ToolnozaStart with your actual daily ration
Pet food cost per day equals the bag price multiplied by the fraction of the bag consumed each day. You need the bag’s net food weight, the amount paid and a daily ration per pet. This guide calculates a budget; it does not choose a nutritional ration.
Formula for daily, monthly and annual cost
Let P be bag price, B bag weight, R daily ration per pet and N pet count. Daily cost = P × R × N / B. Bag duration in days = B / (R × N).
Toolnoza multiplies daily cost by 30 for the monthly estimate and by 365 for the annual estimate. The monthly figure is a fixed 30-day budget, not an exact calendar month. B and R must use the same weight unit.
Example: a 10 kg bag at a price of 40
Convert 10 kg to 10,000 g. For one pet eating 200 g per day, the bag lasts 10,000 / 200 = 50 days. Daily cost is 40 × 200 / 10,000 = 0.80. The 30-day budget is 24 and the 365-day budget is 292, in the currency selected.
Two pets consuming the same 200 g ration each would finish the bag in 25 days. The combined daily cost would be 1.60. Changing the currency label does not convert the price: enter the amount in that currency.
Compare bags by unit price and feeding cost
Divide bag price by net kilograms to find price per kg. A 10 kg bag at 40 costs 4/kg; a 3 kg bag at 15 costs 5/kg. At the same 200 g daily ration, those prices give 0.80/day and 1.00/day.
That comparison assumes the same ration. Different foods may need different feeding amounts. If the ration changes, recalculate daily cost with the amount appropriate to that food rather than comparing bag prices alone.
Mixed feeding, different pets and excluded costs
For dry and wet food, calculate each product separately and add the daily costs. For pets with different rations, calculate them separately too; the pet-count field assumes the same ration for every animal.
The estimate assumes no waste and a constant price and ration. Add delivery fees, treats and supplements separately if they belong in your budget. To estimate purchasing cash flow, round required bags up for your chosen period; fractional bag cost and actual checkout spending are different.