Breeding & calving
Cattle breeding hub
Plan breeding windows, calving dates, pregnancy milestones, scrotal circumference, and bull turnout capacity. Start from a target calving date, an AI service date, or a breeding season window — then carry dates into gestation and ranch weather actions.
Primary calculators
- Gestation Calculator
When will my cow calve based on breeding date?
- Calving Date
When should I breed — or when will she calve?
- Breeding Date
What are the heat cycle and pregnancy check dates for my cows?
- AI Breeding Timing
When should I AI this cow relative to heat or a sync protocol?
- Bull BSE Planner
Is this bull ready for turnout, and how many cows should he cover?
- Adj. 365 SC
What is this bull’s adjusted 365-day scrotal circumference?
- Bull Cost / Calf
What is the true cost of a breeding bull per calf weaned over his lifetime?
Guides & charts
See all seven systems on cattle ranch systems or browse the full breeding & calving category.
Frequently asked questions
Should I use reverse or forward calving planning?+−
Use reverse when you know the target calving window and need bull turnout or AI dates. Use forward when you already have a breeding or AI service date and need expected calving, preg-check timing, and days remaining.
How do AI timing and gestation tools connect?+−
Pick a protocol on the AI timing calculator — it shows an inline calving preview, then deep-links into the gestation calculator and chart with the service date and breed prefills.
Is this veterinary breeding advice?+−
No. These are educational planning tools. Follow your veterinarian’s labeled AI protocols, pregnancy diagnosis guidance, and herd health program.