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How much to feed

How much should I feed a 70 lb dog?

Last updated 23 September 2026 · How we write and check this

Short answer

A 70 lb dog, about 31.75kg, typically needs around 395 to 420g of a standard dry food a day. This is a common weight for large family dogs, and it is also where the difference between an active dog's needs and a mostly sedentary dog's needs starts to become a genuinely large gap in grams, not just a small tweak.

The calculation

A 70 lb dog weighs about 31.75kg, giving a resting energy of around 937 kcal, and a typical neutered adult at normal activity needs close to 1.6 times that, about 1,500 kcal a day. At 350 to 400 kcal per 100g of dry food, that lands near 395 to 420g.

A genuinely sedentary dog at this weight might only need around 1.2 times resting energy, closer to 300 to 320g, while a very active dog could need 1.8 times or more, closer to 460 to 490g.

Why the range matters more at this weight

At 70 lb, the gap between the low and high end of typical activity multipliers is roughly 150g of food a day, a meaningful difference that is worth getting right rather than defaulting to the middle without checking.

Think honestly about your dog's actual week, counting walk length, off lead running, and any structured exercise, rather than how active you intend to be.

Fine tuning

Start at the calculated middle figure, hold for three weeks, and adjust by 10 percent based on the waist and ribs rather than the number on a chart.

Recheck the amount whenever your dog's routine changes meaningfully, such as starting or stopping regular runs. Writing the current gram target on the food bag itself helps keep feeding consistent if more than one person in the household handles mealtimes and updates happen occasionally.

Key takeaways

  • A 70 lb (31.75kg) dog typically needs about 395 to 420g of dry food a day at average activity.
  • The gap between a sedentary and very active dog's needs at this weight is around 150g.
  • Judge activity honestly based on the actual week, not intentions.
  • Revisit the amount whenever exercise habits change meaningfully.