Waste and recycling

Type kg per year, recycling and compost. 400, 35 and 15 give 66.0 kg CO₂e (est.). 300, 50 and 20 give 15.3 kg CO₂e (est.). 500, 20 and 10 give 139.5 kg CO₂e (est.). An estimate, not the city.

A model. 400 kg, 35% recycling and 15% compost give 66.0 kg CO₂e (est.). Not the city.

Input data

Results

Enter data and click Calculate.

How it works

Waste and recycling in this calculator is estimated CO₂e from kilograms per year. 400 kg, 35% recycling and 15% compost give 66.0 kg CO₂e (est.). 300, 50 and 20 give 15.3 kg CO₂e (est.). 500, 20 and 10 give 139.5 kg CO₂e (est.). The (est.) suffix sits in the result.

Recycling and compost cannot pass 100. The rest goes to landfill. Landfill × 0.45 minus (recycling+compost) × 0.12, not below 0. That is not measured landfill methane.

66.0 kg CO₂e (est.) is not a waste fee. 15.3 kg CO₂e (est.) is not from the city. 139.5 kg CO₂e (est.) is 500 kg at 20 and 10.

Food waste next door uses a week and other factors. Water footprint counts litres. Here the year stays: 400, 35 and 15 stay 66.0 kg CO₂e (est.).

Type 400, 35 and 15, then Calculate. A comma in 35.5 parses. A three-field sketch, not a waste register.

400, 35 and 15 give 66.0 kg CO₂e (est.). 300, 50 and 20 give 15.3 kg CO₂e (est.). 500, 20 and 10 give 139.5 kg CO₂e (est.). More recycling at 400 lowers 66.0.

Formula

landfill% = 100 − recycling − compost. net = max(0, kg×landfill%×0.45 − kg×(recycling+compost)%×0.12). Result plus “ (est.)”.

How to use

  1. Type kilograms per year, for example 400.
  2. Type recycling 35 and compost 15. The sum cannot pass 100.
  3. Click Calculate. The result is 66.0 kg CO₂e (est.).
  4. 300, 50 and 20 give 15.3 kg CO₂e (est.). 500, 20 and 10 give 139.5 kg CO₂e (est.).
  5. Factors 0.45 and 0.12, not a city report.

400 / 35 / 15 = 66.0 kg CO₂e (est.)

A model. 400 kg, 35% recycling and 15% compost give 66.0 kg CO₂e (est.). Not the city.

Waste
Kilograms per year. 400 at 35 and 15 leave 66.0 kg CO₂e (est.). 500 at 20 and 10 give 139.5.
recycling
The share that leaves landfill. 50 at 300 and 20 leave 15.3 kg CO₂e (est.).
compost
The second share off landfill. 15 at 400 and 35 stays inside 66.0 kg CO₂e (est.).

Examples

Example 1

  • 400 kg/year
  • recycling 35%
  • compost 15%

66.0 kg CO₂e (est.)

How much CO₂e from 400 kg, 35% recycling and 15% compost? 66.0 kg CO₂e (est.). A model, not the city.

Example 2

  • 300 kg/year
  • recycling 50%
  • compost 20%

15.3 kg CO₂e (est.)

How much from 300, 50 and 20? 15.3 kg CO₂e (est.).

Example 3

  • 500 kg/year
  • recycling 20%
  • compost 10%

139.5 kg CO₂e (est.)

How much from 500, 20 and 10? 139.5 kg CO₂e (est.).

Related calculators

Food waste

Weekly food-scrap footprint: landfill versus compost.

Use calculator →

Food water footprint

Weekly virtual water on the plate: meat, rice, and milk.

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All ecology calculators

Common questions

How much CO₂e from 400 kg, 35% recycling and 15% compost?

66.0 kg CO₂e (est.). Factors 0.45 and 0.12, not the city.

How much at 300, 50 and 20?

15.3 kg CO₂e (est.). More recycling and compost lower the result.

How much at 500, 20 and 10?

139.5 kg CO₂e (est.). 500 kg and more landfill.

Is 66.0 kg CO₂e a waste fee?

No. An estimate from three fields. The city register sits outside this calculator.

What if recycling plus compost exceeds 100?

Compost is clipped so the sum does not pass 100.

How is this different from food waste?

That card uses a week and other factors. Here kilograms per year and (est.).

Does a comma in 35.5 work?

Yes. 400, 35.5 and 15 give a different result than 35.

Where do 0.45 and 0.12 come from?

Constants per kilogram in the code. You do not load them from the city.

Do blank persons split 66.0?

No. Options stay empty. The result is the annual estimate.

Knowledge sources

The factors on the page are a sketch. Below are EPA emissions terms, not a national inventory.

Page updated in 2026.