Use this free dog heat cycle calculator to estimate your dog's fertile window, breeding dates, and next expected heat cycle.
Most female dogs enter heat approximately every 6 months, although timing can vary by breed, age, and individual health.
Ovulation often occurs around days 10–14 after the heat cycle begins, making this period the most fertile time for breeding.
Most dogs experience heat cycles about every six months, although some breeds vary.
Many dogs are most fertile between days 10 and 14 after the start of their heat cycle.
A typical heat cycle lasts approximately 2 to 4 weeks.
Yes. Smaller breeds often cycle more frequently, while giant breeds may cycle less often.
The calculator provides estimates based on common canine reproductive timelines. Individual dogs may vary.