How far a long to tell gender on unborn baby?

Gender can typically be determined via ultrasound around 18 to 20 weeks into the pregnancy, when the baby is sufficiently developed for clear imaging. Some blood tests, such as non-invasive prenatal testing (NIPT), can identify the baby's sex as early as 10 weeks. However, the accuracy of these methods can vary, and it’s always best to consult with a healthcare provider for the most reliable information.