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Carbon Calculator

Carbon Footprint (SME Quick Estimate) for UK & EU businesses. No sign-in required to view results.

Carbon Footprint – SME Quick Estimate

Fast estimate in minutes using simplified inputs (UK & EU).

Disclaimer · Carbon Footprint (SME Quick Estimate). Not ISO-certified or third-party verified. Results depend on your inputs and published conversion factors.

What’s included in this quick estimate?
Scope 1 (direct emissions): on-site gas and company vehicle mileage (simplified average factor).
Scope 2 (indirect electricity): electricity usage using location-based grid factors (country selection).
Flights: simplified estimates by flight type (short/medium/long haul).
Enterprise Advanced adds: multi-site input, supplier electricity, evidence, audit notes (rolling out).

Setup

Reporting year + optional notes.

Used for grid electricity factors.

Electricity (Scope 2)

Annual electricity usage (kWh)

Factor: 0.19 kgCO₂e/kWh
Estimated emissions
0 tCO₂e

On-site gas (Scope 1)

Annual natural gas usage (kWh)

Factor: 0.18 kgCO₂e/kWh
Estimated emissions
0 tCO₂e

Company vehicles (basic)

Total miles per year

Factor: 0.25 kgCO₂e/mile
Estimated emissions
0 tCO₂e

Flights (basic)

Annual counts

Estimated emissions (all flights)
0 tCO₂e

Summary

Live totals update as you type.

Total (tCO₂e / year)
0 tCO₂e
0 kgCO₂e/year
  • Electricity 0 tCO₂e · 0%
  • Gas 0 tCO₂e · 0%
  • Vehicles 0 tCO₂e · 0%
  • Flights 0 tCO₂e · 0%
Method
Location-based electricity factors • Quick estimate
Factors version: baseline-v1

Save & track your footprint

Create an account to keep your results and monitor progress.

How we calculate your estimate

Transparent methodology, units, and limitations (quick estimate).

1) We collect activity data

You enter annual usage such as electricity (kWh), gas (kWh), vehicle distance (miles/km), and flight activity. The calculator uses your inputs only to compute a result.

2) We apply standard emission factors

For each category we multiply your activity data by a published emission factor (for example, kgCO₂e per kWh or per km). This produces an estimate in kgCO₂e.

Emissions (kgCO₂e) = Activity × Emission factor

Total (tCO₂e/year) = Σ category emissions ÷ 1000

3) We show totals and breakdown

We convert kgCO₂e to tonnes (tCO₂e) and sum categories to show your total footprint. Category percentages are calculated as each category’s share of the total.

What “CO₂e” means

CO₂e stands for “carbon dioxide equivalent” — a standard way to express different greenhouse gases in one comparable unit.

Important limitations

  • This is a guidance estimate — not an ISO certification, audit, or verified emissions report.
  • We use average factors; results may differ from supplier-specific or market-based reporting.
  • This tool is for quick understanding and early planning, not formal Scope 1–3 accounting.

Sources

Emission factors are based on recognised UK/EU public datasets (e.g., government / official baseline factors). If you need the exact factors used for your account/reporting period, contact support.