— Tools
Practical calculators for the dairy.
Free tools for feeding, stock days of cover, breeding, calving, and keep-or-cull decisions. Same planning numbers DairyLogs uses on the herd — 280-day gestation, a 21-day heat cycle, and income over feed. Educational only; not a substitute for a veterinarian or nutritionist.
Feed · /tools/cow-feed-calculator
Cow feed calculator
Daily ration amounts for purebred and crossbred dairy heifers and milking cows — calf starter, milk, concentrate, silage, and minerals.
Open tool →Feed · /tools/feed-inventory-calculator
Feed inventory calculator
Enter current stock, daily consumption per animal, and head count to see how many days the feed will last.
Open tool →Breeding · /tools/cow-pregnancy-due-date-calculator
Cow pregnancy due date calculator
Enter the AI or natural-service date to get an expected calving date, days remaining, and a pregnancy-check reminder.
Open tool →Breeding · /tools/heat-detection-calculator
Heat detection calculator
Enter the last heat date to get the next 18–24 day watch window and the most likely return-heat day.
Open tool →Calving · /tools/calving-date-calculator
Calving date calculator
Turn a service date into an expected calving date plus a 30-, 14-, and 7-day preparation timeline.
Open tool →Herd · /tools/culling-decision-calculator
Culling decision calculator
Compare milk income, feed, veterinary cost, open days, and lactation number to see whether keeping the cow still makes economic sense.
Open tool →