Everything you need to know about QuickMath. Browse by category below. Can't find your question? Contact us and we'll get back to you within 24 hours.
Yes, 100% free. There are no premium plans, no hidden charges, no "pro" features locked behind a paywall, and no registration required. All tools are fully available to everyone. We plan to keep it this way indefinitely.
No. QuickMath does not require any sign-up, login, or account creation. Just open the page, enter your numbers, and get your answer. That simple.
Currently, QuickMath is a passion project built by a solo developer. In the future, we may introduce privacy-respecting advertisements or accept donations, but the core tools will always remain free and accessible to everyone.
Absolutely. QuickMath is fully responsive and works seamlessly on any device — desktop, tablet, or smartphone. The large input fields and buttons make it easy to use while on the go.
There is no dedicated app on the App Store or Google Play. However, you can "Add to Home Screen" from your mobile browser's share menu for an app-like experience that launches in full-screen mode.
No, absolutely not. All calculations run entirely in your browser using JavaScript. The numbers you enter never leave your device and are never transmitted to any server. We have no way of seeing, storing, or sharing them. For full details, see our Privacy Policy.
We use Plausible Analytics, a privacy-friendly, open-source analytics tool. It uses no cookies and collects no personal data. We can see anonymized, aggregated data such as page views, referrer sources, browser types, and country-level location — but we cannot identify individual visitors.
Yes. QuickMath fully complies with the General Data Protection Regulation (GDPR) for EU visitors, the California Consumer Privacy Act (CCPA) for California residents, and the Children's Online Privacy Protection Act (COPPA). We collect minimal data, use no tracking cookies, and do not sell any personal information. See our Privacy Policy for full details.
No. QuickMath does not use any tracking cookies, marketing cookies, or persistent identifiers of any kind. Our analytics provider (Plausible) also operates without cookies. Your visit is completely anonymous.
Since we collect virtually no personal data by default, there is almost nothing to delete. If you've emailed us at 15332396785@163.com, we will delete your email correspondence upon request. Please include "Data Deletion Request" in your subject line.
All calculators use standard, widely accepted mathematical formulas. The tile estimator includes a configurable waste buffer (default 5%) for cuts and breakage. The rent calculator uses the 30% affordability rule. For critical financial decisions or material purchases, always consult a qualified professional.
The adjustment field allows you to reduce one person's share by a specific dollar amount. For example, if a friend ordered a cheaper meal, enter $5 and that person pays $5 less. The $5 is then redistributed equally among the remaining people. This is a fair middle ground between equal splitting and full itemized calculation.
Our Tile & Paint Estimator uses standard 60x60cm (approximately 2x2 feet) tiles. If you're using a different tile size, simply divide your room area by your tile's area (in the same unit) to get the approximate count. The waste percentage field is fully adjustable from 0% to 30%.
"NaN" stands for "Not a Number" and typically appears when a field is left empty or contains non-numeric characters. Make sure all input fields have valid positive numbers. If the problem persists, try refreshing the page or contact us with details about which calculator and what values you entered.
Absolutely! We're always looking to expand QuickMath with new tools. Email us at 15332396785@163.com with your suggestion. If it's a common real-world math problem that people search for, we'll prioritize building it.
QuickMath works on all modern browsers including Google Chrome, Mozilla Firefox, Apple Safari, and Microsoft Edge. Internet Explorer (IE) is not supported. We recommend keeping your browser updated to the latest version for the best experience.
Once you've visited a calculator page, the JavaScript code is cached by your browser. If you revisit the same page while offline or on a slow connection, the calculations may still work. A full offline/PWA experience is on our roadmap for future development.
Not currently. Since all calculations run client-side in JavaScript, there is no backend API to expose. If there's sufficient developer interest, we may consider creating an API in the future. Email us at 15332396785@163.com to let us know you'd find that useful.
Please email us at 15332396785@163.com with a clear description of the issue, including which page it occurred on, what browser you're using, and any steps to reproduce the problem. We typically respond within 24-48 hours.
We're open to discussing embed options for relevant websites. Please contact us at 15332396785@163.com with details about your site and use case. Each inquiry will be reviewed on a case-by-case basis.
We currently do not accept sponsored content or paid guest posts on our blog. However, we welcome genuine guest contributions if the content is educational, high-quality, and relevant to our audience of everyday math users. Email us to discuss.