Legal
Privacy Policy
Effective Date: January 15, 2026 | Last Updated: July 11, 2026
Your Numbers Never Leave Your Browser
All math calculations happen client-side using JavaScript. We do not see, store, share, or log any numbers you enter into our calculators.
1. Introduction
Welcome to LCM Calculator. We provide free online math calculators for finding the LCM (Least Common Multiple), GCF (Greatest Common Factor), LCD (Least Common Denominator), and working with fractions, mixed numbers, prime factorization, and factors.
Our tools are designed to work entirely inside your web browser using JavaScript. This means your numbers are processed locally on your device and never transmitted to our servers.
By using LCM Calculator, you agree to the practices described in this policy. Questions? Contact us at support@lcmcalculator.info.
2. Information We Collect
2.1 Information You Provide Directly
- Contact Form: When you reach out through our contact page, we collect your name and email address to respond. Used only for support, never sold or shared.
2.2 Information Collected Automatically
- Browser Data: Browser type, operating system, device type, screen resolution.
- Cookies: Small text files for preferences and analytics. See Section 5.
- Analytics: Google Analytics tracks anonymous usage data.
- Server Logs: Cloudflare logs basic technical info for security.
3. Information We Do NOT Collect
- Numbers You Enter: All calculations are performed client-side. We never see the numbers you input.
- Calculation History: We do not track the calculations you perform or the results you get.
- Personal Identification: No accounts, no registration required.
- Payment Information: All tools are free.
We do not sell your data because we do not have your data.
4. How We Use Information
- To improve our math calculator tools
- To respond to contact form inquiries
- To display advertisements via Google AdSense
- To maintain security and prevent abuse
6. Third-Party Services
Google Analytics
Anonymous traffic analysis
Google AdSense
Advertisement display
Cloudflare
CDN and security
7. Advertising
Google AdSense displays ads to keep our tools free. Manage preferences at Google Ads Settings.
8. Browser Storage
We use LocalStorage to save your preferences (theme, calculator settings like preferred derivation method). This data stays on your device and is never sent to our servers. We never store your input numbers or calculation results.
9. Children's Privacy
Our tools are safe for all ages and are especially useful for students. No personal information is collected. COPPA compliant.
10. Data Security
HTTPS encryption, client-side processing, no user databases, and regular updates protect the limited data we handle.
11. Your Privacy Rights
GDPR (EU)
Right to access, rectify, erase, restrict, port, object, and withdraw consent.
CCPA (California)
Right to know, delete, and opt-out. We do not sell personal data.
12. Changes to This Policy
Updates will be posted here with a new date. Continued use means acceptance.
13. Contact Information
Website
Frequently Asked Questions
Can you see the numbers I enter?+
No. All math calculations are performed client-side in your browser using JavaScript. The numbers you enter never leave your device.
Do I need an account?+
No. All tools are free and require no registration.
Do you store my calculation history?+
No. We do not track or store the calculations you perform or the results you get.
Do you sell data?+
No. We have no user data to sell.
How do you make money?+
Google AdSense advertisements cover our costs.
What cookies do you use?+
Essential, analytics, and advertising cookies. All can be disabled.
Are the calculators secure?+
Yes. All calculations happen locally in your browser and are transmitted nowhere.
GDPR compliant?+
Yes. We comply with GDPR requirements for EU users.
2026 LCM Calculator. All rights reserved. Your privacy is protected.