1. Enter a value
Type a number in the input field. You can use a period or comma as the decimal separator.
Convert bytes to KB, MB, GB, TB – binary and decimal
See any storage value in all units at once: bytes, KB, MB, GB, TB — both binary and decimal. No registration required.
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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?
Cloud Storage Plans
AWS S3 charges per GB stored. Google Drive offers 15 GB free, iCloud starts at 50 GB ($0.99/mo). Convert to understand exactly what you're paying for.File Attachment Limits
Slack allows 1 GB per file. Gmail caps at 25 MB. GitHub LFS limit is 1 GB free (5 GB paid). Convert before uploading to avoid rejected transfers.Docker and npm Packages
Docker image sizes are shown in MB. npm packages report bundle size in KB. Knowing the byte equivalents helps you spot bloated dependencies early.Drive Size Discrepancy
A 1 TB drive shows as ~931 GiB in Windows and macOS. Manufacturers use decimal (1 TB = 1,000 GB), operating systems use binary (1 TiB = 1,024 GiB). This tool shows both.
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.
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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
Explore other unit converters
Frequently asked questions
How many MB is 1 GB?
1 GB = 1,000 MB (decimal) or 1 GiB = 1,024 MiB (binary). Hard drive manufacturers use decimal, while operating systems like Windows and macOS report in binary.
Why does my drive show less space than advertised?
Manufacturers use decimal units (1 TB = 1,000,000,000,000 bytes) but your OS uses binary units (1 TiB = 1,099,511,627,776 bytes). A "1 TB" drive shows as ~931 GiB in Windows. No space is missing — it's a unit mismatch.
How many bytes is 1 KB?
1 KB = 1,000 bytes (decimal/SI). 1 KiB = 1,024 bytes (binary/IEC). Networking and storage specs typically use decimal KB; RAM and operating system memory reports use binary KiB.
What is the difference between MB and MiB?
1 MB = 1,000,000 bytes (decimal). 1 MiB = 1,048,576 bytes (binary). The difference is about 4.86%. For a 100 MB file, that's roughly 5 MB of discrepancy — enough to matter when checking cloud storage limits.
How many photos fit in 1 GB?
Approximately 200–300 JPEG photos at 3–5 MB each (12 MP smartphone). RAW files (25–50 MB each) fit 20–40 per GB. Video at 4K/30fps takes about 375 MB per minute.
What is GitHub LFS and how many bytes can I store?
GitHub LFS (Large File Storage) gives each free account 1 GB of storage and 1 GB of monthly bandwidth. Paid plans start at 50 GB. 1 GB = 1,073,741,824 bytes in binary.
How big can a Docker image be?
Docker Hub has no hard image size limit but recommends keeping images under a few hundred MB. Alpine-based images can be under 10 MB; full Ubuntu images are typically 70–100 MB; Node.js images often reach 300–900 MB.
Are calculations done locally?
Yes. All calculations run in your browser. No data is sent to any server.
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