The number of yards of yarn in 620 grams depends entirely on the unique qualities of the yarn.
First of all, the weight, or thickness, of the yarn can influence the number of yards in a specific number of grams. For instance, 10 yards of laceweight yarn will weigh much less than 10 yards of bulky weight yarn.
Second, the type of fiber of the yarn also needs to be taken into account. Certain fibers, like cotton, bamboo, and silk, tend to be much heavier than fibers like wool or alpaca. Therefore, 10 yards of cotton yarn will weigh more than 10 yards of wool yarn, even if the two yarns are of equal thickness.
Therefore, it is difficult to determine the yardage of your yarn without further information. If you know the fiber and the weight (thickness) of the yarn (such as laceweight, fingering weight, sportweight, worsted, etc.), you can find a yarn with a similar weight and fiber on a website such as yarndex.com and compare its yardage with your yarn. However, this method can get you only an estimate, and is not guaranteed to be accurate.
If you must know specifically how many yards of yarn you have, you can purchase a device that measures it as you spin it into a ball. A Yarn Meter such as this one from knitpicks.com:
http://www.knitpicks.com/accessories/Knitting_Yarn_Meter__D80179.html
can measure exactly how many yards of yarn you have.
Just multiply..... 620 grams x .0353 = 28.9 ozs
620 grams mercury (1 mole Hg/200.6 grams) = 3.09 moles Hg
620 meters=0.385250139 miles
6:20 in EST = 3:20 in PST.
630 g = 1.38891 lb630 g = 1.38891 lb630 g = 1.38891 lb630 g = 1.38891 lb630 g = 1.38891 lb630 g = 1.38891 lb
620 grams = 1.37 pounds
620 feet = 206 2/3 yards
Just multiply..... 620 grams x .0353 = 28.9 ozs
620/200= 3.1
it depends what you are measuring i think.... physics grade 10....lol
620 grams mercury (1 mole Hg/200.6 grams) = 3.09 moles Hg
620 kilograms = 97.63 stone
620 meters=0.385250139 miles
620 PM -- 40 minutes 620 AM -- 12 hours, 40 minutes
The answer depends on the units used for 620. It should be patently obvious that 620 feet is considerably less than 620 light years!
620 meters rounds to about 0.39 miles.
620 cm = 20.341 feet (rounded)