After the new moon, how long does it take approximately for the full moon to appear?

After the new moon, it takes approximately 14.8 days or 2 weeks for the full moon to appear. The time from the new moon to the full moon is referred to as the waxing phase, during which the illuminated portion of the moon visible from Earth gradually increases. The entire lunar cycle, from one new moon to the next, lasts about 29.5 days.