🐑 Sheep Gestation Calculator
Estimate how many days are left until a ewe lambs based on the average 147-day sheep gestation period.
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What This Calculator Does
This calculator estimates how many days remain until a ewe (female sheep) is due to lamb, based on days elapsed since breeding and the average sheep gestation length.
The Method
Sheep gestation averages about 147 days, typically ranging from 144 to 152 days depending on breed, litter size, and individual variation. This calculator subtracts days already elapsed from the 147-day average to estimate days remaining, and shows overall gestation progress as a percentage.
- Enter the number of days since the ewe was bred (or last confirmed breeding date).
- Results are general planning estimates, not a substitute for veterinary or flock management monitoring.
Because ewes carrying multiples (twins or triplets) often lamb slightly earlier than the average, treat the estimated date as a window and watch for physical signs as the date approaches.
Last reviewed August 2026