File Size Converter
Convert between bytes, KB, MB, GB, TB and more. Supports both decimal (1000) and binary (1024) standards.
file pdf
file sizeconvertbyteskbmb
How It Works
Result
—
All Conversions
| Unit | Value |
|---|---|
| Enter a value to see all conversions | |
Understanding File Size Units
Decimal (SI) Units
Based on powers of 1000. Used by storage manufacturers.
- 1 KB = 1,000 bytes
- 1 MB = 1,000 KB = 1,000,000 bytes
- 1 GB = 1,000 MB
- 1 TB = 1,000 GB
Binary (IEC) Units
Based on powers of 1024. Used by operating systems (Windows, Linux, macOS).
- 1 KiB = 1,024 bytes
- 1 MiB = 1,024 KiB = 1,048,576 bytes
- 1 GiB = 1,024 MiB
- 1 TiB = 1,024 GiB
Example: A 500 GB hard drive (decimal) shows as ~465 GiB (binary) in your OS. Both are correct — they just use different standards.
All calculations happen locally in your browser. No data is sent to any server.
How to Use
- Select or drag and drop your file(s) into the upload area
- Adjust settings if available (quality, dimensions, etc.)
- Click the process/convert button
- Download the result
Features
- Completely free - no registration required
- Processed locally in your browser - files never uploaded
- Works offline once loaded
- Supports multiple file formats
- Fast processing with no server delays
Advertisement
Ad placeholder - replace with real ad network
Frequently Asked Questions
What's the difference between KB and KiB?
KB = 1000 bytes (decimal/SI). KiB = 1024 bytes (binary/IEC). Same for MB/MiB, GB/GiB.
Which standard should I use?
Storage manufacturers use decimal (KB, MB, GB). Operating systems often show binary (KiB, MiB, GiB).