Privacy Policy

At Calculators Central ("we", "us", or "our"), accessible via https://calculatorscentral.info, we operate on a fundamental engineering philosophy: Client-Side Execution. This Privacy Policy explains how Calculators Central handles data, protects user privacy, and complies with applicable data protection laws.

In an era where most "free" tools are data-mining operations in disguise, we have built our platform to ensure that your financial inputs, health metrics, and uploaded files never leave your device for processing. We do not see them, we do not store them, and we physically cannot sell them.

Unlike traditional web applications that send your form data to a backend server database, Calculators Central utilizes WebAssembly (Wasm) and advanced JavaScript engines to perform calculations directly within your browser's local memory (RAM).

When you calculate a mortgage payment, resize an image, or convert a PDF, the raw data is mathematically transformed on your CPU. Specifically regarding Financial and Health tools: We do not collect, store, or transmit any numbers entered into our calculators. Your financial health and medical metrics remain entirely private and reside only in your temporary browser session.

While we do not collect your input data, we do collect certain technical metadata required to maintain the security, reliability, and monetization of our free platform.

• Automated Technical Logs: Like virtually every website, our infrastructure logs standard access data including your IP address (for security banning of bots), Browser Type (to render the correct mobile/desktop CSS), and Referring URL.
• Anonymized Analytics: We use Google Analytics 4 (GA4) with IP Anonymization enabled. This tells us trends (e.g., "1,000 users visited the Mortgage page today") but avoids PII (Personally Identifiable Information).
• Voluntary Communication: If you email us directly, we receive your email address solely to reply to your inquiry. We do not add you to marketing lists.

To keep Calculators Central 100% free for students and professionals, we partner with third-party advertising networks, primarily Google AdSense. These partners may use cookies and web beacons to serve ads based on your prior visits to our website.

Third-party vendors, including Google, use cookies to serve ads based on users’ prior visits to this website or other websites.

We do not have direct control over these third-party cookies. They are used to measure the effectiveness of advertising campaigns and to personalize the advertising content that you see.

Our file-processing tools (Image Compressor, PDF Converter, etc.) are built with a strict No-Upload Policy. We use the HTML5 FileReader API to read your file into your browser's memory sandbox.

The actual modification (compression, conversion) happens via WebAssembly libraries running on your device. To clarity: Your photos and documents are NOT sent to our cloud. They remain on your computer at all times. This makes our tools safe for professional use with sensitive intellectual property.

We employ enterprise-grade security to protect the site connection:

• HTTPS / TLS 1.3 Encryption: All traffic is encrypted to prevent "Man-in-the-Middle" attacks.
• Content Security Policy (CSP): We use strict headers to block unauthorized scripts or XSS attacks.
• Data Minimization: The safest data is data we don't have. By not storing user inputs, we eliminate the largest vector of risk.

Calculators Central is a General Audience site. We strictly adhere to COPPA and do not knowingly collect Personal Identifiable Information from children under 13. If you are a parent and believe your child has provided us with data, please contact us immediately for removal.