File Size Unit Converter
Convert between digital storage units: bytes, KB, MB, GB, TB, and PB.
This is a unit conversion tool
This tool converts between storage unit measurements (KB ↔ MB ↔ GB). It does not compress or reduce actual file sizes. Use this to understand how the same storage amount is expressed in different units.
📘 How It Works
Binary (1024) Base
File sizes use powers of 1024: 1 KB = 1024 bytes, 1 MB = 1024 KB, etc. This matches how operating systems and storage actually work.
Base Conversion
Input is first converted to bytes by multiplying by 1024^n where n is the unit's position (0 for bytes, 1 for KB, etc.).
Target Unit Division
Bytes are divided by 1024^n for the target unit. For example, bytes ÷ 1024² = MB, bytes ÷ 1024³ = GB.
Simultaneous Output
All unit representations are calculated and displayed at once, enabling quick comparison across the entire size spectrum.
Smart Formatting
Large values show locale-formatted numbers with thousands separators. Small values use scientific notation for readability.
💡 Common Use Cases
Storage Planning
Compare file and drive sizes. How many 4.7 GB DVDs fit on a 1 TB drive? Convert to compare effectively.
Download Estimates
Convert download speeds (Mbps) to understandable file times. How long to download a 2 GB file at 10 Mbps?
Cloud Storage Management
Convert between units when managing cloud quotas. Compare what 15 GB free storage means in MB for documents.
Photo & Video Estimation
Estimate storage needs: if each photo is 5 MB, how many GB do you need for 1000 photos?
Server Configuration
Convert memory and storage specifications. Configure buffer sizes from KB to appropriate byte values.
Bandwidth Calculations
Convert monthly data caps between GB and TB. Understand what 1 TB monthly limit means for daily usage.