Data storage units
Convert decimal and binary storage units with explicit bit and byte distinctions.
Your inputs
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How it works
- 1 B = 8 bit; kB = 1,000 B; KiB = 1,024 B; a/b = × f₁ (bit/unit) ÷ f₂ (bit/unit)
- Worked example: 1 MiB = 1,048,576 B = 1.048576 MB; 8 Mb = 1 MB
- Supported input limits: : n ≤ 1,024
Input and formula key
Your result
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Assumptions and limitations
Lowercase b denotes bits and uppercase B bytes; one byte is eight bits. SI prefixes use powers of 1,000, IEC prefixes powers of 1,024. The exact ratio preserves the conversion even when the decimal display is rounded; usable disk space may be lower.
Sources
- NIST — conversion factor conventions Sources reviewed: 2026-10-06
- NIST — conversion factor table B.8 Sources reviewed: 2026-10-06
- NIST — decimal and binary prefixes Sources reviewed: 2026-10-06
