Data Storage Converter

Convert bytes, kilobytes, megabytes, gigabytes, terabytes, and more

💡 Tip: Press Ctrl+D for dark mode, Ctrl+K to focus converter

💾 Data Storage Converter

Convert between bits, bytes, kilobytes, megabytes, gigabytes, and more

💡 Quick Tip: 1 GB = 1,024 MB (binary) | 1 byte = 8 bits
1 MB = 0.000977 GB

Data Storage Conversion Guide

Common Data Storage Conversions

From To Multiply By (Binary) Example
Bytes Bits 8 1 B = 8 bits
Bytes Kilobytes ÷ 1,024 2,048 B = 2 KB
Kilobytes Megabytes ÷ 1,024 2,048 KB = 2 MB
Megabytes Gigabytes ÷ 1,024 2,048 MB = 2 GB
Gigabytes Terabytes ÷ 1,024 2,048 GB = 2 TB
Terabytes Petabytes ÷ 1,024 2,048 TB = 2 PB
Kilobytes Bytes × 1,024 1 KB = 1,024 B
Megabytes Kilobytes × 1,024 1 MB = 1,024 KB
Gigabytes Megabytes × 1,024 1 GB = 1,024 MB

Understanding Data Storage Units

Basic Units

Bit (b) - The smallest unit of data. A single binary digit (0 or 1). Used primarily to measure data transfer rates (e.g., Mbps = megabits per second).

Byte (B) - 8 bits. The basic unit of computer storage. Can represent a single character (letter, number, symbol).

Binary System (1024-based) - Computing Standard

Kilobyte (KB) - 1,024 bytes. Traditional computing uses powers of 2 (2¹⁰ = 1,024).

Megabyte (MB) - 1,024 KB = 1,048,576 bytes (2²⁰). Common for document files, images, and songs.

Gigabyte (GB) - 1,024 MB = 1,073,741,824 bytes (2³⁰). Used for movies, games, and storage devices.

Terabyte (TB) - 1,024 GB = 1,099,511,627,776 bytes (2⁴⁰). Large hard drives and cloud storage.

Petabyte (PB) - 1,024 TB = 1,125,899,906,842,624 bytes (2⁵⁰). Data centers and enterprise storage.

Why 1024 Instead of 1000?

Computers use binary (base-2), so storage naturally grows in powers of 2. 2¹⁰ = 1,024 is close to 1,000 and became the standard.

Binary prefixes (IEC standard):

  • KiB (kibibyte) = 1,024 bytes
  • MiB (mebibyte) = 1,024 KiB
  • GiB (gibibyte) = 1,024 MiB
  • TiB (tebibyte) = 1,024 GiB

Decimal System (1000-based) - Marketing

Storage manufacturers often use decimal (base-10) to make capacities appear larger:

  • 1 KB = 1,000 bytes (decimal)
  • 1 MB = 1,000 KB = 1,000,000 bytes
  • 1 GB = 1,000 MB = 1,000,000,000 bytes

This is why a "500 GB" hard drive shows as ~465 GB in Windows!

Practical Data Storage Examples

  • 📄 Text character: 1 byte
  • 📧 Email (plain text): 5-50 KB
  • 📄 Word document: 50-500 KB
  • 📸 Digital photo (JPEG): 2-5 MB
  • 🎵 MP3 song (3 min): 3-5 MB
  • 📱 Mobile app: 50-200 MB
  • 🎬 HD movie (2 hours): 4-8 GB
  • 🎮 Modern video game: 50-150 GB
  • 💿 DVD: 4.7 GB
  • 💿 Blu-ray disc: 25-50 GB
  • 💾 USB flash drive: 16-256 GB
  • 💽 External hard drive: 1-8 TB
  • ☁️ Google Drive (free): 15 GB
  • 📚 Wikipedia (text only): ~20 GB
  • 🌍 Internet traffic (per day): ~2,500 PB

Data Storage Evolution

Medium Capacity Year Introduced
Floppy Disk (5.25") 360 KB - 1.2 MB 1976
Floppy Disk (3.5") 1.44 MB 1987
CD-ROM 700 MB 1985
DVD 4.7 GB 1995
Blu-ray 25-128 GB 2006
USB Flash Drive 256 MB - 2 TB 2000
External HDD 1-20 TB 1990s
SSD 128 GB - 8 TB 2003
Micro SD Card 2 GB - 1 TB 2005

Why Different Data Units?

