convert MB to GB, is google unit converter wrong?

Question

I use google search engine for all my unit conversions, and now being working on some cloud pricing, I wanted to calculate how many GB would 250,000MB do, and type "kilobyte to byte" in google.

The problem I have is that the google tool gave me 250GB. Now I have always be told 1GB = 1024MB (and not exactly 1000), can someone confirm if I'm wrong ??

Actually, I was rather sure until now that was the base to convert Bytes, but having a hard time believing google would be mistaking (too much trust maybe?) I am in the search of expert opinion.

Of course, the EXACT figure is pretty important for cost projection...

Answer 1

Following the SI standard, 1GB=1000MB and 1MB=1000kB. The units programmers usually call mega- and gigabytes should be called mebi- and gibibytes. See also https://en.m.wikipedia.org/wiki/Mebibyte

Many people keep using mega and giga incorrectly, both because of the long history, and because they don't like how "mebi" and "gibi" sound.