# Convert 1 second delay in 200,000KM to delay in 825 miles?

I would like to know the delay in 825 miles of fiber if there is 1 second of delay in 200,000KM of fiber without counting for re-gen sites?

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## migrated from stackoverflow.comJun 22 '10 at 22:19

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You need help with basic arithmetic? Just pop into the nearest primary school and ask one of the kids. –  John Gardeniers Jun 22 '10 at 22:57

You can calculate

``````825 miles / 200000 km
``````

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You're dividing an imperial distance measurement, by a metric one... 200K KM == 124 274.238 miles –  OMG Ponies Jun 22 '10 at 22:18
@OMG Ponies: Yes, and Google does the unit conversion for you. –  Dennis Williamson Jun 22 '10 at 22:40

If there is 5.0 × 10-9 s / m delay and if 825 miles are equivalent to 1,327,708.8 meters then the delay will be `(5*10^-9)*1327708.8` or 0.006638544 seconds

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0.0066385440025356051588564794616356 seconds

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1 (sec) / 200,000 (KM) = 0.000005 (s / km)

1.609344 (mile in KM) x 825 = 1327.7088 KM

Therefore the delay over 825 miles is 0.006638544 seconds.

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