Which has a larger volume of water: a swimming pool or an ocean?

An ocean has a much larger volume of water than a swimming pool.

Explanation:

A swimming pool usually holds anywhere between 50,000 liters to 2.5 million liters of water, depending on its size. Even Olympic-sized pools, which are among the largest, can hold about 2.5 million liters (2,500 cubic meters) of water.

In comparison, the oceans cover about 71% of the Earth’s surface and have an average depth of 3.7 km. Altogether, Earth’s oceans contain roughly 1.35 billion cubic kilometers of water.

To understand how big that is:

• 1 Olympic swimming pool = 2,500 cubic meters
• 1 cubic kilometer = 1,000,000,000 cubic meters

So, 1 cubic kilometer of ocean water = 400,000 Olympic swimming pools!

Therefore, when comparing the two, a swimming pool is tiny, while an ocean holds an unimaginably huge volume of water.

Conclusion:
The ocean has a far larger volume of water than a swimming pool — in fact, the difference is so vast that even millions of swimming pools together cannot equal the water in a small fraction of the ocean.