Durvela Composter Size & Benefit Calculator

This calculator uses the same 14-day nutrient-availability, moisture, settling, and sizing assumptions as the Compost Mix Calculator. Use the mix calculator for a custom feedstock recipe.

Use the Compost Mix Calculator →

Your composting estimate

Region / currency Units

People in household

people

Estimated food scraps per week

kg/week

For businesses, cafés, farms, schools, resorts, and institutions, use the estimated scraps per week field instead of relying on the people in household number.

Annual purchased browns expense (optional)

$/year

Annual cost of purchased carbon-rich material such as wood pellets, shavings, cardboard or other bulking agents. Enter zero when suitable browns are available at no cost.

Advanced assumptions

Weeks composting per year

weeks/year

The number of weeks each year the system receives food scraps. The default assumes year-round use; reduce it for seasonal properties or operations. Estimated emissions avoided

kg CO₂e/kg

Estimated greenhouse-gas reduction for each kilogram of food waste diverted from the assumed disposal pathway. The default is illustrative; landfill methane capture, transport and local composting conditions can change the result. Share of disposal cost actually avoided

The portion of the regional disposal cost that composting actually eliminates. Use 100% when charges vary directly with waste weight or pickups; reduce it when municipal fees or collection costs remain fixed. Estimated time saved at this waste volume

hours/year

Estimated reduction in annual hands-on work compared with conventional composting or disposal, including manual turning and mixing, moving material between bins, managing moisture, odours and pests, transporting waste, and purchasing or handling bagged compost. It increases in proportion to the annual food-waste volume. Value of your time

$/hr

The value assigned to each hour saved. Households can use a personal value of time; businesses should use the employee's fully loaded labor rate, including payroll costs where appropriate. Typical replacement cost of alternative composter

A conservative purchase-cost benchmark drawn from lower-cost conventional bins, tumblers or institutional composters used in this waste-volume range. It estimates repeat purchases Durvela may avoid. Replacement interval

years

Expected useful life of the alternative composting equipment. A $300 alternative replaced every five years produces an avoided replacement value of $60 per year.

Your annual estimate

Recommended system Durvela 300

Best for most households

View this size

Food waste diverted 0 kg

Finished compost produced 0 kg

Recommended browns per year 0 kg

Estimated water to add 0 L/week

Equivalent compost bags 0

Estimated emissions avoided 0 kg

Estimated net annual value $0

This calculator begins with illustrative default values for potential disposal, compost, carbon, time, and replacement savings. Adjust the assumptions to reflect costs and savings that actually apply to your situation. The bulk compost value is shown as an alternative comparison and is not added to the retail replacement value. Carbon results depend on the disposal baseline and local conditions.

Durvela Composter Size and Cost-Benefit Calculator

Your composting estimate

Your annual estimate