There are several problems with your question: (a) The ambiguity of the word "World" - do you mean planet Earth? Or the Universe? I will assume you mean planet Earth. (b) Ton is a measure of mass, not of weight. A related problem is that it doesn't make much sense to talk about the "weight" of a planet, since weight implies the gravitational force between two objects.
The mass of planet Earth is about 6 x 1024 kg. That is equivalent to 6 x 1021 tonnes.
500 metric tons.
No. One kiloton equates to 12,500 metric tons.
weight
The conversion factor between metric tons (t) and kilograms (kg) is 1,000. This means that 1 metric ton is equal to 1,000 kilograms. To convert from metric tons to kilograms, you multiply the weight in metric tons by 1,000. To convert from kilograms to metric tons, you divide the weight in kilograms by 1,000.
To convert metric tons (tonnes) to net tons, simply divide the metric tons by 1.10231. This will give you the equivalent weight in net tons. For example, 10 metric tons is approximately equal to 9.07 net tons.
The Blue Whale can weigh about 150-170 metric tons
"6000T" typically refers to a weight measurement where "T" stands for metric tons. Therefore, 6000T would indicate a weight of 6000 metric tons.
The weight averages about 2.5 metric tons (2.75 tons) each. The heaviest block is around 15 metric tons (16.5 tons).
When referring to weight in tons, it is generally measured in short tons (2,000 pounds) or metric tons (1,000 kilograms). The weight of an object in tons would indicate how many tons it weighs, whether it is in short tons or metric tons.
One metric tonne - they are both the same weight !
2.2 thousand metric tons
i say it is about 8.5 metric tons (9.4 short tons)