by MarkLlama Gestation CalculatorEstimate your llama’s delivery date and track pregnancy stages. Breeding Date ? Select the date of successful breeding (e.g., 2025-04-01). Gestation Period (days) ? Average is 335 days; range is 330–360 days (spring mating may add ~12 days). Calculate ResetEnter the breeding date, then click “Calculate”. JavaScript is disabled. Please enable it to use the calculator.