Privacy Policy

Introduction

Welcome to Calculators.RUN ("we", "us", or "our"). This Privacy Policy explains how we collect, use, and protect your information when you visit calculators.run. We are committed to your privacy and handle your data with care.

If you have any questions, please contact us or email us at hello@calculators.run.

Information We Collect

When Using Calculators (No Account Required)

Most calculators on Calculators.RUN require no login or account. When you use a calculator, we do not collect or store the values you enter. All calculations happen in your browser.

We do collect the following usage data automatically:

• Analytics Data: Pages visited, time on page, referring website, browser type, and device type — used to understand how our tools are used and to improve them.
• Technical Data: IP address, operating system, and browser version for security and performance monitoring.

When You Create an Account (Optional)

If you choose to create an account, we collect:

• Personal Information: Name, email address, and a secure password hash.
• Account Activity: Your saved calculations, settings, and subscription status.

When You Contact Us

If you submit a message through our contact form, we collect your name, email address, and message content to respond to your inquiry.

How We Use Your Information

We use your information to:

• Provide, maintain, and improve our calculator tools
• Respond to your support requests and inquiries
• Send you product updates if you have subscribed to our newsletter (you may unsubscribe at any time)
• Monitor performance and detect technical issues
• Prevent fraud and ensure platform security

We do not sell your personal information to third parties.

Third-Party Services

We use the following third-party services which may process your data:

• Analytics (e.g., Vercel Analytics, Google Analytics): To understand usage patterns and improve our tools
• Stripe: For processing payments if you purchase a premium plan or credit package — Stripe Privacy Policy
• Resend: For sending transactional emails such as account verification and password reset

Each third party has its own privacy policy and data processing practices.

Data Security

We implement appropriate technical and organizational security measures to protect your information from unauthorized access, alteration, disclosure, or destruction. However, no internet transmission is 100% secure, and we cannot guarantee absolute security.

Data Retention

We retain your account data for as long as your account is active or as needed to provide our services. You may request deletion of your account and associated data at any time by contacting us at hello@calculators.run.

Usage analytics data is retained in aggregated, anonymized form.

Your Rights

Depending on your location, you may have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate data
• Request deletion of your data
• Opt out of marketing communications

To exercise any of these rights, please contact us at hello@calculators.run.

Children's Privacy

Calculators.RUN is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13.

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. When we do, we will update the "date" at the top of this page. We encourage you to review this policy periodically.

Contact Us

If you have any questions about this Privacy Policy, please contact us or email hello@calculators.run.