The standard formula is:

Standard formula:

Weight (kg) = Thickness (mm) × Width (mm) × Length (m) × 7.85 ÷ 1000

For tons:

Weight (tons) = Thickness × Width × Length × 7.85 ÷ 1,000,000

In practice, coil weight is usually confirmed by the mill, but buyers use this formula to estimate order quantities and container capacity.

For practical use:

• Weight (tons) = Thickness × Width × Length × 7.85 ÷ 1,000,000

This simplified version is commonly used by steel suppliers and buyers.

Example:

• Thickness: 1.0 mm

• Width: 1000 mm
• Length: 2000 m

Weight = 1 × 1000 × 2000 × 7.85 ÷ 1,000,000

= 15.7 tons

This falls within standard coil weight ranges for export shipments.

Steel coils are often supplied by:

• Weight (tons)
• Length (meters)

Understanding the relationship between length and weight is critical when ordering steel coils for projects.

Export coils are typically optimised for container loading, usually between 20–26 tons per coil for 20FT containers. Most steel coils fall within:

• 3 – 8 tons (small coils)
• 10 – 30 tons (standard coils)

Actual coil weight depends on mill production and order specifications.

Coil weight depends on:

• Thickness
• Width
• Length
• Steel density

Different steel types such as cold rolled steel coils and hot rolled coils may have different dimensions.

Coil weight directly affects shipping:

• 20FT container → approx. 25–27 tons
• Coil distribution matters
• Safety during transport

Understanding loading limits is important — see our minimum order quantity guide.

Steel prices are usually quoted per ton.

Accurate weight calculation helps buyers estimate total cost — see our steel prices explained guide.

Before ordering:

• Coil weight (per coil)

• Total tonnage
• Dimensions (thickness, width)
• Packaging type
• Mill test certificates (EN 10204 3.1)

Buyers should always confirm specifications and documentation such as steel mill test certificates (EN 10204 3.1).

CoreMet Steel supplies steel coils with precise weight specifications for global buyers.

We support procurement teams with:

• Accurate coil weight calculations
• Full container supply (20–26 MT)
• Custom dimensions (thickness & width)
• Export-ready documentation (EN 10204 3.1)

Contact CoreMet Steel today to receive a quotation based on your required specifications.

Guidance on inspection documents and certification standards is provided by organisations such as the British Standards Institution (BSI), which oversees the adoption of EN standards in the UK.

From steel coils to fencing systems: sourcing quality materials for global buyers, projects, and distributors.