Pet Food Transition Calculator
Switching your pet's food too fast is one of the most common causes of diarrhoea and vomiting. This tool builds a safe, day-by-day transition plan — adjusted for your pet's gut.
Build your transition plan
Enter your pet's details. The plan updates for raw, cooked, kibble or wet food — and slows down automatically if your pet has a sensitive gut.
Your transition plan
| Day | Mix (old → new) | Current food · per meal | New food · per meal | What to do |
|---|
Weigh food with kitchen scales for accuracy — cups are wildly inconsistent. Feed each meal at your pet's normal times.
💊 Probiotic support
↩︎ The golden rule: if the poop goes soft, pause — don't push
If stool turns loose or your pet seems off at any step, hold at the current ratio for 2–3 days until droppings firm up again, then continue. If it stays loose, drop back one step. A slow transition that works beats a fast one that lands you at the vet.
⚠️ Normal & expected in the first few days
- Slightly softer stool or a bit more gas as the gut adjusts
- Keen appetite for the new food (especially raw/cooked)
- Minor changes in stool colour and volume, particularly moving to raw
🚑 Stop the transition and call a vet if you see
- Vomiting more than once or twice, or that won't settle
- Watery diarrhoea lasting more than 48 hours, or any blood in stool or vomit
- Not eating, lethargy, painful or bloated belly, or collapse
- Cats: refusing food for more than 24 hours — never let a cat go without eating (risk of hepatic lipidosis)
- Puppies, kittens, seniors or unwell pets going downhill — they dehydrate fast
This calculator gives general guidance for healthy transitions and is not a substitute for individual veterinary advice. Pets with diagnosed disease, on medication, pregnant, very young or very old should be transitioned under the guidance of their own vet. Always ensure fresh water and handle raw food hygienically.