Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

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?

share|improve this question

migrated from Jun 22 '10 at 22:19

This question came from our site for professional and enthusiast programmers.

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

in a Google search box, and it yields about 0.006638 -- or about 6.6 msec.

share|improve this answer
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

share|improve this answer

0.0066385440025356051588564794616356 seconds

share|improve this answer

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.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.