Use the calculator below to figure out how much litter (in mL) your cat(s) will use in a given day/week/month, and also plug in the cost and quantity of your preferred litter brand to get a cost. This tool can be helpful to enable you to compare multiple brands of litter to find a better deal.

Daily Litter Use: 0mLWeekly Litter Use: 0mL

Monthly Litter Use: 0mL

## Calculator Notes & Assumptions

- This calculator operates on the assumption of 30mL of litter being the amount needed to clump a cat pee, which seems to be an accepted ‘average’ measure
- This calculator operates on the assumption of the volume of the cat litter in the litter tray being 1/4 the volume of the litter tray itself … unless you like to fill your litter tray until it’s overflowing!
- The number of pees per day is the average per cat (so if you have two cats peeing four times a day each, just write ‘4’ in the box not 8 – the calculator does that bit in the background for you)
- The calculator is denominated in $ but you can just input a figure from your own currency (all it means is the currency symbol won’t be the right one for you)

Thanks to Free NZ GST Calculator for sponsoring this tool.