how long does it need for tortoise egg to hatch?

Answer 1

90-120 days I believe.

Answer 2

The following incubation times are average ranges: Tortoises, 70-100 days; box turtles, 60-90 days; water turtles, 60-85 days; and exotic tortoises, 100-160 days. Use these times as a guide; remember, there can be exceptions based on external factors.

Answer 3

This depends on the local conditions and species. For most tortoises, it will generally take 2-3 months, but it can be as little as 20 days or take as much as over 300 days.

Try http://www.tortoisetrust.org for other help.