calculatorsonline.co.uk
Lambing Date Calculator
Enter your tupping date to calculate the expected lambing date, pregnancy scanning window, housing date, and full pre-lambing management timeline for your flock.
π 147-day gestation
π
Full timeline
π΄σ §σ ’σ ³σ £σ ΄σ Ώ UK farming calendar
β‘ Instant results
Lambing Calculator
Calculate your lambing dates and management windows
Tupping Details
Date the ram was put in with the ewes
days
Average is 147 days (range: 144β152 depending on breed)
Selects typical gestation for your breed
Flock Details
ewes
Total ewes put to the ram
%
Lambs born per 100 ewes (UK average 150β200%)
Additional Options
Lambing Summary
Your flock management calendar
Enter your tupping date, breed, and flock details, then click Calculate lambing dates to see your full management timeline.