Waste Diversion Calculator Formula

Understand the math behind the waste diversion calculator. Each variable explained with a worked example.

Formulas Used

Diversion Rate

diversion_rate = diverted / total_waste_lbs * 100

Annual Waste Diverted

annual_diverted = diverted * 52

Annual to Landfill

annual_landfill = landfill * 52

CO2 Saved by Diversion

co2_saved = diverted * 52 * 0.5 / 2204.6

Variables

VariableDescriptionDefault
total_waste_lbsTotal Weekly Waste(lbs)50
recycled_lbsRecycled Waste(lbs)15
composted_lbsComposted Waste(lbs)10
reused_lbsReused/Donated(lbs)3
divertedDerived value= recycled_lbs + composted_lbs + reused_lbscalculated
landfillDerived value= total_waste_lbs - divertedcalculated

How It Works

How to Calculate Waste Diversion Rate

The waste diversion rate measures what percentage of waste is kept out of landfills.

Formula

Diversion Rate = (Recycled + Composted + Reused) / Total Waste * 100

Benchmarks

  • Average US household: ~35% diversion
  • Leading cities (SF, Seattle): 60-80%
  • Zero-waste goal: 90%+
  • EU average: ~47%
  • Worked Example

    A household producing 50 lbs/week total, recycling 15 lbs, composting 10 lbs, reusing 3 lbs.

    total_waste_lbs = 50recycled_lbs = 15composted_lbs = 10reused_lbs = 3
    1. 01Diverted: 15 + 10 + 3 = 28 lbs
    2. 02Landfill: 50 - 28 = 22 lbs
    3. 03Diversion rate: 28 / 50 * 100 = 56%
    4. 04Annual diverted: 28 * 52 = 1,456 lbs

    Frequently Asked Questions

    What is a waste diversion rate?

    Waste diversion rate is the percentage of waste kept out of landfills through recycling, composting, reuse, and other recovery methods. Higher rates mean less landfill impact.

    What are the easiest ways to increase diversion?

    Start composting food scraps (30-40% of household waste), recycle all accepted materials, donate usable items, and choose products with less packaging.

    What is zero waste?

    Zero waste aims to divert 90%+ of waste from landfills. It requires redesigning products, maximizing recycling and composting, and reducing consumption. Several cities have adopted zero-waste goals.

    Ready to run the numbers?

    Open Waste Diversion Calculator