Contact Us
We'd love to hear from you. Choose the best way to reach us.
General Inquiries
Questions about our calculators or suggestions for new features? We're here to help.
info@calcfast.onlineTechnical Support
Found a bug or experiencing issues? Let us know so we can fix it quickly.
support@calcfast.onlinePrivacy Inquiries
Questions about your data or privacy rights under GDPR/CCPA? Contact our privacy team.
privacy@calcfast.onlineBusiness & Partnerships
Interested in advertising or partnership opportunities? Let's talk.
business@calcfast.onlineFrequently Asked Questions
How accurate are your calculators?
Our calculators use standard formulas and are designed for general estimates. For important decisions (medical, financial, legal), always consult a qualified professional.
Is my data stored on your servers?
No. All calculations happen directly in your browser. We never store or transmit the data you enter into our calculators.
Can I suggest a new calculator?
Absolutely! We love hearing from users. Send your suggestions to info@calcfast.online and we'll consider adding it.
How do I report a bug?
Please email support@calcfast.online with details about the issue, including which calculator, your browser, and what happened.
Is CalcFast free to use?
Yes, completely free! We support our service through non-intrusive advertising. No registration or payment required.
What's your typical response time?
We aim to respond within 24-48 hours on business days. Privacy and support requests are prioritized.
About CalcFast
CalcFast.online is a free calculator hub dedicated to providing fast, accurate, and accessible tools for health, finance, and everyday calculations. We're committed to user privacy and accessibility, following WCAG AA standards.