How many balloons does it take to lift you up?

The number of balloons needed to lift a person depends on the weight of the individual and the lifting capacity of the balloons. A standard party balloon can lift about 14 grams (0.5 ounces) when filled with helium. For example, if a person weighs 70 kg (about 154 pounds), it would take around 5,000 balloons to lift them off the ground. However, this is a rough estimate and can vary based on balloon size and environmental factors.