- Calculations run entirely in your browser — we do not log your inputs.
- We use minimal, anonymous analytics to count tool usage — not to track individuals.
- We do not sell or share your personal data.
- The only personal information we collect is what you voluntarily submit via the contact form.
- All traffic is encrypted via HTTPS.
Information We Collect
Information you voluntarily provide:
- Contact form: When you use our contact form, we collect your name, email address, and message. This information is used solely to respond to your inquiry.
Information collected automatically:
- Usage data: Which calculators and converters are visited, and aggregated usage counts. This data is not linked to individuals.
- Technical data: Browser type, device type, referring URL, and IP address. IP addresses are used for rate limiting only and are not stored long-term.
- Error logs: JavaScript errors are logged to help us debug and improve the service.
What we do NOT collect:
- Calculator or converter inputs. All calculation logic runs in your browser. No input values are transmitted to our servers.
How We Use Your Information
We use the limited information we collect for the following purposes:
- To provide, maintain, and improve the SwiftCalculators service.
- To respond to contact form submissions.
- To analyze aggregate tool usage and decide which tools to build or improve.
- To detect, investigate, and prevent abuse and security incidents.
We do not use your information for targeted advertising, profiling, or any automated decision-making that affects you.
Browser Storage
SwiftCalculators uses your browser's local storage for a small number of features:
- Calculation history: Stored in browser
localStorageon your device only. This data is never transmitted to our servers. - Theme preference: Your light/dark mode preference is stored in
localStorage.
We do not use tracking cookies or advertising cookies. The only cookie that may be set is __cf_bm, a security cookie placed by Cloudflare for bot protection purposes. This cookie does not track you across sites.
You can clear all locally stored data at any time through your browser's settings.
Data Retention
- Contact form messages: Retained for up to 2 years, then permanently deleted.
- Server and IP logs: Retained for up to 30 days for security and debugging purposes, then deleted.
- Browser localStorage data: Controlled entirely by you. It persists until you clear it in your browser settings. We have no access to this data.
Your Rights
You have the following rights with respect to any personal data we hold:
- Access: You may contact us to request a copy of any personal data we hold about you.
- Deletion: You may contact us to request deletion of your personal data. We will complete deletion within 30 days of a verified request.
- Opt-out: You can use SwiftCalculators in its entirety without providing any personal information — simply do not submit the contact form.
To exercise any of these rights, please get in touch via our contact page.
Children's Privacy
SwiftCalculators is a general-audience website and is not directed at children under the age of 13. We do not knowingly collect personal information from children under 13. If you believe a child under 13 has submitted personal information to us through the contact form, please contact us and we will delete it promptly.
Third-Party Services
SwiftCalculators uses the following third-party service:
- Cloudflare — Infrastructure, content delivery, and security. Cloudflare Privacy Policy
We do not use third-party analytics services, social media tracking pixels, or advertising networks. Any links from our site to external websites are governed by those websites' own privacy policies.
Security
All traffic between your browser and SwiftCalculators is encrypted using HTTPS and TLS. We take reasonable technical and organizational measures to protect the limited data we hold against unauthorized access, alteration, or disclosure.
However, no method of transmission over the internet or electronic storage is 100% secure. While we strive to use commercially acceptable means to protect your information, we cannot guarantee absolute security.
Changes to This Policy
We may update this Privacy Policy from time to time to reflect changes in our practices or applicable law. When we make changes, we will update the "Last updated" date at the top of this page.
We encourage you to review this policy periodically. Continued use of SwiftCalculators after a policy change constitutes your acceptance of the updated policy.
Contact Us
If you have questions or concerns about this Privacy Policy or our data practices, please get in touch through our contact page:
- Contact Form: swiftcalculators.net/contact
Have a Privacy Question?
We are happy to explain anything in plain language. Reach out and we will respond within a few business days.
Contact Us