Data Storage Converter
Convert bytes, KB, MB, GB, TB and binary MiB/GiB, plus Mbit/Gbit.
- Upload
- Options
- Download
- ✓ 100% free
- ✓ No sign-up
- ✓ No limits
- 🔒 Files never leave your device
How to: Data Storage Converter
- Type a size.
- Choose the units.
- Read the result.
Storage sizes come in decimal (MB, GB) and binary (MiB, GiB) units, which is why a "1 TB" drive shows less space on your computer. Convert between them and network speeds.
Common uses
- Understand drive capacities.
- Estimate download times from Mbit/s speeds.
- Check file sizes against upload limits.
Tips for best results
- 1 GB = 1,000 MB, but 1 GiB = 1,024 MiB.
- 8 bits = 1 byte.
Decimal vs binary units
Storage makers use decimal prefixes (1 GB = 1,000,000,000 bytes), while Windows and some tools show binary values (1 GiB = 1,073,741,824 bytes). That is why a “1 TB” drive shows about 931 GB in Windows – nothing is missing.
Bits, bytes and internet speed
Internet speeds are quoted in megabits per second (Mbit/s), file sizes in megabytes (MB). Divide by 8: a 100 Mbit/s connection downloads about 12.5 MB per second in ideal conditions, so a 1 GB file takes around 80 seconds.
Why use FreePDF for Data Storage Converter?
| FreePDF | Typical upload-based sites | |
|---|---|---|
| What you type is sent to a server | No – stays in your browser | Often |
| Sign-up required | Never | Often for bigger jobs |
| Hourly / daily task limits | None | Common on free plans |
| Works offline after loading | Yes, for most tools | No |
Frequently asked questions
Why does my drive show less space?
Manufacturers use decimal units while many operating systems display binary units.
Is a megabit the same as a megabyte?
No. One byte is 8 bits, so 1 MB = 8 Mbit.
Is Data Storage Converter really free?
Yes. Every tool on FreePDF is 100% free with no file limits, no sign-up and no watermarks. The site is supported by unobtrusive ads.
Are my files uploaded to a server?
No. FreePDF processes your files directly in your browser using JavaScript. Your documents never leave your device, so they stay completely private.
Does it work on mobile?
Yes. FreePDF works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux.