Frequently Asked Questions
Common questions about our tools, privacy, and technology.
Pillar Page: Comprehensive Frequently Asked Questions
01Is Expert Toolkit really free to use forever?
Yes, it is 100% free. We believe that basic digital utility—the ability to calculate a mortgage, convert units for an assignment, or compress an image for a job application—is a fundamental right in the modern information age. We support our infrastructure costs through minimal, non-intrusive, and privacy-safe advertising. We do not charge subscriptions, we do not have 'premium' tools, and we never hide results behind a paywall. Our mission is to provide an accessible, high-precision utility suite for everyone, regardless of their financial situation.
02How do you protect my privacy with sensitive financial and health data?
Privacy is the literal foundation of our architecture. Unlike traditional web tools that send your input to a server for processing, Expert Toolkit leverages Client-Side Execution. This means that when you type in your salary, your debt, or your medical metrics, those numbers stay inside your browser's RAM. We use WebAssembly (Wasm) and highly optimized JavaScript to perform the math locally on your device. Your data never travels over the network to our servers, and we do not store, log, or sell any of the values you entered. If you close the tab, the data is gone forever.
03Why are the results here more accurate than other online calculators?
Most online tools are build using standard JavaScript arithmetic, which is notorious for floating-point rounding errors (IEEE 754). While a discrepancy of 0.000001 might seem small, it can compound over a 30-year loan into significant errors. Our platform uses a custom Precision Middleware that handles numerical transformation with 64-bit significand accuracy. Furthermore, we cross-verify every formula against industry benchmarks: our mortgage tools match banking audit standards, and our health tools follow the exact clinical methodologies of the World Health Organization (WHO) and the CDC.
04Can I use these tools if I am offline or have poor internet?
Absolutely. Because our engines run in your browser (Client-Side), once the page has fully loaded, the 'math' part of the site no longer requires an active internet connection. This is particularly useful for field researchers, travelers in remote areas, or students working in libraries with spotty Wi-Fi. You can calculate your fuel efficiency on a road trip or convert engineering units on a job site without needing a 5G signal. We are also working on a Progressive Web App (PWA) version that will allow for full offline installation on your mobile device.
05Why should I trust your Image Compressor over cloud-based alternatives?
The primary reason is Security. When you use a cloud-based converter, you are uploading your intellectual property—your photos, your designs, your private screenshots—to a third-party server. You have no way of knowing if they keep a copy or if their server is secure. Expert Toolkit's Image Studio uses the browser's native API and WebAssembly to process the image bytes entirely on your GPU and CPU. The image never leaves your computer. Additionally, because there is no upload time, the process is often much faster, especially for high-resolution files.
06Are the health results medically verified or diagnostic?
We use the same clinical formulas used by doctors and nutritionists globally (such as the Miffln-St Jeor and Harris-Benedict equations). However, it is vital to remember that tools like BMI and BMR are screening tools, not diagnostic ones. They provide an excellent mathematical baseline for understanding your body composition and energy needs, but they cannot account for individual metabolic health, muscle density, or underlying medical conditions. We always recommend taking your Expert Toolkit results to a registered dietitian or a medical professional for a comprehensive health assessment.
07Is there a limit to how many calculations I can perform daily?
There are no limits. Whether you are a real estate agent processing a hundred mortgage scenarios a day or a student converting an entire textbook's worth of units, our platform is built for heavy, professional-grade usage. Because the computations happen on your device, we don't have to worry about 'server load,' which allows us to offer unlimited usage to all users globally. We have designed the UI to be fast and responsive, ensuring that even under high volume, the interface stays fluid and lag-free.
08Do you support regional systems like the Indian Lakh/Crore system?
Yes. We take pride in being a truly global platform. Most Western-built calculators force users into the 'Millions/Billions' grouping system, which can be confusing for professionals in South Asia. Our financial engines detect your locale and automatically adjust the Comma Styling and 'grouping' logic to reflect the Lakh and Crore conventions (10,00,000 vs 1,000,000). This ensures that a business owner in Mumbai or a developer in Delhi can read their results instantly without having to manually 're-group' the digits in their head.
Last updated: January 2026. Formulas verified annually against global banking and clinical standards.