At what age can babies have no support under their arms to stand?

9-13 months. Babies start taking their first steps around 10-14 months of age. They usually can stand alone the month before they start walking.
11-12 months. Babies usually stand alone at 11- 12 months. Some babies can stand earlier and some stand later.
9-12 months. Most babies can stand without support by 9-12 months of age, but this depends on many factors, such as prematurity and other motor skills. In general the more time an infant spends on the tummy learning to lift his head and strengthen muscles of the neck early on (not sleeping!) and then sitting and developing trunk muscles & having opportunity to pull up on things, the earlier they will develop.