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Frequently Asked Questions
Are all calculators really free?
Yes! All 73+ calculators on CalculatorHub are completely free to use with no registration required.
Can I use calculators on mobile?
Absolutely! All our calculators are fully responsive and work perfectly on smartphones and tablets.
How accurate are the calculations?
Our calculators use precise mathematical formulas and are thoroughly tested for accuracy across various scenarios.
Do you store my calculation data?
No, we don't store any of your calculation data. Your privacy is important to us.
What can we help you with?
💡 Feature Requests: Suggest new calculators or improvements
🐛 Bug Reports: Report issues or calculation errors
❓ General Questions: Ask about how to use our calculators
📊 Business Inquiries: Partnership or integration opportunities
🎓 Educational Use: Information for teachers and students
💬 Feedback: Share your experience and suggestions
Response Time
We typically respond to all inquiries within 24-48 hours during business days. For urgent technical issues, please mark your subject line with "URGENT".