Different data units evolved for different purposes:

  • 💾 Bit: Fundamental unit - data transmission speeds (Mbps, Gbps)
  • 💻 Byte: Practical computing unit - file sizes, memory
  • 📊 KB/MB/GB: User-friendly sizes for files and storage
  • 🏢 TB/PB: Enterprise and data center scale
  • 📡 Binary (1024): Computer memory and RAM
  • 💾 Decimal (1000): Hard drive and SSD marketing

Data Conversion Formulas

Bytes to Bits:

bits = bytes × 8

Bits to Bytes:

bytes = bits ÷ 8

MB to GB (Binary):

GB = MB ÷ 1,024

GB to MB (Binary):

MB = GB × 1,024

GB to TB (Binary):

TB = GB ÷ 1,024

Quick Mental Math Tips

MB to GB (approximate):

  • Divide MB by 1,000 → Example: 5,000 MB ÷ 1,000 ≈ 5 GB (actual: 4.88 GB)
  • More accurate: divide by 1,024

GB to TB (approximate):

  • Divide GB by 1,000 → Example: 5,000 GB ÷ 1,000 ≈ 5 TB (actual: 4.88 TB)

Bytes to KB:

  • Divide bytes by 1,000 for quick estimate → Example: 50,000 bytes ≈ 50 KB

Remember the 1024 vs 1000 difference:

  • 1,000 GB drive = ~931 GiB (about 7% smaller)
  • This explains why your "1 TB" drive shows as 931 GB!

Bits vs Bytes in Internet Speed

Important Distinction:

  • 📶 Internet speeds: Measured in Mbps (megabits per second) or Gbps (gigabits per second)
  • 💾 File sizes: Measured in MB (megabytes) or GB (gigabytes)
  • 🔢 Conversion: 1 byte = 8 bits, so divide speed by 8 for download rate
  • 📥 Example: 100 Mbps internet = ~12.5 MB/s download speed
  • 🎬 Example: 5 GB movie on 100 Mbps = ~400 seconds (~6.7 minutes)

Storage Device Comparison

Device Type Typical Capacity Speed Use Case
SD Card 16-512 GB 10-100 MB/s Cameras, phones
USB Flash Drive 8-256 GB 20-500 MB/s File transfer
HDD (Hard Drive) 500 GB - 20 TB 80-160 MB/s Bulk storage
SSD (SATA) 250 GB - 4 TB 200-550 MB/s Fast storage
SSD (NVMe) 250 GB - 8 TB 1,500-7,000 MB/s High performance
Cloud Storage 15 GB - Unlimited Varies by internet Backup, sharing

Binary vs Decimal Confusion

Example: Why does a 1 TB drive show as 931 GB?

  • 🏭 Manufacturer (decimal): 1 TB = 1,000,000,000,000 bytes
  • 💻 Operating System (binary): 1 TB = 1,099,511,627,776 bytes
  • 📊 Actual capacity: 1,000,000,000,000 ÷ 1,073,741,824 (bytes per GiB) = 931 GiB
  • ✅ Conclusion: Both are correct, just using different standards!

Frequently Asked Questions

How do I convert MB to GB?

Divide megabytes by 1,024 (binary) to get gigabytes. For example, 2,048 MB ÷ 1,024 = 2 GB. For decimal (manufacturer), divide by 1,000.

How many MB are in 1 GB?

In binary (traditional computing): 1 GB = 1,024 MB. In decimal (storage manufacturers): 1 GB = 1,000 MB. Our converter uses binary (1,024) by default.

What is the difference between KB and KiB?

KB can mean either 1,000 bytes (decimal) or 1,024 bytes (binary) depending on context. KiB (kibibyte) always means exactly 1,024 bytes. The same applies to MB/MiB, GB/GiB, etc.

How many bytes are in a gigabyte?

In binary (computing): 1 GB = 1,073,741,824 bytes (1024³). In decimal (manufacturers): 1 GB = 1,000,000,000 bytes. The difference is about 7.4%.

Why does my 1 TB hard drive show as 931 GB?

Manufacturers use decimal (1 TB = 1 trillion bytes), but operating systems use binary (1 TB = 1,099,511,627,776 bytes). 1 trillion ÷ 1,073,741,824 = 931 GB. You're not losing space - just different counting systems!

What's the difference between Mbps and MB/s?

Mbps = megabits per second (internet speed). MB/s = megabytes per second (download rate). 1 byte = 8 bits, so divide Mbps by 8 to get MB/s. Example: 100 Mbps = 12.5 MB/s.

How accurate is this data converter?

Our converter uses exact binary (1024-based) conversion factors as used by operating systems. Results are accurate up to 10 decimal places.

Quick Reference Chart (Binary)

1 Byte equals:

  • 8 bits
  • 0.0009765625 KB (1/1024 KB)

1 Kilobyte (KB) equals:

  • 1,024 bytes
  • 8,192 bits
  • 0.0009765625 MB (1/1024 MB)

1 Megabyte (MB) equals:

  • 1,024 KB
  • 1,048,576 bytes
  • 8,388,608 bits
  • 0.0009765625 GB (1/1024 GB)

1 Gigabyte (GB) equals:

  • 1,024 MB
  • 1,048,576 KB
  • 1,073,741,824 bytes
  • 0.0009765625 TB (1/1024 TB)

1 Terabyte (TB) equals:

  • 1,024 GB
  • 1,048,576 MB
  • 1,099,511,627,776 bytes
  • 0.0009765625 PB (1/1024 PB)

Common File Sizes:

  • Plain text page: ~2 KB
  • High-res photo: 3-8 MB
  • MP3 song: 3-5 MB
  • HD movie: 4-8 GB
  • 4K movie: 25-100 GB