Data storage converter
Storage capacity is measured in two systems — SI decimal (powers of 1000) and binary/IEC (powers of 1024). This converter handles both and shows the full conversion table.
Result
—
| Unit | Value |
|---|
Copied!
SI decimal vs binary
| SI unit | Value | Binary unit | Value |
|---|---|---|---|
| 1 KB | 1,000 B | 1 KiB | 1,024 B |
| 1 MB | 1,000,000 B | 1 MiB | 1,048,576 B |
| 1 GB | 10⁹ B | 1 GiB | 2³⁰ B |
| 1 TB | 10¹² B | 1 TiB | 2⁴⁰ B |
Example
1 GB to MB: 1 × 1,000 = 1,000 MB
1 GiB to MiB: 1 × 1,024 = 1,024 MiB
Frequently asked
What is the difference between KB and KiB?
KB (kilobyte) = 1,000 bytes (SI decimal). KiB (kibibyte) = 1,024 bytes (binary/IEC). Hard drives use decimal KB; operating systems often display binary KiB, which causes apparent size discrepancies.
How many bytes in a gigabyte?
1 GB = 1,000,000,000 bytes (10⁹). 1 GiB = 1,073,741,824 bytes (2³⁰). A 1 TB hard drive holds 1,000 GB but shows as roughly 931 GiB in Windows.
What is a bit vs a byte?
A bit is the smallest unit of data — a 0 or 1. A byte is 8 bits and can represent 256 values (0–255).
How big is a petabyte?
1 PB = 1,000 TB = 1,000,000 GB. At 1 Gbps download speed, downloading 1 PB would take about 93 days.
How do I share my conversion?
Click "Share with my numbers" to copy a URL with your units and value.