Cats • pregnancyVerified Scientific Formula
Cat Pregnancy & Queening Due Date Calculator
Computes estimated queening date and key fetal developmental stages for pregnant female cats.
Enter Parameters
Calculated Output
Estimated Time to Queening
35Days Remaining46% Completed
What This Result Means
On Day 30 of ~65. Ensure queen has a quiet, comfortable nesting box prepared.
Calculation Details & Practical Equivalents
Gestation Progress
46%
Days Completed
30 days
Expected Window
Days 63 – 67
Formula & Mathematical Methodology
Standard Mathematical Formula
Feline Gestation = 65 Days Average from Mating (Range: 63 to 67 days)
Formula Variables Defined
DaysDays Since Mating(days)
Days elapsed
Step-by-Step Calculation Example
Example: 65-Day Feline Gestation
- Average feline gestation = 65 days
- Estimated 35 days until queening
Final Output: Day 30 of 65 — Second Trimester (Abdominal palpation window)
Key Assumptions
- Breeding date accurately recorded.
Biological Limitations
Verified Scientific & Veterinary Sources
Version: 1.0•Methodology Reviewed: 2026-01-15
1. The Merck Veterinary Manual (11th Edition)textbook
Aiello, S.E. and Moses, M.A. (Eds.) (2020). Merck & Co., Inc., Kenilworth, NJ
Access Source Authority Cat Pregnancy & Queening Due Date Calculator — FAQs
Cats are pregnant for an average of 65 days (ranging between 63 and 67 days).