About this tool
This MB to GB converter (data size converter, KB MB GB TB calculator) turns a file or storage size into every other unit at once.
Pick the starting unit, type a value and choose the base: 1000 (SI, used by drive makers and phones) or 1024 (binary, common in Windows and RAM).
For example, 5,000 MB is 5 GB with the 1000 base but about 4.88 GB with the 1024 base, and 1 TB is 1,000 GB or 1,024 GB. Why does my 256 GB drive show less space?
The maker counts 1 GB as 1,000,000,000 bytes, while Windows divides by 1,024 three times, so the same drive looks about 7% smaller. How many MB are in 1 GB? 1,000 MB (SI) or 1,024 MB (binary). Which base should I use?
Use 1000 for storage labels, data plans and downloads, and 1024 when matching what your computer or memory shows. Units run B, KB, MB, GB, TB and PB, and results are rounded to six decimals.
Bits are not included, and 1 byte equals 8 bits, so internet speeds in Mbps need dividing by 8. Very large values switch to scientific notation. Everything is calculated in your browser.
For other conversions, see the unit converter or the length converter.
How to use
- Type the size you want to convert.
- Pick the starting unit and the base, 1000 (SI) or 1024.
- Read the value in every other unit and copy or share it.