How do I calculate the carbon footprint of a leather belt?

Take the leather area per belt, including cutting waste, and multiply by your tannery's per-square-foot figure. Add the buckle by metal weight, edge paint, stitching and packing, then divide the unit's electricity by belts passed.

Materials

• Finished leather per belt from strap length and width, plus cutting waste.
• Buckle and keeper: zinc alloy, brass or steel by weight.
• Edge paint, glue and thread.

Making

• Strap cutting, skiving, creasing and stitching machines.
• Edge painting and drying.
• Boxes, sleeves and cartons.

Per piece

Leather is usually most of the total, so the tannery's figure matters most. Report per belt by width and length.

Worked example: belt unit per piece (one month)

• Electricity: 8,000 kWh x 0.710 = 5,680 kg CO2
• Belts passed: 25,000
• Plant total: 5,680 / 25,000 = 0.227 kg CO2 per belt
• Add leather and buckles for the full figure

Inputs are illustrative; use your own bills and production records.

What Senseible does here

Senseible reads the plant's electricity bills (CEA grid factor 0.710 kg CO2 per kWh, CO2 Baseline Database version 21.0) and fuel invoices (IPCC 2006 defaults) into a fingerprinted Scope 1 and 2 record, the plant-level input to a per-unit figure. Bought-in materials go to the supplier evidence trail; product reports are self-declared drafts.

• Product carbon footprint calculator
• Leather tannery footprint per sq ft
• Leather bag footprint per piece

Sources: GHG Protocol Product Standard, ISO 14067:2018, Carbon footprint of products (iso.org), IPCC 2006 Guidelines, Volume 2 Energy (fuel defaults), CEA CO2 Baseline Database, version 21.0

Last reviewed 2026-10-20.