Convert Bits to Petabytes - Data Storage Converter
This converter transforms a value expressed in bits into petabytes (PB) using the SI decimal definition where 1 PB = 10^15 bytes. It is useful for large-scale capacity planning, data warehousing, and network transfer estimates.
Governance
Record 80204d1d27b9 • Reviewed by Fidamen Standards Committee
Interactive Converter
Convert between bit and petabyte with precision rounding.
Quick reference table
| Bit | Petabyte |
|---|---|
| BIT 1 b | 0 PB |
| BIT 5 b | 0 PB |
| BIT 10 b | 0 PB |
| BIT 25 b | 0 PB |
| BIT 50 b | 0 PB |
| BIT 100 b | 0 PB |
Methodology
Base identity: 1 byte = 8 bits. Decimal (SI) prefixes use powers of 10: 1 PB = 1,000,000,000,000,000 bytes.
Conversion path: bits → bytes (÷8) → petabytes (÷10^15). Combined: PB = bits ÷ (8 × 10^15).
Binary context: if you need pebibytes (PiB), use 1 PiB = 1,125,899,906,842,624 bytes (2^50). The bit-to-byte factor remains ÷8; change the divisor to 1,125,899,906,842,624 for PiB.
Key takeaways
PB = bits ÷ (8 × 10^15) under decimal SI. For binary PiB, use the 2^50 byte divisor instead.
Worked examples
8,000,000,000,000,000 bits → 1 PB.
40,000,000,000,000,000 bits → 5 PB.
8,007,379,880,000,000 bits → approximately 0.889 PB; equals about 0.888 PiB in binary terms.
F.A.Q.
Which convention does this converter use by default?
Decimal SI prefixes (1 PB = 10^15 bytes). For binary needs (PiB), use the binary divisor shown in the methodology.
Why might a storage system show a different number?
Many systems report in binary units (PiB) or mix binary units but label them with decimal symbols. The underlying byte count is the same; the difference is the divisor (10^15 vs 2^50).
How should I round large values?
Keep high precision internally; for reports, round to a reasonable number of significant figures (for example, 2–4) and clearly label the unit and convention used.
Sources & citations
- NIST — SI prefixes and unit definitions — https://physics.nist.gov/cuu/Units/prefixes.html
- NIST — Binary prefixes (IEC) reference — https://physics.nist.gov/cuu/Units/binary.html
- ISO/IEC quantities and units overview — https://www.iso.org/standard/43348.html
- IEC 80000-13:2008 — Information science and technology — https://www.iso.org/standard/31898.html
- NIST SP 811 — Guide for the Use of the International System of Units — https://www.nist.gov/pml/special-publication-811
Further resources
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
Record ID: 80204d1d27b9What changed (latest)
v1.0.0 • 2025-11-24 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Public QA status
PASS — golden 25 + edge 120
Last run: 2026-01-23 • Run: golden-edge-2026-01-23
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
What changed (latest)
v1.0.0 • 2025-11-24 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Public QA status
PASS — golden 25 + edge 120
Last run: 2026-01-23 • Run: golden-edge-2026-01-23
Engine
v1.0.0
Data
Baseline (no external datasets)
Content
v1.0.0
UI
v1.0.0
Governance
Last updated: Nov 24, 2025
Reviewed by: Fidamen Standards Committee (Review board)
Credentials: Internal QA
Risk level: low
Reviewer profile (entity)
Fidamen Standards Committee
Review board
Internal QA
Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person
Semantic versioning
- MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
- MINOR: New features or fields that do not change existing outputs for the same inputs.
- PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.
Review protocol
- Verify formulas and unit definitions against primary standards or datasets.
- Run golden-case regression suite and edge-case suite.
- Record reviewer sign-off with credentials and scope.
- Document assumptions, limitations, and jurisdiction applicability.
Assumptions & limitations
- Uses exact unit definitions from the Fidamen conversion library.
- Internal calculations use double precision; display rounding follows the unit's configured decimal places.
- Not a substitute for calibrated instruments in regulated contexts.
- Jurisdiction-specific rules may require official guidance.
Change log
v1.0.0 • 2025-11-24 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 85dc811c9499