CO2 Calculator – Carbonkiller

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Step 1 of 17 - Intro

How big is your carbon footprint?

With this handy Carbonkiller tool you can calculate the CO2 footprint of your household. This test takes approximately 6 minutes and consists of 15 questions.

By household we mean a living situation in which you are jointly responsible for, for example, the energy bill and the purchase of larger furniture. Do you live with others but would you like to complete this questionnaire for yourself? Then divide the energy consumption, etc. by the total number of people.

How many people does your household consist of, including yourself?*

1 person

2 persons

3 persons

4 persons

5 or more persons

Do you have solar panels?*

Yes

How much electricity do you use per year?*

You can find your consumption on the annual overview of your energy supplier. Don't know your power consumption? Then enter the average power consumption for a 1-person household: 1800 kWh.

Less than 1500kWh

Between 1500kWh and 2000kWh

Between 2000kWh and 2500kWh

Between 2500kWh and 3000kWh

Between 3000kWh and 3500kWh

More than 3500kWh

What is your electricity consumption and return per year (in kWh)?

How much grid electricity per year (in kWh)?*

You can find your consumption on the annual overview of your energy supplier. Don't know your power consumption? Then enter the average power consumption for a 1-person household: 1800 kWh.

Less than 1500kWh

Between 1500kWh and 2000kWh

Between 2000kWh and 2500kWh

Between 2500kWh and 3000kWh

Between 3000kWh and 3500kWh

More than 3500kWh

How much electricity do you return to the grid per year (in kWh)?*

You can find your consumption on the annual overview of your energy supplier. Don't know your power consumption? Then enter the average power consumption for a 1-person household: 1800 kWh.

Less than 1500kWh

Between 1500kWh and 2000kWh

Between 2000kWh and 2500kWh

Between 2500kWh and 3000kWh

More than 3000kWh

If you do not know your consumption and return, you can fill in the averages below. This makes the calculation of your CO2 footprint less accurate.

Power consumption from the grid: 1,900 kWh
Return of electricity to the grid: 2,600 kWh

These averages apply to a household with 10 solar panels facing south.

How much gas or heat do you use per year?*

You can find your consumption on the annual overview of your energy company.

Less than 800m3

Between 800m3 and 1200m3

Between 1200m3 and 1500m3

Between 1500m3 and 1750m3

More than 1750m3

Car use*

We don't have a car

We have one car

We have two cars

We have three cars

Class car 1*

Fuel car 1*

Kilometers per year car 1*

Class car 2*

Fuel car 2*

Kilometers per year car 2*

Class car 3*

Fuel car 3*

Kilometers per year car 3*

How often per week does your household use the bus, tram or metro?*

We do not use public transport

Once a week

Twice a week

3 times per week

4 times per week

5 times per week

6 times per week

7 or more times per week

Do you fly once a year or more often?*

Yes

How often do you fly on average per year (outside the corona pandemic)?

Add up the flights of all people in your household. A return flight counts as flying 1 time: so for a return flight with 1 person, enter 1. For a return flight with 4 people, enter 4. If you have not flown within zones, enter 0.

Short-haul flights (zone 1), e.g. Berlin, Copenhagen*

Medium-haul flights (zone 2), e.g. Rome, Nice*

Long-haul flights (zone 3), e.g. USA, Kenya, China*

Very long-haul flights (zone 4), e.g. Hawaii, Australia*

How often does your household consume meat or fish per week?*

Choose the answer that best matches your situation.

Never, we always eat vegetarian/vegan

Maximum once a week

Usually 2 to 4 days a week, vegetarian on the other days

Usually 5 to 6 days a week and 1 day vegetarian

Almost every day. We (almost) never eat vegetarian

How many dairy products and cheese does your household eat and drink per person per day?*

Think of milk, buttermilk, chocolate milk, cottage cheese, cheese, yoghurt, butter, ice cream, (whipped) cream and custard. This concerns dairy products, not vegetable substitutes such as soy milk. 1 portion is, for example, a glass of milk, a bowl of yogurt or a sandwich with cheese. Choose the answer that best matches your situation.

Never. We do not use dairy products at all.

Maximum 1 or 2 portion(s) of diaryper person per day.

Usually 3 to 5 portions of diary per person per day.

About 6 portions of diary per person per day.

8 or more portions of diary per person per day.

How much food is thrown in the waste bin in your household?*

Choose the answer that best suits your situation. Thick liquids such as soup, sauces, oil and yoghurt also count, as does spoiled food. Husks, bones, stumps and eggshells should not be counted.

We never throw anything away; we coordinate the groceries carefully with the meal plans and eat leftovers at a later time.

We try to waste little and often cook with leftovers, but sometimes we throw away some sour milk, dry bread or wilted lettuce.

We are careful not to make too much. But we hardly ever cook with leftovers, we sometimes throw some of it away.

Something is often left out for too long and we almost never cook with leftovers. We throw away quite a bit of bread, vegetables, fruit or dairy.

We regularly have to throw away products that have expired. We often cook too much and what is left goes into the waste bin.

How many pants does your household buy per person per year?*

This concerns long and short pants, but not underwear.

1 or less

2 to 5

6 to 8

9 to 12

13 or more

What percentage of all clothing do you buy second-hand?*

81 to 100%

61 to 80%

11 to 60%

21 to 40%

0 to 20%

How long does your household last with a sofa in the living room?*

Enter here how many years on average you use a sofa before replacing it with another one. This concerns the sofa in the living room and not sofa beds in children's rooms or guest rooms

Longer than 20 years

15 to 20 years

10 to 15 years

5 to 10 years

0 to 5 years

What percentage of your furniture do you buy second-hand?*

Consider all the furniture in your home, such as cupboards, beds, tables and chairs.

81 - 100%

61 - 80%

41 - 60%

21 - 40%

0 - 20%

How long does your household use a mobile phone on average before you replace it?*

Longer than 4 years

3 to 4 years

2 to 3 years

1 to 2 years

Less than 1 year

How many of the mobile phones, tablets and computers actively used in your household are second-hand or refurbished?

If someone in your household has taken over the telephone from someone else (for example if a child uses one of the parents' old telephone), you also count that telephone as second-hand.

81 - 100%

61 - 80%

41 - 60%

21 - 40%

0 - 20%