Data Size Conversions
Convert digital storage units — bits, bytes, KB, MB, GB, TB. Free calculators using binary (1024) factors for files, RAM, and bandwidth planning.
6 units · 5 calculators · reference page (not prioritized for search)
Digital storage is measured in bits and bytes. One byte equals 8 bits. Larger units — kilobytes, megabytes, gigabytes — traditionally use binary prefixes (multiples of 1024) in computing, though marketing sometimes uses decimal (1000) values.
Our data-size converters use the standard binary progression (1 KB = 1024 bytes) common in operating systems and file managers. This helps when comparing download sizes, disk space, or memory specifications.
Quick data size calculator
Data Size Calculator
Popular data size conversions
- Bits to Bytes (utility)
- Bytes to Kilobytes (utility)
- Kilobytes to Megabytes (utility)
- Megabytes to Gigabytes (utility)
- Gigabytes to Terabytes (utility)
Real-world example
Your cloud plan offers 100 GB of storage and a folder report shows 87,423,123,456 bytes used. Converting bytes to gigabytes (÷ 1024³) shows roughly 81.4 GiB used — under your limit with room to spare.
All data size conversions
Data Size units explained
- Bits (bit)
- Also: bits
- Bytes (B) · base unit
- Also: bytes
- Kilobytes (KB)
- Also: kilobytes, kB
- Megabytes (MB)
- Also: megabytes
- Gigabytes (GB)
- Also: gigabytes
- Terabytes (TB)
- Also: terabytes
Frequently asked questions
- How many bytes are in a megabyte?
- In binary (IEC) terms, 1 megabyte = 1,048,576 bytes (1024 × 1024). Some contexts use 1,000,000 bytes (decimal MB).
- What is the difference between bits and bytes?
- A bit is the smallest unit (0 or 1). A byte is 8 bits. Download speeds are often in bits per second; file sizes are usually in bytes.