Editorial Standards
CalcPlanet's editorial mission is to create the world's most accurate, transparent, and useful free calculator platform.
Our Core Editorial Principles
Every formula is sourced from a verifiable primary source. We do not publish undocumented formulas.
We show the formula on every calculator page. Users can verify results independently.
Where multiple methods exist, we note differences and explain when each is appropriate.
Tax tables, financial thresholds, and health guidelines are updated when source data changes.
Content is written for real people — not for search engines. We explain the why, not just the how.
We never inflate counts, claim false accuracy, or make promises we can't keep.
Calculator Creation Process
- 1. Need identification via search data and user requests
- 2. Formula research from primary sources
- 3. Implementation in TypeScript with input validation
- 4. Testing against authoritative sources
- 5. Content creation (intro, formula, examples, FAQ)
- 6. SEO review
- 7. Publication after passing all checks
- 8. Monitoring for accuracy reports
Content Quality Standards
- Introductions: 80–120 words
- Formula sections: Clear notation with variables
- Examples: At least one realistic worked example
- FAQs: 4–6 questions addressing real user confusion
- Related tools: 3–6 relevant calculators
- Page length: 400–800 words of substantive content
Corrections Policy
When a formula error is confirmed, we fix it immediately, note the correction in our changelog, and thank the reporter. Corrections policy and log →
What We Don't Do
- We do not fabricate accuracy claims
- We do not publish calculators without a documented, sourced formula
- We do not place affiliate links inside calculation results (outbound reference and product links elsewhere on the site may be monetized via an affiliate network)
- We do not collect or monetize user data
- We do not recommend specific financial products