Cat care · planning tool

Litter cost calculator

Compare two setups with the same household assumptions. See how everyday supplies and replacement purchases add up before deciding what fits your budget.

Sample values, not current prices. Replace with prices you have checked.

See our automatic litter box comparisonfor maker specs and dated official-site prices to use as a starting point.

Your household

Number of cats (1–6)Comparison period (1–10 years)Stress test: +25% usage

The stress test increases litter and liner usage. Other annual costs stay as entered.

Setup A

Setup nameUpfront cost$ · unit and required accessoriesLitter bag price$ per bagLitter bag weightlb per bagLitter usagelb per cat per weekLiner pack price$ per packLiners in a packliners per packLiner usageliners per cat per weekOther recurring costs$ per year · filters, electricity, refillsExpected lifespanyears before replacing the unit

Setup B

Empty or invalid numbers count as zero. A zero bag weight or liner count contributes no cost for that supply; enter both price and quantity for a useful estimate. A zero lifespan uses one year.

Your cost comparison

A: Traditional scoop box

Monthly recurring: —
First-year cost: —
Total over comparison period: —
Cost per year averaged over lifespan: —

B: Self-cleaning box

Monthly recurring: —
First-year cost: —
Total over comparison period: —
Cost per year averaged over lifespan: —

Enter your assumptions to compare totals.

All amounts are in USD. Estimates hold prices and usage constant; they exclude inflation, financing, resale value, and the value of your time. First-year cost is the initial purchase plus 12 months of recurring costs.

Cumulative cost by month

Month 0 includes the upfront purchase. Replacement purchases appear after each expected lifespan has passed.

View as table

Yearly cumulative costs in USD, including the upfront purchase at year 0.
Year	Setup A	Setup B

How the math works

Litter cost is the bag price divided by bag weight, multiplied by pounds used per cat per week and the number of cats. Liners use the same approach with pack price, pack count, and weekly use. We convert weekly costs to monthly costs using 52 weeks divided by 12, then add one twelfth of other annual costs.

The period total adds monthly recurring costs to upfront and replacement purchases. The annual lifespan average is upfront cost divided by expected lifespan, plus 12 months of recurring costs. The stress test multiplies litter and liner use by 1.25.

Break-even is the first month when B's cumulative cost is no more than A's within your comparison period. Later replacements can reverse that lead, so also check the final totals and chart. Fractional lifespans are checked month by month; a replacement exactly at the endpoint is counted in the following month.

Frequently asked questions

Does a self-cleaning box pay for itself?

Only if your entered costs make it cheaper over time. A higher upfront cost needs enough recurring savings to catch up, and replacement purchases can change the result. Convenience may matter to you even when there is no financial break-even. This calculator does not assume measured litter savings.

What should I include in recurring costs?

Include compatible litter and liners or waste bags, then add filters, required refills, subscriptions you plan to use, and electricity under other annual costs. Use your household's expected usage and checked prices. Avoid counting the same supply twice.

Why does lifespan matter?

A unit that needs replacing sooner spreads its upfront cost over fewer years. The period total includes another purchase at the same upfront cost when the entered lifespan has passed. The lifespan average spreads one upfront purchase across its expected life and adds annual recurring costs. Lifespan is your estimate, not a warranty or reliability prediction.