Calculators for dog owners, smallholders and pond keepers
Due dates, feeding amounts, lambing windows and pond litres, worked out from UK vet charity, farming and government sources. Every tool shows its sums.
Dogs
Due dates, seasons, food portions and what a year of pet insurance costs.
- Dog pregnancy calculatorDue date and whelping window from the mating date.
- Dog season calculatorWhen your dog's next season is likely to start and end.
- Dog food calculatorGrams a day from your dog's weight and the kcal on the bag.
- Pet insurance cost calculatorWhat a year of cover costs you once the excess and co-payment are added.
Smallholding
Lambing and calving dates, and horse weight and forage.
Outdoors
Pond volume and liners, air rifle power limits and drone registration.
How PetSums works
Each calculator uses figures from a named source, such as PDSA, NADIS, the British Horse Society or the CAA, and links to it. The working is shown under every result so you can check it. Your answers stay in your browser; nothing you type is sent to us.
PetSums is independent and isn't a vet. If an animal is unwell or a birth isn't going to plan, call your vet.