1. Enter a value
Type a number in the input field. You can use a period or comma as the decimal separator.
Convert bytes, KB, MB, GB, TB
This converter converts between byte units. Enter a value in any unit and see all other units instantly.
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When do you need to convert bytes?
Digital storage is measured in bytes and its multiples: kilobytes (KB), megabytes (MB), gigabytes (GB), and terabytes (TB). There are two systems: decimal (1 KB = 1,000 bytes) and binary (1 KiB = 1,024 bytes).
Storage manufacturers use decimal units (a "500 GB" drive = 500,000,000,000 bytes), while operating systems often use binary units (showing ~465 GiB for the same drive). This discrepancy is a common source of confusion.
File sizes, RAM, network speeds, and storage capacity all use different conventions. This converter handles both systems to eliminate confusion.
All calculations run locally in your browser — nothing is sent to any server.
How to use the converter?
2. Read the result
The conversion result appears instantly in the field next to it – no clicking required.3. Copy or reverse
Click Copy result or use the Reverse button to convert in the opposite direction.
When is this converter useful?
Disk Capacity
A 1 TB drive (manufacturer) = 931 GB in the binary system.Upload Limits
Email attachment: 25 MB = 26,214,400 B.Servers
Capacity planning: RAM, storage, bandwidth.Device Storage
Phone 128 GB = 137,438,953,472 B.
What makes this converter different?
Complete privacy
All calculations run locally in your browser. No data is sent to any server.Real-time results
The result updates instantly as you type – no need to click any button.Bidirectional conversion
The Reverse button lets you convert in both directions with one click.Reference table
A ready-made table with commonly converted values and contextual descriptions.
How does byte conversion work?
In the decimal (SI) system: 1 KB = 1,000 bytes, 1 MB = 1,000 KB, 1 GB = 1,000 MB, 1 TB = 1,000 GB. Each step multiplies by 1,000.
In the binary (IEC) system: 1 KiB = 1,024 bytes, 1 MiB = 1,024 KiB, 1 GiB = 1,024 MiB, 1 TiB = 1,024 GiB. Each step multiplies by 1,024.
The difference grows with size: 1 TB (decimal) = 0.909 TiB (binary). A "2 TB" drive shows as approximately 1.82 TiB in most operating systems.
Practical tips
- A typical photo (12 MP): 3–5 MB. A 256 GB phone holds ~50,000–85,000 photos.
- A typical song (MP3): 3–5 MB. A 1 GB playlist contains ~200–300 songs.
- A Full HD movie: 4–8 GB. A 4K movie: 15–30 GB.
- 1 Mbps = 125 KB/s. A 100 Mbps connection downloads at ~12.5 MB/s.
Decimal vs Binary units – comparison
| Feature | Decimal (SI) | Binary (IEC) |
|---|---|---|
| Multiplier | 1,000 | 1,024 |
| Units | KB, MB, GB, TB | KiB, MiB, GiB, TiB |
| Used by | Storage manufacturers | Operating systems, RAM |
| 1 TB equals | 1,000,000,000,000 bytes | 1,099,511,627,776 bytes |
| Difference at 1 TB | 1 TB | 0.909 TiB |
Decimal (SI)
- Multiplier
1,000 - Units
KB, MB, GB, TB - Used by
Storage manufacturers - 1 TB equals
1,000,000,000,000 bytes - Difference at 1 TB
1 TB
Binary (IEC)
- Multiplier
1,024 - Units
KiB, MiB, GiB, TiB - Used by
Operating systems, RAM - 1 TB equals
1,099,511,627,776 bytes - Difference at 1 TB
0.909 TiB
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Frequently asked questions
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