How many meters in one ton of 0.5 mm GI coil?

At 1000 mm width: 255 meters per ton. At 1219 mm width: 209 meters per ton. Formula: meters/ton = 1000 ÷ (7.85 × thickness × width in meters).

How many roofing sheets does one ton of GI coil make?

Depends on sheet length. Example: 0.5 mm × 1219 mm coil cut into 2.44 m sheets gives about 85 sheets per ton (209 m ÷ 2.44 m).

Is GI coil sold by theoretical or actual weight?

Both exist. Theoretical weight is calculated from dimensions (standard in quotes); actual weight is what the weighbridge shows. The difference is typically 0.5–1% — confirm the invoicing basis before ordering.

GI Coil: How Many Meters Per Ton? Chart + Formula (0.3–2.0 mm)

Quick Answer

One ton of GI coil gives roughly 424 running meters at 0.3 mm × 1000 mm width, or 52 meters at 2.0 mm × 1219 mm. Formula: meters per ton = 1000 ÷ (7.85 × thickness mm × width m). Tables below for widths 1000 mm and 1219 mm — the two most ordered.

Roofing and ducting buyers think in meters and sheets; coils are sold by weight. Converting between the two is the most common calculation in the GI trade — and the source of most quantity disputes. Here is the formula and the ready tables we use in our own quotations.

The Formula

Meters per ton = 1000 ÷ (7.85 × thickness in mm × width in meters)

Steel weighs 7.85 kg per mm of thickness per square meter; the zinc coating adds only ~0.3–0.5%, which we ignore for planning (coils are invoiced on theoretical weight including coating, or actual weighed weight — confirm which with your supplier).

Meters per Ton — Width 1000 mm

Thickness (mm)	kg per meter	Meters per ton
0.3	2.36	424
0.4	3.14	318
0.5	3.93	255
0.6	4.71	212
0.8	6.28	159
1.0	7.85	127
1.2	9.42	106
1.5	11.78	85
2.0	15.70	64

Meters per Ton — Width 1219 mm (48")

Thickness (mm)	kg per meter	Meters per ton
0.4	3.83	261
0.5	4.79	209
0.6	5.74	174
0.8	7.66	131
1.0	9.57	104
1.2	11.48	87
1.5	14.35	70
2.0	19.14	52

Sheets per Ton — Worked Example

Ribbed roofing sheets are typically cut at 2.44 m from 0.5 mm × 1219 mm coil. One ton gives 209 m ÷ 2.44 m ≈ 85 sheets. A 20-ton container ≈ 1,700 sheets — enough for roughly 1,200 m² of roof (with overlap).

Three Pitfalls When Ordering by Meters

Nominal vs minimum thickness: "0.5 mm" coils can be ordered as full 0.5 or with a 0.02–0.05 mm tolerance deduction. The meters-per-ton math changes accordingly — always ask which basis the price uses.
Zinc weight: Z275 coating barely changes weight, but going to Z350+ or GL aluzinc shifts it slightly — the calculator above stays valid for planning.
Invoicing basis: theoretical weight (calculated) vs actual weighed weight differs by 0.5–1% on coils. Our quotations state the basis explicitly.

Calculate any width/thickness yourself with the GI coil weight calculator — or send us your roofing profile and we will compute the coil plan: GI coil product range → · Z275 coating guide →

Send meters, get tons — priced the same day

Tell us thickness × width × total meters (or sheet count) at [email protected] or WhatsApp +86 191 5745 8011 — we return tonnage, coil plan and FOB/CIF price. MOQ 5 tons.

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