floor has been pulled. Wire is available next day across Bangalore, and surplus coils tie up money and tend to disappear from site.
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