How Much Helium Is Needed to Lift 10 Pounds?


Quick Answer

One cubic foot of helium can lift 0.062 pound, so 161.3 cubic feet of helium is needed to lift 10 pounds. A balloon containing this amount of helium must be approximately 6.75 feet in diameter at sea level.

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How Much Helium Is Needed to Lift 10 Pounds?
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Full Answer

Helium is a heavier but more stable lifting gas than hydrogen, which it replaced. One major problem with hydrogen gas is that it is extremely flammable. The German blimp Hindenburg, filled with approximately 6 million cubic feet of hydrogen, caught fire in 1937 as it was attempting to land in New Jersey. The resulting fire killed 36 people and was captured on film.

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