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We typically reply within 24–48 hours on business days.

Frequently Asked Questions

Are all tools free?
Yes! Every tool on TheCalculatorOnline is 100% free. We are supported by advertising.

Do you store my data?
No. We do not store any text or numbers you enter into our tools. Your data stays in your browser.

Can I suggest a new tool?
Absolutely! Use the contact form above and select "Tool Suggestion" as the subject.

I found a bug. How do I report it?
Use the contact form, select "Bug Report", and describe the issue including the tool name and what went wrong.