Whippet Age Calculator
A 19th-century English sighthound developed in the industrial north from small Greyhound and terrier crosses for working-class hare coursing and rabbit-catching — the "poor man's racehorse." Fine-coated, deep-chested, with the double-suspension gallop of larger sighthounds in a 25–40 lb body. Affectionate and notably quiet indoors. Whippets typically weigh 25–40 lb (11.3–18.1 kg) at adulthood and live 12–15 years on average.
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Personalized, breed-aware, with two scientific methods compared. Enter your dog's details below.
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That's about the same as a human young adult.
Adult — Prime adult years; maintain weight and dental care.
How this number was calculated (and other methods)
| AKC size-based method (recommended) | — |
| Wang epigenetic-clock (2020) Labrador-derived; small-breed accuracy unverified | — |
| Old "× 7" rule | — |
| Typical breed lifespan | — |
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How long do Whippets live?
Whippets typically live 12–15 years, with a median lifespan around 14 years. Medium-sized breeds like the Whippet have above-average lifespans for the canine size spectrum. The strongest modifiable factor is body condition: dogs kept at BCS 4–5/9 (lean) routinely outlive their average by 1–2 years, while overweight dogs lose a comparable amount. Dental care from puppyhood + annual bloodwork from middle age are the next two highest-leverage longevity inputs.
Origins of the Whippet
Developed in the industrial north of England during the 1840s-1860s by working-class coal miners and textile-mill workers who wanted a smaller, more affordable sighthound for hare coursing and rabbit-catching - sports they could pursue on Sundays. Foundation crosses combined small Greyhounds with regional terriers (Bedlington, Manchester) for grit and speed in compact form. The breed earned the nickname poor mans racehorse from rag-racing - sprint racing on improvised straight tracks behind waved rags - which became a major working-class spectator sport in northern England by the 1880s. Kennel Club recognition came in 1891; AKC recognition followed in 1888. Whippets remain a competitive racing breed today through the National Whippet Racing Association and similar organizations worldwide, with track speeds verified at 40+ mph.
How a Whippet ages
A Whippet's biological clock runs steadily once puppyhood ends. After the front-loaded first two years (~24 cumulative human-equivalents), 5 per dog year is the typical rate. A 5-year-old Whippet is around 39 in human terms; a 10-year-old, closer to 64 — solidly into mid-senior territory.
Whippets sit in the upper longevity tier of dog breeds. The 15-year published range is reached routinely, and individuals past it are documented in breed-club records. The factors that move a Whippet from "average" to "above average" are the same ones that move any breed: weight, dental, screening — but the starting point is higher.
Whippet age conversion at a glance
| Whippet age | Human-equivalent |
|---|---|
| 1 year | 15 human years |
| 2 years | 24 human years |
| 5 years | 39 human years |
| 7 years | 49 human years |
| 10 years | 64 human years |
| 13 years | 79 human years |
Whippet weight chart
Adult weight for the Whippet typically falls between 25–40 lb (11–18 kg) — placing this breed in the medium breed band per AKC size classification. Weight outside this range warrants a vet conversation about body condition rather than a target weight: BCS 4–5 (a slight visible waist, ribs easily palpable but not visible) is the goal regardless of where in the breed range your individual dog lands.
| Stage | Typical weight (Whippet) | What to watch |
|---|---|---|
| 8 weeks (puppy) | ~5–7 lb | Weight gain trajectory matters more than the absolute number — track weekly. |
| 6 months | ~22–29 lb | Most small breeds at ~75% of adult by 6 months; large breeds at ~55%. |
| 12 months | ~36–40 lb | Small breeds usually fully grown. Large and giant breeds add 10-20% over the next 6-12 months. |
| Adult (12-15 mo+) | 25–40 lb | Hold steady at BCS 4-5. Excess weight directly shortens lifespan (Purina 2002 lifetime study: lean-fed dogs live ~1.8 years longer). |
Stage weights are size-band approximations using growth-curve percentiles from AAHA + Royal Canin breed-data references. Individual dogs vary ±20% from these midpoints. For a more precise current-vs-target trajectory, see the puppy growth calculator or the ideal-weight calculator.
Common health concerns to watch for
- Anesthesia and drug sensitivities — sighthound-typical low body fat and altered drug metabolism; use a sighthound-experienced vet and avoid acepromazine
- Cardiac arrhythmias and adult-onset deafness — both documented breed-typical issues; cardiac auscultation at annual visits from middle age
- Anesthetic sensitivity — low body-fat reserves and sighthound drug clearance shared with Greyhounds; flag the breed before any procedure so the protocol is adjusted
- Skin tears and lacerations — extremely thin skin tears easily on fences, brush, and even rough play; insurance and a vet-stocked first-aid kit help
- Hip and elbow dysplasia in some lines
This is general guidance based on size and breed averages. Always discuss specific concerns with your veterinarian.
