Editorial Standards at UnitsConverter.io

Our Core Principles

Conversion Factor Selection

Primary Sources

We select conversion factors based on the following hierarchy of authoritative sources:

1. BIPM (SI Units) — For all metric and SI base units, BIPM is the definitive source. We use the official SI definitions and conversion factors published by BIPM.
2. NIST (US/Imperial Units) — For imperial and US customary units, NIST provides the official definitions and relationships used throughout the United States.
3. ISO Standards — For specialized categories (fuel consumption, industrial measurements), we reference the appropriate ISO standards.
4. IEC Standards — For data storage and binary units, IEC 60027 is the authoritative source.
5. Cross-Verification — All conversion factors are cross-checked against multiple independent sources to ensure consistency.

Precision Standards

• Exact Values — When a conversion factor is exact by definition (e.g., 1 inch = 2.54 cm), we display it with full precision.
• Rounded Values — When rounding is necessary, we provide multiple decimal places (typically 4-6 significant figures) to maintain accuracy for technical applications.
• Scientific Notation — For very large or very small values, we use scientific notation with clear explanation.
• Contextual Accuracy — We note when conversions are approximate or context-dependent (e.g., temperature conversions).

Content Review & Update Process

Initial Review

Every page undergoes a thorough review process before publication:

1. Verification of all conversion factors against primary sources
2. Review of unit definitions and historical information
3. Testing of all conversion formulas with known reference values
4. Checking of internal links and external references
5. Verification of mathematical accuracy in examples and conversions

Ongoing Maintenance

We commit to the following review schedule:

• Annual Review — All conversion factors are reviewed at least once per year
• Standard Updates — Within 3 months of official standard updates, our content is revised
• Error Reports — User-submitted corrections are reviewed and implemented within 2 weeks
• Content Refreshment — Outdated references and examples are updated as needed

Last Review Cycle

Content Quality Standards

Unit Detail Pages

Each unit page includes comprehensive information following this structure:

• Definition — Precise definition sourced from official standards
• Symbol — Official symbol(s) and abbreviation
• System — Measurement system (SI, Imperial, etc.)
• History — Origin and evolution of the unit
• Common Uses — Real-world applications and industries
• Conversion Table — Quick reference table to other units
• Formula — Mathematical conversion formulas
• FAQ — Answers to common questions about the unit
• References — Links to authoritative sources

Conversion Pages

Each conversion pair page provides:

• Instant real-time converter with precise results
• Conversion formula with step-by-step explanation
• Quick reference table of common values
• Real-world examples showing practical applications
• Historical context and background information
• Related conversions and cross-references

E-E-A-T Commitment

UnitsConverter.io follows Google's E-E-A-T guidelines to ensure content quality and reliability:

• Experience — Built by professionals with deep knowledge of unit systems and measurement standards
• Expertise — Content is rooted in established scientific and technical standards from BIPM, NIST, ISO, and IEC
• Authoritativeness — We cite authoritative sources and provide transparent references for all information
• Trustworthiness — We maintain high editorial standards and promptly correct any errors reported by users

Errors & Corrections

We strive for perfection but recognize that errors can occur. If you find an inaccuracy:

External Links & References

All external links point to authoritative, stable sources:

• Government standards agencies (BIPM, NIST, ISO, IEC)
• Scientific and technical documentation
• Educational institutions and research organizations
• Official unit system specifications

Contact & Questions

Have questions about our editorial standards or found an issue? We'd love to hear from you:

• General Inquiries: info@unitsconverter.io
• Corrections & Accuracy Issues: corrections@unitsconverter.io
• See our About page for more information