Convert gigabytes to megabytes instantly using decimal units, where one gigabyte is 1000 megabytes. This is the conversion for breaking a data plan, storage quota, or download size into megabytes, which is handy when you are comparing against per-file sizes or app limits quoted in MB. Type any number of gigabytes and the megabyte value appears live as you type. This page uses the decimal (SI) system that drive manufacturers and internet providers use, so 1 GB equals 1000 MB rather than the binary 1024 MB that some operating systems report, which explains small discrepancies you may notice. Multiplying by 1000 is easy, but the tool keeps large or fractional figures accurate. It runs entirely in your browser, so it is instant, private, and works offline once the page has loaded.