Data Size Converter
Convert data size between Byte, KB, MB, GB, TB, PB units.
Input Information
Result
Data Size Converter is an essential tool that helps convert between various data storage units used in computers. You can check accurate conversion results between Byte, Kilobyte (KB), Megabyte (MB), Gigabyte (GB), Terabyte (TB), and Petabyte (PB) at a glance.
It allows you to quickly compare and convert multiple units when calculating data throughput, file sizes, storage space, and more, making it useful in web development, data analysis, system management, cloud computing, and various other fields.
In the digital world, the amount of data is growing exponentially. From 1KB text files to data center storage capacities reaching several PB, accurate unit conversion plays a key role in IT infrastructure planning and cost estimation.
This converter uses Binary standard (1KB = 1,024 Byte) and simultaneously shows conversion results to all units for the entered value. It can be immediately utilized in various situations such as purchasing storage devices, choosing cloud services, and transferring large files.
Term Glossary
- Binary Standard
- Computers use binary, so 1KB = 1,024 (2^10) Byte. The operating system and most software use this standard.
- Decimal Standard
- Storage device manufacturers label 1KB = 1,000 (10^3) Byte. This is why actual usable capacity feels smaller than the displayed capacity.
- Choose the input unit (B, KB, MB, GB, TB).
- Enter the value to convert.
- Choose the output unit.
- Press convert to see the result.
GB → MB Conversion
1 GB = 1,024 MB.
MB → GB Conversion
2,048 MB = 2,048 ÷ 1,024 = 2 GB.
TB → GB Conversion
5 TB = 5 × 1,024 = 5,120 GB.
Data Size Unit Conversion Formula
Core Concepts
Binary vs Decimal
Computers use binary so 1KB = 1,024 Byte. However, hard disk manufacturers use 1KB = 1,000 Byte (decimal), which can make actual storage capacity feel smaller than displayed.
File Size Reference
Webpage: approx. 2~5MB / HD movie (1080p): approx. 4~8GB / 4K movie: approx. 15~50GB / 1 hour 4K video: approx. 20GB
Storage Device Capacity Reference
- USB: 32~256GB
- SSD: 256GB~4TB
- HDD: 1~20TB
- Cloud: TB~PB range
Use Cases
- Web Development: Image optimization, resource compression capacity calculation
- Database: Backup capacity, storage expansion planning
- Cloud: Storage service plan selection
- Backup: Required backup storage capacity estimation
QWhat is the difference between binary (1024) and decimal (1000)?
Computers use powers of two, so 1 KB = 1,024 bytes (binary). In contrast, storage manufacturers often use 1 KB = 1,000 bytes (decimal), so the same capacity can be shown with different numbers.
QHow do GB and GiB differ?
GB is 1,000,000,000 bytes (decimal), while GiB is 1,073,741,824 bytes (binary). 1 GiB ≈ 1.074 GB, and operating systems often display GiB but call it GB.
QWhy does storage show less capacity than advertised?
Manufacturers list capacity in decimal (1 GB = 1,000 MB), but operating systems calculate and display in binary (1 GB = 1,024 MB), so the displayed capacity appears smaller than advertised.
QWhat is the difference between a bit and a byte?
A bit is the smallest unit of information representing 0 or 1, and a byte consists of 8 bits. File sizes are usually shown in bytes, while network speeds are often shown in bits (e.g., Mbps).
QHow do I convert between data units?
Divide by 1,024 to go to a larger unit and multiply by 1,024 to go to a smaller unit. For example, 2,048 MB divided by 1,024 equals 2 GB.