Dog Sleep Calculator
How much should your dog sleep? This free dog sleep calculator estimates daily sleep needs by age, breed and size — how many hours out of 24 and what percentage of the day — with a puppy nap-schedule tool, a night-and-naps planner, and a “too much or too little” sleep check.
How the Dog Sleep Calculator Works
The five tools cover overall sleep needs, a by-breed lookup, a puppy nap schedule with wake windows, a night-and-naps planner, and a too-much-or-too-little sleep check.
How Many Hours Should a Dog Sleep? (By Age)
Sleep needs change most with age. Here is the typical daily sleep by life stage:
| Life stage | Sleep per day | % of the day |
|---|---|---|
| Puppy (0–6 months) | 18–20 hours | ~75–83% |
| Junior (6–12 months) | 14–16 hours | ~58–67% |
| Adult (1–10 years) | 12–14 hours | ~50–58% |
| Senior (10+ years) | 16–18 hours | ~67–75% |
How Many Hours Out of 24 Do Dogs Sleep?
A typical adult dog sleeps 12 to 14 hours out of every 24, which is a little over half the day. Add in drowsy resting and the figure climbs higher — this is completely normal. Because dogs are polyphasic, they rarely sleep in one stretch: expect a solid block overnight plus several naps during the day. The exact total shifts with age (puppies and seniors sleep more), breed size (giant breeds are famous snoozers), activity and even the weather, with many dogs sleeping more in winter.
How Much Should a Puppy Sleep?
Puppies need a huge amount of sleep — about 18 to 20 hours a day — because they grow and learn so fast. The key skill is managing wake windows: young puppies can only stay happily awake for around 1 to 2 hours before they need a nap. Miss that window and an over-tired puppy becomes bitey, frantic and impossible to settle — the cure is more sleep, not more play. Many trainers use the 1-up / 2-down rule: roughly one hour awake for every two hours of enforced nap in a crate or pen. Use the Puppy Naps tab for your puppy’s age.
Why Do Dogs Sleep So Much?
Dogs sleep more than humans for a few reasons. Their sleep is less efficient — they spend less of it in restorative REM, so they need more total hours. They are polyphasic, built to rest whenever there is nothing to do and wake instantly if something happens, a legacy of their ancestors. And sleep needs rise with growth (puppies), age (seniors), big days of exercise, recovery from illness, and sheer boredom. A healthy, well-exercised adult that is alert and happy when awake is sleeping the right amount, even if that looks like a lot to us.
Is My Dog Sleeping Too Much or Too Little?
Judge the 24-hour total, not a single long nap. Sleeping a bit more than the guideline is usually fine — boredom, a lazy or giant breed, or a tiring day. What’s worth a vet’s attention is a clear, lasting change: a dog that suddenly sleeps far more and seems dull, or far less and seems restless, especially alongside changes in appetite, weight, thirst or mood. Too little sleep in puppies is often over-stimulation; in adults it can be noise, stress or pain. The Too Much? tab compares your dog’s hours to the healthy range for their stage.
Frequently Asked Questions
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