How we calculate walk times and weather risk

Our tools combine general guidance with our own planning assumptions. Here's how they work, what they can't know about your dog, and where the numbers come from.

By Tyler Polk, founder of PupnikUpdated October 23, 2026

Daily exercise by breed

Each of our 100 breed guides gives a typical daily range for a healthy adult, such as 60–90 minutes for a Labrador Retriever. We set each range from the breed's original job and energy level, cross-checked against breed-club and kennel-club exercise guidance (the American Kennel Club breed standards and the UK Kennel Club's exercise categories). Ranges are deliberately rounded, and individual dogs vary a lot, especially between working and show lines.

"Exercise" means all activity: walks, play, swimming, and training. For mixed breeds, the calculator uses a size-and-energy table (for example, a medium dog with moderate energy gets 45–60 minutes).

These are editorial planning estimates, not a clinically validated prescription for an individual dog. The breed ranges, age cutoffs and percentage adjustments below are model assumptions; the linked sources do not endorse this exact calculator.

Puppies, seniors, and adjustments

• Puppies use the widely used rule of thumb of 5 minutes of structured walking per month of age, up to twice a day, capped at half the adult daily maximum per walk. PDSA notes that evidence for a universal five-minute rule is limited. It is not a proven safe allowance or an activity quota.
• Growth plates are assumed to close around 9–12 months for toy and small breeds, 12–15 for medium, 12–18 for large, and 18–24 for giant breeds. We advise against jogging and repetitive jumping before then.
• Seniors start at about 10 years for toy and small breeds, 8 for medium, 7 for large, and 6 for giant breeds. Their daily range is 50–75% of the adult range, split into more, shorter walks.
• Short-nosed breeds are capped at about 20 minutes per walk, because heat and breathing are the limit, not stamina.
• Distance is minutes times an assumed pace: about 1.2–2 mph for relaxed walks, puppies, and seniors, 1.8–2.6 mph for moderate dogs, and 2–3 mph for active dogs. These are not measured breed averages. This estimate treats the entire exercise range as walking, so play or training can make actual walking distance lower. The website does not display a puppy distance target.
• Health conditions. Selecting a heart, breathing or joint condition does not adjust the model to that condition. The website withholds its numerical result and asks for a vet-led plan. The overweight option adds a note rather than changing the numbers.

Hot weather

We start from the heat index, calculated with the US National Weather Service formula, so humidity counts. We then assign a level from 1 to 5 for a healthy adult dog: under 75°F is 1, 75–84°F is 2, 85–89°F is 3, 90–94°F is 4, and 95°F and up is 5. In other words, a healthy adult dog is fine on a normal walk, with shade and water, up to about 85°F.

The level goes up by one for each of these: short nose, overweight, puppy or senior, thick or double coat, giant size, and strong sun (daytime with under 40% cloud cover once it feels like 90°F or more). The short-nose, obesity, and age factors follow the Tufts Animal Care and Condition (TACC) weather safety scale. The coat, size, and sun factors are our additions, based on common veterinary guidance. We also apply the "rule of 150": if temperature (°F) plus humidity (%) is 150 or more, it's at least a level 3 (shorter walks) day.

The pavement estimate adds 40–55°F to the air temperature in full sun, scaled down by cloud cover, and 0–10°F at night. That reproduces the widely cited measurement of asphalt at about 125°F on a sunny, still 77°F day. It's an estimate: surfaces, wind, and shade vary, so always do the 7-second hand test.

Cold weather

We use the NWS wind chill when it's 50°F or colder and windy, then assign a level from widely used veterinary thresholds: 45°F and up is 1, 32–44°F is 2, 20–31°F is 3, 10–19°F is 4, and below 10°F is 5. Following the TACC scale, small or thin-coated dogs, puppies, seniors, and wet weather each add one level. Thick-coated northern breeds subtract one.

How long to be out

From level 3 up, in heat or cold, the checker also gives the longest outing that level suggests: about 15 to 20 minutes at level 3, 5 to 10 at level 4, and quick potty breaks of under 5 minutes at level 5. When we know your dog's usual walk, as the app does, it's never longer than that. It's advice, not a rule: you know your dog.

In the Pupnik app

The Pupnik iPhone app uses this same method, and automated tests check it against this site's calculations, so both give the same answer for the same dog and weather. Instead of asking, the app fills in the details from your dog's profile: size, coat, and short nose from the breed, and age from the birthday. For weather, a dog counts as a puppy under 6 months and as a senior from the size-based ages above. Mixed breeds, and breeds without a guide here, are treated as a medium dog with an average coat, and the app doesn't estimate their walk length. The app gets current conditions from Apple Weather.

Weather data and your privacy

"Check my weather now" asks your browser for your location, rounds it to about 10 km, and fetches the current forecast hour from MET Norway's Locationforecast API (licensed CC BY 4.0). We don't store your location. You can always enter the weather manually instead.

Pupnik community data

Some breed guides show how long that breed actually walks with Pupnik. Those figures come only from completed, GPS-verified walks in the last 90 days. We publish them only as aggregates, and only when enough dogs and owners are in the sample that no individual can be singled out. Until a breed crosses that threshold, its guide shows the published-guidance range only.