💾 MB to GB Converter
Convert megabytes to gigabytes instantly, using either the decimal (1000-based) or binary (1024-based) storage standard.
MB to GB: Two Different Standards
Digital storage can be measured two ways. The binary standard (used by operating systems like Windows) treats 1 gigabyte as 1024 megabytes, since computers work in powers of two. The decimal standard (used by hard drive manufacturers and network speeds) treats 1 gigabyte as a clean 1000 megabytes.
How This Calculator Works
Pick the standard that matches your context, enter a value in megabytes, and the calculator divides by 1024 or 1000 accordingly to give you gigabytes, along with the equivalent in terabytes and kilobytes.
- Binary: GB = MB ÷ 1024
- Decimal: GB = MB ÷ 1000
This mismatch between standards is why a “1 TB” hard drive often shows less than 1000 GB of usable space in your operating system.