Free Earthing Tool
GI & Copper Earthing Strip Weight Calculator
Use this earthing strip weight calculator as a two-way converter — turn metres into kilograms or kilograms into metres for a GI or copper flat strip, at the exact kg per metre. Pick a standard size or enter a custom width and thickness.
| Weight per metre | — |
|---|
Please read. These figures are general projections, not a design. They are estimates based on published formulae, standard weight data and assumed uniform soil conditions — real sites vary, and the numbers here may not be 100% accurate. They are offered as a working aid only. Global Electric Company accepts no liability for decisions taken on the basis of these results: always have them checked and signed off by your site engineer, electrical consultant or a qualified professional, and confirm earth resistance by measurement on site before commissioning. Where these tools and IS 3043 disagree, IS 3043 wins.
Ready to order the material?
Standard sizes use the Global Electric Company chart — the same figures we invoice against. Custom sizes are computed from theoretical density and will read slightly lower than the chart. For a firm price, send the spec on WhatsApp.
How earthing strip weight is calculated
For standard sizes, this calculator uses the Global Electric Company weight chart (kilograms per metre) — the same weights we quote and invoice from. The total is then:
total length (m) = length per piece × quantity
For a custom or off-chart size, weight per metre is computed from the nominal cross-section: width (mm) × thickness (mm) × density ÷ 1000, using GI = 7.85 g/cm³ and Copper = 8.90 g/cm³ — bare metal, no coating.
Chart vs theory — they are not the same number, and here is why. Our chart is the trade quoting basis, not the physics figure. GI chart values sit about 2% above bare steel because hot-dip galvanising adds zinc (effectively a ~8.0 g/cm³ basis rather than 7.85). Copper chart values are rounded trade figures and also run slightly above theoretical. So the chart will always read a little heavier than the custom calculation for the same size. The chart is what we invoice against; if you need the exact figure for a tender, ask us and we will confirm it in writing.
Earthing strip weight chart (kg per metre)
Standard GI and copper earthing flat-strip weights from our company chart (kg per metre, approx):
| Size (mm) | GI — kg/m | Copper — kg/m |
|---|---|---|
| 25 × 3 | 0.65 | 0.7 |
| 25 × 6 | 1.2 | 1.4 |
| 32 × 6 | 1.55 | 1.8 |
| 40 × 6 | 2.0 | 2.2 |
| 50 × 6 | 2.4 | 2.7 |
| 50 × 10 | 4.0 | 4.5 |
| 60 × 10 | 4.8 | 5.5 |
Weights are the Global Electric Company trade chart (kg/m) — the basis we quote and invoice on. These run slightly above bare-metal theory: GI includes the zinc, copper values are rounded trade figures. For sizes not listed, use the Custom option (theoretical density) or WhatsApp us for the exact figure.