Bytes / KB / MB / GB / TB Converter
Enter a value and select a unit to see all conversions instantly.
Data Size Converter
Binary vs Decimal
Common File Sizes Reference
| Example | Approximate Size | Bytes (Binary) |
|---|---|---|
| Plain text email | 2 KB | 2,048 |
| MP3 song (4 min) | 4 MB | 4,194,304 |
| HD photo (JPEG) | 5 MB | 5,242,880 |
| 1-hour podcast | 60 MB | 62,914,560 |
| HD movie (720p) | 1.5 GB | 1,610,612,736 |
| 4K movie | 20 GB | 21,474,836,480 |
| OS installation | 5–20 GB | — |
| Full hard drive | 1 TB | 1,099,511,627,776 |
How Do I Convert Between KB, MB, GB, and TB?
Enter a value in any unit — bytes, kilobytes, megabytes, gigabytes, or terabytes — and the tool instantly shows the equivalent in all other units. It uses the standard binary conversion where 1 KB = 1024 bytes. Results update in real time.
What Is the Difference Between KB and KiB?
In computing, there are two conventions: the binary system (1 KB = 1024 bytes, used by operating systems) and the decimal system (1 KB = 1000 bytes, used by storage manufacturers). This tool uses the binary standard. The IEC introduced KiB, MiB, GiB to avoid ambiguity, but KB/MB/GB remain more common in practice.
When Do I Need to Convert Data Sizes?
Data size conversion is useful when estimating storage needs, calculating upload and download times, comparing file sizes to storage capacity, understanding cloud storage plans, configuring server resources, and interpreting bandwidth metrics. Developers, IT professionals, and general users all benefit from quick size conversions.
How Big Is a Gigabyte in Real Terms?
A gigabyte holds roughly 250 MP3 songs, 300 high-resolution photos, one standard-definition movie, or about 500,000 pages of text. A terabyte is 1024 gigabytes and can store approximately 250,000 photos or 500 hours of video. This tool helps you convert between all these scales instantly.
How Do I Estimate File Download Times?
To estimate download time, divide the file size in megabits by your connection speed in megabits per second. One megabyte equals 8 megabits. So a 100 MB file on a 50 Mbps connection takes about 100 × 8 / 50 = 16 seconds. This converter helps you quickly switch between bytes, kilobytes, megabytes, and gigabytes when working with storage, bandwidth, and transfer calculations.