Accuracy & Review Process

Last Updated: 2025

At InterCalculator, accuracy isn’t just a feature; it’s the foundation of everything we build. Since our founding in 2025, we’ve committed to creating calculators that are reliable, transparent, and tested against trusted data sources.

This page explains exactly how we research, build, and review every tool before it goes live, and how we maintain accuracy over time.

Why Accuracy Matters

A calculator is only as good as the formula behind it. Even a small inaccuracy in calculation can lead to serious consequences:

• A wrong interest calculation could result in costly financial mistakes.

• An incorrect health metric could lead to misinformed lifestyle or medical decisions.

• A flawed scientific formula could produce unreliable academic results.

That’s why every InterCalculator tool is developed with an accuracy-first mindset. We don’t just code a formula; we verify it against reputable sources, test it under multiple conditions, and review it regularly to keep it up to date.

Our Accuracy Principles

We follow three key principles throughout our accuracy and review process:

1. Transparency: Every formula’s source is cited clearly on its calculator page. We believe in showing users where our data comes from so they can check it themselves.

2. Consistency: Our calculators must produce repeatable results. This means outputs should always match benchmarks from trusted references, regardless of input variations.

3. Clarity: Accuracy is useless if results are confusing. We ensure outputs are clearly displayed, with simple explanations, so even first-time users can understand them without technical knowledge.

Our Step-by-Step Review Method

Step 1 – Formula Research & Tool Building

Haris and Hammad research and select accurate formulas from trusted sources such as:

• Government agencies (e.g., NIST, NHS, IRS, CDC)

• Academic textbooks and peer-reviewed research papers

• Trusted industry websites and professional tools

or tool-related sources. Once the formula is confirmed, they build the calculator from start to finish, from creating the calculation logic to coding the tool for speed, accuracy, and usability.

Step 2 – Expert Interaction & Ongoing Review

While developing calculators, Haris and Hammad work with relevant industry experts to confirm formula accuracy, calculation logic, and tool functionality. They also review the tool during development to ensure it meets professional and user standards.

Step 3 – Personal Accuracy Testing

Haris and Hammad personally test each calculator using:

• Real-world examples and known datasets

• Comparisons with official calculators and benchmarks

• Extreme and edge-case scenarios to confirm stability

Step 4 – Final Review & Publication

Before a calculator goes live:

• Haris and Hammad complete a final review of accuracy and performance.

• The InterCalculator Editorial Team checks clarity, instructions, and presentation.

• Industry experts provide additional verification where needed.

• A References section is added so users can verify our sources.

Ongoing Maintenance & Updates

Scheduled Reviews:
Every calculator is reviewed at least once every 6–12 months.

Event-Driven Updates:
Tools are updated sooner if:

• New laws or regulations change relevant formulas (e.g., tax rates).

• Scientific standards or health guidelines are updated.

• User feedback reveals potential errors or improvements.

Version Logging:
Each calculator page displays a visible “Last Reviewed” date.

References & Source Transparency

Every calculator contains a References section with direct links to the original data or formulas we used. This allows users to verify our work and see the origin of each calculation method.

Expert Interaction for Accuracy

While Haris and Hammad handle the majority of formula research, development, and review, we also interact with subject matter experts in finance, health, science, and engineering for certain calculators. This ensures our tools align with the latest industry standards and best practices.

User Feedback on Accuracy

We value community input as part of our quality control process. Each calculator page includes a Contact link so users can report inaccuracies, suggest improvements, or ask questions. Every submission is reviewed, and valid corrections are implemented as quickly as possible.

Our Accuracy Commitment

When you use InterCalculator, you can expect:

• Tools built on official, verifiable formulas.

• Transparent sourcing for every calculation.

• Regular reviews to keep data current.

• A user-first approach — fast, clear, and trustworthy.

InterCalculator is built on trust. That’s why our Accuracy & Review Process is public — so you know exactly how we work and why you can rely on our results.