Data Size Converter — MB, GB, TB, MiB, GiB | ConverterPilot
Enter a value above to see conversions
| Unit | Symbol | Value |
|---|---|---|
| Bit | b | — |
| Byte | B | — |
| Kilobyte | KB | — |
| Megabyteinput | MB | — |
| Gigabyte | GB | — |
| Terabyte | TB | — |
| Petabyte | PB | — |
Why does my 500 GB drive show less space in Windows?
Hard drive manufacturers use decimal GB (1 GB = 1,000,000,000 bytes), but operating systems like Windows report storage in binary GiB (1 GiB = 1,073,741,824 bytes). A drive labelled 500 GB actually contains only about 465 GiB — which is what Windows shows as "465 GB". No storage is missing; it is just a unit difference.
Quick Reference
1 KB = 1,000 bytes | 1 KiB = 1,024 bytes
1 MB = 1,000 KB | 1 MiB = 1,024 KiB
1 GB = 1,000 MB | 1 GiB = 1,024 MiB
1 TB = 1,000 GB | 1 TiB = 1,024 GiB
1 Byte = 8 Bits
1 GB ≈ 0.931 GiB
About This Tool
The Data Size Converter lets you instantly convert between all common digital storage units — Bits, Bytes, KB, MB, GB, TB, PB — and their binary IEC equivalents (KiB, MiB, GiB, TiB). Toggle between Decimal (SI) and Binary (IEC) modes, enter your value, choose a unit, and see a full conversion table update instantly. Perfect for understanding file sizes, storage capacity, RAM specs, and networking throughput.
How to Use
- Choose Decimal (SI) for hard drive / network units, or Binary (IEC) for RAM / OS file sizes.
- Type your number in the Value field and select the source unit from the dropdown.
- Read off any target unit from the instant conversion table — all rows update in real time.