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Canine Heat Cycle Calculator
Track your dog’s season stages and predict her next heat cycle. Estimate the proestrus, oestrus, diestrus, and anoestrus phases to help plan care, walks, and breeding schedules.
🐕 Season stage tracker
📅 Next cycle prediction
⚡ Instant results
Heat Cycle Calculator
Track and predict your dog’s season
Last Season
The first day you noticed signs of bleeding or swelling
Cycle Details
days
Typical season lasts 18-21 days
days
Time between the start of one season and the next (typically 5-7 months)
Dog Details
Larger breeds often have longer cycle intervals
Cycle Overview
Your dog’s season timeline
Enter the date your dog’s last season started, then click Calculate to see her season stages and next predicted cycle.