Is this calculator compliant with the GHG Protocol Corporate Standard?

It uses the same three-scope structure and location-based Scope 2 method that the GHG Protocol prescribes. For a formal disclosure under CSRD, VSME or SBTi you still need metered activity data, a defined organisational boundary and - for Scope 2 - a dual reporting of market-based factors. Treat the output as directional planning, not audit evidence.

Which grid factors should I choose - location-based or market-based?

This tool shows location-based factors (the grid average where the electricity was consumed). If you have Guarantees of Origin, PPAs or a green tariff, calculate the market-based number separately using the supplier's residual mix - the GHG Protocol requires both to be reported.

Why is my Scope 3 spend-based number so large?

The 0.35 kg / EUR factor is an EEIO screening average across all sectors. It over-estimates low-carbon services and under-estimates heavy industry. Use it to spot which spend categories dominate, then replace those categories with supplier-specific or product-specific factors before publishing.

Can I include refrigerants, fugitive emissions or company-owned vehicles?

Refrigerant leakage (Scope 1) and company-owned vehicles are on the roadmap for the next iteration. For now, estimate refrigerants separately using GWP × kg refrigerant charged and add to Scope 1.

Is my data saved anywhere?

No. Every value stays in your browser's local storage. Nothing is uploaded, shared or read by us.

Which reporting frameworks map to which scopes?

CSRD / ESRS E1 requires all three scopes disclosed separately. VSME Basic Module requires Scope 1 and Scope 2 (location-based). SBTi near-term targets require Scope 1+2 always, and Scope 3 if it is more than 40% of total. CBAM is a separate embedded-emissions regime - use our CBAM tool for that.

How often are the emission factors updated?

DEFRA publishes annually (typically June). EEA grid factors publish annually. This tool is updated within 30 days of a new release - the methodology block shows the version in use.

Can I export the report for my auditor?

Yes. "Save as PDF" produces a print-formatted report showing every activity, factor and result. "Download CSV" gives you the raw data for further processing in Excel or a reporting platform.

GHG Protocol · Free · No signup

GHG emissions calculator — Scope 1, 2 & 3

Estimate your organisation's annual footprint across all three scopes using GHG Protocol methodology and country-specific 2024 grid factors. Export as PDF or CSV.

Current revision 1 July 2026

Reporting year

Country / grid

Natural gas (kWh / yr)

Diesel - fleet, generators (L / yr)

Petrol (L / yr)

LPG (kg / yr)

Total footprint 2026 EU-27 average

216.4

tCO₂e / yr

Breakdown by scope

01Scope 1 · Direct combustion27.1 t · 13%

02Scope 2 · Purchased energy30.4 t · 14%

03Scope 3 · Value chain159 t · 73%

Scope	Activity	Value	Unit	tCO₂e
1	Natural gas (kWh / yr)	80,000	kWh	14.72
1	Diesel - fleet, generators (L / yr)	4,000	L	10.04
1	Petrol (L / yr)	1,000	L	2.31
1	LPG (kg / yr)	0	kg	0.00
2	Grid electricity (kWh / yr)	120,000	kWh	30.36
3	Business travel by car (km / yr)	25,000	km	4.25
3	Short-haul flights (km / yr, <3700 km)	15,000	km	3.69
3	Long-haul flights (km / yr, ≥3700 km)	0	km	0.00
3	Employee commuting (km / yr, total)	60,000	km	8.40
3	Purchased goods & services (€ / yr)	400,000	EUR	140.00
3	Waste to landfill (kg / yr)	5,000	kg	2.33
3	Water supply (m³ / yr)	800	m³	0.28
Total footprint				216.38

Factors: DEFRA 2024 (Scope 1 & 3), national inventories via EEA 2023 (Scope 2 grid). Indicative estimate for planning and screening only. Replace with metered activity data and audited factors before reporting under CSRD, VSME or SBTi.

How the numbers are calculated

Every activity is multiplied by a peer-reviewed 2024 emission factor and expressed in tonnes of CO₂-equivalent. Scope 2 uses the location-based method - pick your country and the electricity factor updates instantly. Nothing is stored on our servers; the calculation runs entirely in your browser.

