How much water is needed to raise sea level by 1 meter?

To raise global sea levels by 1 meter, approximately 36 million cubic kilometers (or about 8.6 million cubic miles) of water would be needed. This estimate considers the total surface area of the world's oceans, which is about 361 million square kilometers. Therefore, the volume of water required is derived from multiplying the ocean surface area by the height increase of 1 meter.