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Frequently Asked Questions
Are the calculators free to use?
Yes! All our calculators are completely free. No sign-up, no subscription, no hidden fees.
How accurate are the calculations?
Our calculators use standard mathematical formulas. For download time, actual results may vary due to network conditions. For PPI and aspect ratio, results are mathematically precise.
Do you store my data?
No. All calculations happen directly in your browser. We don't store any of your inputs or results.
Can I suggest a new calculator?
Absolutely! We're always looking to add useful tools. Send your suggestions to support@techcalchub.com.
Response Time
We typically respond to emails within 24-48 hours. For urgent matters, please include "URGENT" in your subject line.
While you wait, why not try our calculators?