How you know how much will pay for the bandwidth used in a server inside the Cloud?Often cloud services give you a calculator but this is based on Giga Bytes per Month of traffic but normally you measure bandwidth throughput on your server in kbps.
- Install some graphical tool for collection of bandwidth data in your server (like Cacti, Munin, Zabbix ecc.)
- After some time (the longer the better, for statistical purposes) take the average bandwidth consumption, often given in kbps (Kilo Bytes per Second)
- Convert kbps in GB per month and this where this post become useful 🙂
So to convert kbps in GB/Month we can simply obtain a constant from the following logic steps:
- 1kbps = 1KiloBitperSecond
- 1KiloBitperHour = 3600 kbps
- 1KiloBitperDay = 3600*24 kbps
- 1KiloBitperMonth = 3600*24*30 kbps
- 1Bit = 1Byte/8
- 1Kilo = 1Giga/1.000.000
So the constant will be 3600*24*30/8/1.000.000 = 0.324
For example 150kbps of bandwidth will generate 150*0.324=48.6GB per month trafficor conversely, for example 80GB per Month will be 80/0.324 = 246.91 kbps on average throughtput
Therefore the constant is 0.324 and as a rule of thumb you can remember 0.3 or one/third 😉
Fabulous Mindset 
One reply on “Bandwidth: kbps to GB/month conversion”
Hi,Aren’t kilobits a measurement of data transfer speed, as opposed to kilobytes, which is a measurement of file size? If so, wouldn’t the constant be higher?Thanks,Russ
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