When will it be safe to stand a baby by himself?

It's generally safe to let a baby stand with support around 9 to 12 months, as this is when they begin developing the necessary muscle strength and balance. However, most babies can stand unassisted between 12 to 15 months. Always supervise them closely, as they may still stumble or fall while learning to balance. Each child develops at their own pace, so it's important to consider individual readiness.