1,073,741,824
B
1,048,576
KB
1,024
MB
1
GB
0.0009765625
TB
0.000000953674316
PB
1,073,741,824
B
1,048,576
KB
1,024
MB
1
GB
0.0009765625
TB
0.000000953674316
PB
The Data Storage Converter provides instant conversion between all major digital storage units — from bytes to petabytes. Whether you need to convert GB to MB for file size comparison, TB to GB for hard drive capacity, or KB to bytes for network programming, this tool delivers precise results immediately.
Digital data storage uses a binary prefix system where each unit is 1,024 (2¹⁰) times the previous, rather than 1,000. This means: 1 KB = 1,024 bytes, 1 MB = 1,024 KB = 1,048,576 bytes, and 1 GB = 1,024 MB = 1,073,741,824 bytes. This binary convention (IEC binary prefixes: KiB, MiB, GiB) is used by operating systems and this converter.
Note that hard drive manufacturers often use decimal prefixes (1 KB = 1,000 bytes) in their marketing, which is why a 1 TB drive shows as about 931 GB in an operating system. Understanding this distinction is important for accurate storage planning, software development, and network administration.
All values are converted to bytes (the base unit), then converted to each output using powers of 1,024.
Conversion factors (binary):
$$MB = \frac{bytes}{1{,}048{,}576}$$
$$GB = \frac{bytes}{1{,}073{,}741{,}824}$$
These large numbers come from the binary nature of computing — each doubling corresponds to one additional binary digit (bit), which is why storage scales by powers of 2 rather than powers of 10.
Reference sizes for context: a plain-text email is a few KB. A high-resolution photo is 3–10 MB. A 4K movie file is 50–100 GB. A modern smartphone holds 64–512 GB. A laptop hard drive is 500 GB to 4 TB. An enterprise server might use 10–100 TB. The world's total internet traffic exceeds thousands of petabytes per day. When comparing storage capacities, always verify whether binary (1,024) or decimal (1,000) prefixes are being used.
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A standard 4.7 GB DVD (decimal) holds 4,812.8 binary MB — note the difference between manufacturer's decimal GB and operating system binary reporting.
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500 MB equals approximately 0.488 GB (binary). If your data plan shows 500 MB and you have a 1 GB limit, you have used about 48.8% of your allowance.
In binary (IEC standard): 1 GB = 2³⁰ = 1,073,741,824 bytes. In decimal (SI/marketing): 1 GB = 10⁹ = 1,000,000,000 bytes. Operating systems (Windows, macOS, Linux) use binary GB, while hard drive manufacturers use decimal GB. This is why a '1 TB' hard drive appears as approximately 931 GB in Windows.
Each unit is 1,024 times larger than the previous (binary): 1 KB = 1,024 B, 1 MB = 1,024 KB, 1 GB = 1,024 MB, 1 TB = 1,024 GB, 1 PB = 1,024 TB. These prefixes come from the binary nature of computer memory, where sizes are powers of 2 (1,024 = 2¹⁰).
A bit is the smallest unit of digital data (0 or 1). A byte = 8 bits. Internet speeds are typically measured in megabits per second (Mbps), while storage is in megabytes (MB). To convert: divide Mbps by 8 to get MB/s. A 100 Mbps connection downloads at approximately 12.5 MB/s.
Hard drive manufacturers advertise in decimal gigabytes (1 GB = 1,000,000,000 bytes), while operating systems report in binary gigabytes (1 GB = 1,073,741,824 bytes). So 1 'decimal TB' = 1,000,000,000,000 bytes ÷ 1,073,741,824 ≈ 931 'binary GB'. This ~7% discrepancy grows with drive size.
A petabyte (PB) = 1,024 TB = 2⁵⁰ bytes ≈ 1.13 quadrillion bytes. To put this in perspective: 1 petabyte could store about 200 million 5-MB photos, or about 500 billion pages of standard text. Major cloud providers (Google, AWS, Microsoft) store exabytes (1,000 PB) of data globally.
Rough estimates: a smartphone photo is 3–10 MB (higher with RAW format); a 1-minute 1080p video is 100–400 MB; a 1-minute 4K video is 400 MB to 2 GB. A 64 GB phone can hold approximately 6,000–20,000 photos or 3–10 hours of 1080p video. Cloud storage plans typically offer 15 GB–2 TB for personal use.
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