1 kilometer (km) equals 1000 meter (m). Kilo is the Greek word for 1000.
Thus, 3961 kilometers equals 3'961'000 meters.
By the way: Google can answer questions like this perfecly:
Enter "3961km in m" or even "3961 kilometers in meters" and hit "Search".
49 kilometers = 49,000 meters
2.5 kilometers = 2,500 meters
To change meters to kilometers divide by 1000.7500 divided by1000 is equal to 7.57.5km
There are 1000 meters in one kilometer, so 709 meters is equal to 0.709 kilometers.
5.6 kilometers=5,600 meters
423,000 kilometers is equal to 423,000,000 meters
49 kilometers = 49,000 meters
5 meters = 0.005 kilometers
7 meters = 0.007 kilometers
24 kilometers = 24,000 meters
182 kilometers = 182,000 meters
190 kilometers = 190,000 meters
4.8 kilometers = 4,800 meters
1,200,000 meters = 1,200 kilometers
706.8 kilometers=706,800 meters
9 kilometers=9,000 meters
349 kilometers=349,000 meters