Whippet life-stage milestones
Generic puppy/adult/senior bands often miss the breed-specific timing windows for orthopedic development, neuter timing, and senior protocols. The stages below are calibrated for the Whippet:
- 8 weeks (puppy arrival): Communicate breed to vet pre-vaccination - sighthound anesthesia and drug sensitivities apply from day one. Verify CEA and PRA DNA test results. Begin slow introduction to cold weather - thin coat means winter coats are functional.
- 6 months (adolescence): Recall training is largely cosmetic once prey is sighted - long-line or fenced areas only. Begin annual cardiac auscultation. First OFA prelim hip screen. Watch for thin-skin injuries from rough play.
- 1 year (young adult): Skeletally mature at 25-40 lb. Establish baseline cardiac and ophthalmology exams. Avoid acepromazine permanently - flag the breed on every veterinary record. Establish daily sprint exercise routine.
- 3 years (prime adult): Peak racing years. Annual cardiac auscultation. Monitor for skin tears - the breed has notoriously thin skin. Most Whippets remain quiet calm indoor dogs given short bursts of intense exercise.
- 7 years (mature/senior): Senior bloodwork annually. Adult-onset deafness may begin. Cardiac arrhythmias more common. Cancer rates rise. Reduce intensive sprinting but maintain daily exercise - sedentary Whippets decline rapidly.
- 11 years (geriatric): Whippets regularly reach 14-15 years - unusually long for any sighthound. Cognitive dysfunction screening. Mobility support. Quality-of-life focus: cardiac maintenance, warmth, lean body condition.
Similar breeds you might be comparing
- Australian Shepherd — medium breed, 12–15 year lifespan
- Border Collie — medium breed, 12–15 year lifespan
- Cardigan Welsh Corgi — medium breed, 12–15 year lifespan
- Compare two dogs side-by-side →
Sources cited for the Whippet
- American Kennel Club breed standard - Whippet.
- American Whippet Club - cardiac, eye, and racing welfare guidelines.
- Mosher DS, Quignon P, et al. "A mutation in the myostatin gene increases muscle mass and enhances racing performance in heterozygote dogs." PLOS Genetics, 2007.
- O'Neill DG, Church DB, et al. "Longevity and mortality of dogs owned in England." The Veterinary Journal, 2013.
- Orthopedic Foundation for Animals (OFA) - Whippet hip and cardiac databases.
Methodology: AKC size-based formula. See the main dog age calculator for full method comparison (including the Wang epigenetic-clock formula), life-stage guidelines, and citations.
Whippet age FAQ
How long do Whippets live?
Whippets typically live 12–15 years, with a median lifespan around 14 years. Medium-sized breeds like the Whippet have above-average lifespans for the canine size spectrum. The strongest modifiable factor is body condition: dogs kept at BCS 4–5/9 (lean) routinely outlive their average by 1–2 years, while overweight dogs lose a comparable amount. Dental care from puppyhood + annual bloodwork from middle age are the next two highest-leverage longevity inputs.
How old is a 7-year-old Whippet in human years?
Using the AKC size-based method, a 7-year-old Whippet is approximately 49 human years old. Try the calculator above with your dog's actual age and months for a precise answer.
What is the typical lifespan of a Whippet?
Whippets typically live 12–15 years. Whippets sit in the upper longevity tier of dog breeds. The 15-year published range is reached routinely, and individuals past it are documented in breed-club records. The factors that move a Whippet from "average" to "above average" are the same ones that move any breed: weight, dental, screening — but the starting point is higher.
When does a Whippet become a senior?
As a medium-sized breed, a Whippet is generally considered senior at around 8 years old. Senior status signals a shift toward semi-annual veterinary check-ups and closer monitoring for arthritis, dental disease, and weight changes.
Are Whippets long-lived?
Whippets have an average lifespan for their size. Diet, exercise, and dental care are the strongest modifiable factors for longevity.
Are Whippets really good apartment dogs despite being sighthounds?
Counter-intuitively, yes. The Whippet is engineered for short bursts of explosive speed — 40 mph for under a minute — followed by long calm rest, with breed-average sleep clocking in around 18 hours per day. Pair an apartment with 30–45 minutes of daily off-leash sprinting in a fenced area (recall is unreliable once prey is sighted) and you have one of the quietest, calmest indoor breeds available. Cold tolerance is poor — a winter coat is functional, not cosmetic — and harsh training methods backfire badly. The 12–15 year lifespan is genuinely unusual for the lean sighthound build.