# How do I calculate the carbon footprint of Kota stone per square metre?

Canonical: https://senseible.earth/answers/kota-stone-carbon-footprint-per-sq-m

Kota stone is quarried and cut, not made, so the footprint is mainly energy: diesel for quarrying and loading, then electricity for cutting and polishing. Divide each by square metres dispatched and add transport to site.

## Quarrying

- Diesel for excavators, loaders and compressors.
- Explosives if used.
- Waste rock handled per square metre.

## Processing

- Cutting machines and edge cutters.
- Polishing, if the stone is sold polished.
- Packing and loading.

## Per square metre

Report per square metre by thickness and finish. Transport to the buyer can be a large share for distant sites.

## Worked example: kota stone unit per sq m (one month)

- Diesel: 6,000 litres x 2.68 = 16,080 kg CO2
- Electricity: 15,000 kWh x 0.710 = 10,650 kg CO2
- Square metres dispatched: 50,000
- Plant total: 26,730 / 50,000 = 0.535 kg CO2 per sq m
- Add transport to site 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](https://senseible.earth/calculators/product-carbon-footprint)
- [Granite slab footprint](https://senseible.earth/answers/granite-slab-carbon-footprint-per-square-metre)
- [Marble slab footprint](https://senseible.earth/answers/marble-slab-carbon-footprint-per-square-metre)
- [Indian sandstone paving footprint](https://senseible.earth/answers/indian-sandstone-paving-carbon-footprint-per-square-metre)
- [Construction industry](https://senseible.earth/industries/construction)

Sources: [GHG Protocol Product Standard](https://ghgprotocol.org/standards), [ISO 14067:2018, Carbon footprint of products (iso.org)](https://www.iso.org), [IPCC 2006 Guidelines, Volume 2 Energy (fuel defaults)](https://www.ipcc-nggip.iges.or.jp/public/2006gl/vol2.html), [CEA CO2 Baseline Database, version 21.0](https://cea.nic.in/cdm-co2-baseline-database/?lang=en)

Last reviewed 2026-10-20.