Uses Singapore EMA’s latest published 2024 grid emission factor of 0.402 kg CO₂ per kWh.
Optional. Add your own estimated monthly emissions from car travel, gas, public transport or other activities if you have a trusted source.
Optional. Enter annual emissions from flights or other activities using a trusted emissions calculator or source.
Disclaimer: Estimate only; electricity uses Singapore EMA’s published grid factor, while any other emissions depend on the figures you enter and their source.
Carbon Footprint Calculator Singapore
Use the Carbon Footprint Calculator Singapore to estimate emissions from your monthly electricity consumption and other emissions figures you already have from trusted sources.
The calculator applies Singapore’s published 2024 grid emission factor to electricity use. Other monthly emissions and annual flight emissions are not calculated automatically. You must enter those figures yourself.
This tool provides a limited estimate. It is not a complete household, business or personal greenhouse-gas inventory.
How to Use the Carbon Footprint Calculator
Follow these steps:
- Find your monthly electricity consumption in kilowatt-hours.
- Enter the amount in the Electricity Usage field.
- Add other estimated monthly emissions if you have a reliable figure.
- Add annual flight or other annual emissions if available.
- Select Calculate.
- Review the estimated monthly and annual totals.
Only the electricity field uses a built-in emission factor. The two optional fields depend entirely on the figures and sources you use.
If you know your electricity bill amount but not the consumption figure, check the bill for the number marked kWh. The Singapore Electricity Calculator can help with a separate electricity-cost estimate.
What Does the Calculator Include?
Monthly electricity usage
Enter the electricity consumed during one month in kWh. You can normally find this figure on your electricity bill or account statement.
Do not enter the bill amount in Singapore dollars. The calculator requires energy consumption, not cost.
Other estimated monthly emissions
This optional field lets you add an emissions estimate from activities such as:
- Car travel
- Public transport
- Fuel or gas use
- Regular deliveries
- Other monthly activities
The calculator does not convert kilometres, litres of fuel or transport trips into emissions. Enter a result only when you have already calculated it using a trusted source.
Flight or other annual emissions
Use this optional field for a trusted annual emissions figure from flights or another yearly activity.
Enter the amount in kilograms of CO₂ per year. The calculator converts this annual figure into a monthly share when preparing the monthly total.
Singapore Electricity Emission Factor
The calculator uses Singapore’s 2024 average grid emission factor:
0.402 kg CO₂ per kWh
The Energy Market Authority states that Singapore’s average grid emission factor fell from 0.412 kg CO₂/kWh in 2023 to 0.402 kg CO₂/kWh in 2024.
The grid emission factor measures average carbon dioxide emissions per unit of net electricity generated by grid-connected power units. It is an average and does not measure the exact emissions created by one household at a particular time.
You can verify the figure on the official EMA Energy Transformation page.
Carbon Footprint Calculation Formula
The calculator first estimates monthly electricity emissions:
Electricity emissions = Monthly electricity use × 0.402
It then converts the annual figure into a monthly amount:
Monthly share of annual emissions = Annual emissions ÷ 12
The estimated monthly total is:
Monthly total = Electricity emissions + Other monthly emissions + Monthly share of annual emissions
The estimated annual total is:
Annual total = Monthly total × 12
For example, if a household uses 350 kWh of electricity in one month:
350 × 0.402 = 140.7 kg CO₂
If the household also enters 120 kg of other monthly emissions and 600 kg of annual flight emissions:
600 ÷ 12 = 50 kg per month
The estimated monthly total becomes:
140.7 + 120 + 50 = 310.7 kg CO₂
The estimated annual total is:
310.7 × 12 = 3,728.4 kg CO₂
Use the Online Calculator if you want to check any individual arithmetic step separately.
What the Result Does Not Show
The result is not a complete carbon footprint unless you have independently calculated and entered every relevant source.
It may exclude:
- Food and diet
- Products and services
- Waste disposal
- Water use
- Construction and housing
- Purchased goods
- Full transport emissions
- Overseas activities
- Supply-chain emissions
- Other greenhouse gases
The built-in electricity calculation uses CO₂. Other tools may report carbon dioxide equivalent, written as CO₂e, which can include other greenhouse gases. Do not combine figures with different units without checking their meaning.
How to Improve the Estimate
Use figures from the same period and make sure every input uses kilograms of emissions.
Helpful checks include:
- Use actual electricity consumption from a bill
- Do not enter electricity cost as kWh
- Avoid counting the same activity twice
- Check whether a source reports CO₂ or CO₂e
- Convert tonnes to kilograms correctly
- Keep monthly and annual figures separate
- Record the source and date of every estimate
Emission factors can change. A future electricity estimate may differ when EMA publishes a new grid factor.
Ways to Reduce Electricity-Related Emissions
A lower electricity footprint normally begins with using less grid electricity.
Possible steps include:
- Switch off unused lights and devices
- Choose energy-efficient appliances
- Use air-conditioning carefully
- Clean air-conditioner filters
- Avoid unnecessary standby power
- Compare monthly kWh use
- Set practical household targets
Reducing electricity use may also reduce household expenses. The Singapore Cost of Living Calculator can help you review broader living costs separately.
Deliveries, Packaging and Emissions
Postal and delivery choices may affect packaging and transport emissions, but this calculator does not estimate them automatically.
Avoid entering an invented postage-emissions figure. Use a trusted lifecycle or delivery estimate where available. For mailing-cost information, use the Singapore Postage Calculator, which is a separate price tool and does not calculate carbon emissions.
Other Singapore Tools
Visit the Calculator Singapores homepage to explore more Singapore calculators and tools.
Important Disclaimer
This calculator provides a general estimate only. It is not an official carbon-accounting, regulatory or reporting tool.
Electricity emissions use Singapore EMA’s published 2024 average grid emission factor of 0.402 kg CO₂/kWh. Other monthly and annual emissions depend entirely on the values you enter and the sources behind them.
Do not use the result for regulatory reporting, carbon claims, legal compliance or professional greenhouse-gas accounting. Seek qualified assistance when preparing a formal emissions inventory.
Frequently Asked Questions
What does this carbon footprint calculator calculate?
It estimates electricity-related emissions using monthly kWh consumption. It also adds other monthly and annual emissions figures entered by the user.
Does it calculate transport emissions from distance?
No. It does not ask for kilometres, vehicle type or fuel use. Enter a transport-emissions figure only if you obtained it from a trusted source.
Does it calculate flight emissions automatically?
No. You must enter an annual flight-emissions estimate from another trusted calculator or source.
What electricity emission factor does it use?
It uses Singapore’s published 2024 average grid emission factor of 0.402 kg CO₂/kWh.
Is the result a complete household carbon footprint?
No. Important sources such as food, purchases, waste and some transport activities may be missing.
What is the difference between CO₂ and CO₂e?
CO₂ refers to carbon dioxide. CO₂e converts the effects of different greenhouse gases into a common carbon-dioxide-equivalent unit. Check the unit used by every source.
Can I enter tonnes instead of kilograms?
No. The calculator fields expect kilograms. Multiply tonnes by 1,000 before entering the figure.
Is the result suitable for official reporting?
No. It is a general educational estimate and should not be used for regulatory or professional emissions reporting.