About commonrule
commonrule is an independent online platform focused on building professional-grade calculators, converters, and decision tools designed to help individuals and businesses make accurate, practical, and well-informed decisions.
Our goal is simple: to provide clear, reliable, and transparent tools that users can trust for everyday work, learning, and professional use.
Unlike generic calculator websites, commonrule is built with a strong emphasis on accuracy, methodology transparency, and real-world relevance.
Why commonrule Exists
Many online tools provide quick answers, but very few explain how those answers are produced, what assumptions are used, or where errors and rounding can occur.
commonrule was created to address this gap.
- Clear calculation logic
- Proper handling of precision and rounding
- Context about when results should (and should not) be used
- Honest limitations and disclaimers
Every tool on commonrule is designed with these principles in mind.
What We Offer
- Calculators and converters for work and professional use
- Measurement and precision-based tools
- Financial, salary, and planning estimators
- Data and unit conversion utilities
- Decision-support tools with explanatory content
Each tool is accompanied by supporting explanations, examples, and methodology notes to help users understand not just the result, but the reasoning behind it.
Accuracy & Methodology Commitment
Accuracy is a core priority at commonrule.
- Verified mathematical formulas
- Internationally recognized standards where applicable
- Clearly defined constants and assumptions
- Consistent rounding and precision rules
Where applicable, tools are reviewed and updated to reflect changes in standards, assumptions, or calculation methodologies.
More details about how calculations are performed can be found on our Methodology & Accuracy page.
Transparency & Responsibility
Please note:
- Tools on this website provide informational estimates only.
- They do not replace professional, legal, financial, or technical advice.
- Users are responsible for verifying results before making critical decisions.
We actively encourage feedback and error reporting to help improve accuracy and usability over time.
Ownership & Operation
commonrule is independently owned and operated.
- Owner: Anoop Kumar
- Location: Mathura, Uttar Pradesh, India
The platform is maintained with the goal of serving a global audience, including users from Tier-1 regions, by following internationally accepted standards and best practices.
Contact & Feedback
For questions, feedback, error reports, or improvement suggestions, you can reach us at:
📧 anupchaudhary1021@gmail.com
Our Long-Term Vision
Our long-term vision for commonrule is to become a trusted reference platform for accurate calculations, conversions, and decision tools — not just for quick answers, but for understanding and confidence.
- Tool depth and precision
- Industry-specific use cases
- Educational explanations
- Transparency and documentation