Weight of Wire Calculator

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Wire Weight Calculator

Calculate the total weight of wire based on material, gauge, and length.

Copper (8.96 g/cm³) Aluminum (2.70 g/cm³) Steel (Carbon) (7.85 g/cm³) Stainless Steel (8.00 g/cm³) Brass (8.50 g/cm³) Zinc (7.14 g/cm³)
Manual Diameter (mm) AWG (American Wire Gauge)
Meters (m) Feet (ft) Kilometers (km)

Calculated Weight:

0.00kg
0.00lbs

Understanding Wire Weight Calculations

Calculating the weight of a wire is essential for logistics, structural engineering, and electrical installations. Whether you are shipping bulk copper spools or calculating the tension on a suspended cable, knowing the precise weight helps in planning and safety.

The Formula for Wire Weight

The weight of a wire is determined by its volume and the density of the material it is made from. Since a wire is essentially a long cylinder, we use the following formula:

Weight = Cross-sectional Area × Length × Density

  • Area: π × (Diameter / 2)²
  • Volume: Area × Length
  • Weight: Volume × Material Density

Common Material Densities

Material Density (g/cm³) Common Uses
Copper 8.96 Electrical wiring, motors, transformers.
Aluminum 2.70 Power transmission lines, lightweight structures.
Steel (Carbon) 7.85 Support wires, guy wires, springs.
Brass 8.50 Decorative elements, musical instruments, fasteners.

What is AWG?

AWG stands for American Wire Gauge. It is a standardized wire gauge system used primarily in North America for the diameters of round, solid, nonferrous, electrically conducting wire. As the AWG number increases, the wire diameter decreases. For example, a 10 AWG wire is much thicker than a 24 AWG wire.

Example Calculation

If you have 100 meters of Copper wire with a 2mm diameter:

  1. Convert diameter to cm: 0.2 cm
  2. Radius = 0.1 cm
  3. Area = π × (0.1)² = 0.0314 cm²
  4. Length = 10000 cm
  5. Volume = 0.0314 × 10000 = 314.16 cm³
  6. Weight = 314.16 × 8.96 = 2,814.8 grams (Approx 2.81 kg)
function calculateWireWeight() { var density = parseFloat(document.getElementById("materialType").value); var method = document.getElementById("inputMethod").value; var length = parseFloat(document.getElementById("wireLength").value); var unit = document.getElementById("lengthUnit").value; var diameterMm = 0; if (method === "manual") { diameterMm = parseFloat(document.getElementById("wireDiameter").value); } else { var awg = parseFloat(document.getElementById("wireAWG").value); if (!isNaN(awg)) { // AWG formula: d_n = 0.127 mm * 92^((36-n)/39) diameterMm = 0.127 * Math.pow(92, (36 – awg) / 39); } } if (isNaN(diameterMm) || isNaN(length) || diameterMm <= 0 || length <= 0) { alert("Please enter valid positive numbers for diameter and length."); return; } // Convert length to centimeters var lengthCm = 0; if (unit === "m") { lengthCm = length * 100; } else if (unit === "ft") { lengthCm = length * 30.48; } else if (unit === "km") { lengthCm = length * 100000; } // Diameter in cm var diameterCm = diameterMm / 10; var radiusCm = diameterCm / 2; // Volume in cm³ var volumeCm3 = Math.PI * Math.pow(radiusCm, 2) * lengthCm; // Weight in grams var weightGrams = volumeCm3 * density; // Results var weightKg = weightGrams / 1000; var weightLbs = weightKg * 2.20462; document.getElementById("weightKg").innerText = weightKg.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 3}); document.getElementById("weightLbs").innerText = weightLbs.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 3}); document.getElementById("resultContainer").style.display = "block"; }

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