Help your cat lose weight
If your cat is overweight, ask your vet for advice on an appropriate feeding regime to ensure they get enough nutrients, without being overfed.
Weighing food out daily is a helpful way to control portions. Some dry foods come with calibrated scoops, but these are easy to overfill.
If you like to give your cat treats, reduce the amount of normal food you provide.
Never starve overweight cats or put them on 'crash diets'. Any period of time without food can potentially be dangerous. A slow, steady weight loss is ideal. It can take as much as a year for a severely overweight cat to reach its ideal weight.
It is hard to notice weight change in a cat you see every day, so regular weighing is a useful way to monitor progress. Your cat probably won't sit still on your scales, so weigh a carrying box or yourself, then weigh the cat in the box or while holding it and subtract the excess to get your cat's weight.
Some vet practices offer weight clinics, where they can regularly weigh your cat using their specialist scales.