Natural gas (Scope 1): 0.184 kg CO₂e / kWh gross CV · DEFRA 2024 combustion factor.
Diesel & petrol (Scope 1): 2.51 kg / L diesel, 2.31 kg / L petrol · DEFRA 2024 mobile combustion, well-to-wheel.
Grid electricity (Scope 2): Country-specific 2023 residual mix factors (EEA / national inventories). Range from 0.008 (SE) to 0.657 (PL) kg CO₂e / kWh.
Business travel by car (Scope 3.6): 0.170 kg / km · DEFRA 2024 average passenger vehicle.
Flights (Scope 3.6): Short-haul 0.246 kg / passenger-km, long-haul 0.195 kg / passenger-km · DEFRA 2024 economy class, radiative forcing included.
Purchased goods & services (Scope 3.1): 0.35 kg CO₂e / EUR - spend-based EEIO screening factor. Replace with supplier-specific data before disclosure.
Waste to landfill (Scope 3.5): 0.467 kg / kg · DEFRA 2024 mixed municipal solid waste.
Water supply (Scope 3.4): 0.344 kg / m³ · DEFRA 2024 water supply + treatment combined.

A 45-person consultancy in Nicosia

Consider a professional services firm in Nicosia: 120,000 kWh of grid electricity in Cyprus (0.622 factor), 25,000 km of pool-car travel, 15,000 km of short-haul flights across the EU, and €400,000 of purchased services. Scope 1 is near zero - no combustion on site. Scope 2 hits 74.6 tCO₂e - the Cyprus grid does the damage. Scope 3 adds 4.3 t travel + 3.7 t flights + 140 t spend-based = around 148 t. Total: ~223 tCO₂e / year. Two levers dominate: switching electricity supply to a Guarantee-of-Origin renewable tariff (Scope 2 → ~7 t) and asking the largest three suppliers for verified activity data (Scope 3.1 drops sharply once EEIO is replaced).

Country-specific versions

Same calculator, pre-loaded with each country's grid factor and a domestic worked example.

GHG accounting, answered

Is this calculator compliant with the GHG Protocol Corporate Standard?
It uses the same three-scope structure and location-based Scope 2 method that the GHG Protocol prescribes. For a formal disclosure under CSRD, VSME or SBTi you still need metered activity data, a defined organisational boundary and - for Scope 2 - a dual reporting of market-based factors. Treat the output as directional planning, not audit evidence.
Which grid factors should I choose - location-based or market-based?
This tool shows location-based factors (the grid average where the electricity was consumed). If you have Guarantees of Origin, PPAs or a green tariff, calculate the market-based number separately using the supplier's residual mix - the GHG Protocol requires both to be reported.
Why is my Scope 3 spend-based number so large?
The 0.35 kg / EUR factor is an EEIO screening average across all sectors. It over-estimates low-carbon services and under-estimates heavy industry. Use it to spot which spend categories dominate, then replace those categories with supplier-specific or product-specific factors before publishing.
Can I include refrigerants, fugitive emissions or company-owned vehicles?
Refrigerant leakage (Scope 1) and company-owned vehicles are on the roadmap for the next iteration. For now, estimate refrigerants separately using GWP × kg refrigerant charged and add to Scope 1.
Is my data saved anywhere?
No. Every value stays in your browser's local storage. Nothing is uploaded, shared or read by us.
Which reporting frameworks map to which scopes?
CSRD / ESRS E1 requires all three scopes disclosed separately. VSME Basic Module requires Scope 1 and Scope 2 (location-based). SBTi near-term targets require Scope 1+2 always, and Scope 3 if it is more than 40% of total. CBAM is a separate embedded-emissions regime - use our CBAM tool for that.
How often are the emission factors updated?
DEFRA publishes annually (typically June). EEA grid factors publish annually. This tool is updated within 30 days of a new release - the methodology block shows the version in use.
Can I export the report for my auditor?
Yes. "Save as PDF" produces a print-formatted report showing every activity, factor and result. "Download CSV" gives you the raw data for further processing in Excel or a reporting platform.

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